Festo SFAH-10B-Q6S-PNLK-PNVBA-M8 Käyttöohje
Festo
Ei luokiteltu
SFAH-10B-Q6S-PNLK-PNVBA-M8
Lue alta 📖 käyttöohje suomeksi merkille Festo SFAH-10B-Q6S-PNLK-PNVBA-M8 (71 sivua) kategoriassa Ei luokiteltu. Tämä opas oli hyödyllinen 18 henkilölle ja sai 5.0 tähden keskimäärin 9.5 käyttäjältä
Sivu 1/71
SFAH
Flow sensor
Operating instruc-
tion
8185054
8185054
2023-08c
[8185056]
Translation of the original instructions
IO-Link is a registered trademark of its respective trademark holder in certain countries.
Festo — SFAH — 2023-08c
3
Table of contents
1 Applicable documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Training of qualified personnel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 UL/CSA certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1.1 Product design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1.2 Display components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.1 Functional principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.2 Operating statuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.3 Switching outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.4 Standard switching condition for volume values - ‘REF’/‘Cond’. . . . . . . . . . . . 13
4.2.5 Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.6 Analogue output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.7 Minimum value and maximum value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.8 Replicate parameter function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.9 Offset adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1 Mounting the sensor on the H-rail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Mounting the sensor with wall mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Mounting sensor on plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.4 Mounting sensor on plate at the side. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.5 Mounting sensor with front panel mounting kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 Pneumatic installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1.1 Infeed situation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.1 Switching on the sensor in RUN mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.2 Displaying parameters in SHOW mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.3 Configuring the sensor in EDIT mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.3.1 Entering security code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.3.2 Configuring the switching output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.3.3 Changing device settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3.4 Setting the volume pulse output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3.5 Setting the analogue output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4
Festo — SFAH — 2023-08c
7.3.6 Replicating parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.3.7 Performing offset adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.4 Teaching switching points in TEACH mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 IO-Link interface description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.1 General information, IO-Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.2 Identification parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.3 IO-Link default parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.4 IO-Link system commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.5 Smart sensor profile parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.6 Device-specific parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.7 IO-Link teach-in. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.8 Block parameterisation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.9 Process data IN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.10 Conversion factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.10.1 Conversion factors for process data variable, process data variable min,
process data variable max, and setpoint values SP1, SP2 . . . . . . . . . . . . . . . . 39
8.10.2 Conversion factors for hysteresis, switching point d.SP and max. signal delta
(S.obS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.10.3 Conversion factors for volume units and mass units. . . . . . . . . . . . . . . . . . . . . 41
8.10.4 Scaling factors for gases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.11 IO-Link diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.1 Switching on the Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.2 Restoring factory settings (Restore). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10 Malfunctions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.1 Fault clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.2 Error messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
11 Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
12 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
12.1 Technical data, general. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
12.2 Technical data for UL/CSA certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
12.3 Examples for calculating the maximum error of the display. . . . . . . . . . . . . . . . . . . . . . . 51
Festo — SFAH — 2023-08c
Safety
5
1 Applicable documents
All available documents for the product
èwww.festo.com/sp.
Document Content
IO-Link IODD Device description file
Tab. 1: Applicable documents
2 Safety
2.1 Safety instructions
–Only use the product in its original condition without unauthorised modifications.
–Only use the product if it is in perfect technical condition.
–Observe labelling on the product.
–Only use media in accordance with the specifications Technical data.è
–The product may generate high frequency interference, which may require interference suppression
measures in residential areas.
2.2 Intended use
The flow sensor monitors the flow rate of gaseous media in pipe systems or terminals in industrial
applications.
2.3 Training of qualified personnel
Work on the product may only be carried out by qualified personnel who can evaluate the work and
detect dangers. The qualified personnel have skills and experience in dealing with electropneumatic
(open-loop) control technology.
2.4 UL/CSA certification
In combination with the UL inspection mark on the product, the information in this section must also
be observed in order to comply with the certification conditions of Underwriters Laboratories Inc. (UL)
for USA and Canada.
UL/CSA certification information
Product category code QUYX, QUYX7
File number E322346
Considered standards UL 61010-1
CAN/CSA C22.2 No. 61010-1
UL mark
Tab. 2: UL/CSA certification information
6
Festo — SFAH — 2023-08c
Product overview
The Front panel mounting kit SAMH-FH-F can be used only for mounting SFAH behind a plate. Cabinet
mounting was not evaluated by UL.
WARNING
The unit shall be supplied by a power source which fulfils the requirements on a limited-energy
circuit in accordance to IEC/EN/UL/CSA 61010-1 or on a Limited Power Source (LPS) in accordance to
IEC/EN/UL/CSA 60950-1 or IEC/EN/UL/CSA 62368-1 or a Class 2 circuit in accordance to NEC or CEC.
3 Additional information
–Contact the regional Festo contact if you have technical problems
èwww.festo.com.
–Accessories and spare parts èwww.festo.com/catalogue.
4 Product overview
4.1 Structure
4.1.1 Product design
4
5
6
3
1
2
1
Fig. 1: Product design
1
Pneumatic port; identification on the
product
2
Plug for electrical connection
3
Display
4
[A] key
5
[Edit] key
6
[B] key
Festo — SFAH — 2023-08c
Product overview
7
4.1.2 Display components
2
1
3
3
4
Fig. 2: LCD display
1
Status information
2
Main display, e. g. measured value
3
Output display
3
Output display
4
Sub-display, e.g. unit
Symbols on the display
Example for LCD display Description
Output display
‘OutA’ Switching output OutA selected/activated, flashes with active IO-
Link
‘OutA’ Switching output OutA set
‘OutB’ Switching output OutB selected/activated
‘OutB’ Switching output OutB set
‘Pulse’ Analogue output for volume pulse and mass pulse selected
‘Anlg’ Analogue output for flow rate selected/activated
Status information
‘Lock’ Security code activated
‘Spec’ Special menu selected
‘Option’ Parameters that influence the measured value display have been
changed from the factory setting: reference condition (standard) or
gas
Tab. 3: Output display and status information
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Festo — SFAH — 2023-08c
Product overview
Example for LCD display Description
Main display Sub-display
Measured value indicator and unit in RUN mode
‘–0.53’ ‘L.Min’ Measured value indicator and unit
Menu items for the OutA and OutB switching outputs
‘Edit’ ‘bin’ EDIT menu for the switching outputs
‘_|¯’ ‘Fctn’ Threshold value comparator
‘_|¯|_’ ‘Fctn’ Window comparator
‘d_|¯|_’ ‘Fctn’ Auto difference monitor
‘18.0’ ‘SP’ Switching point value
‘1.80’ ‘SP.Lo’ Value of lower switching point
‘6.45’ ‘SP.Hi’ Value of upper switching point
‘0.50’ ‘HY’ Hysteresis value
‘18’ ‘t.obS’/‘MSEC’1) Time interval for determination of the signal change,
which is used to establish the reference value.
‘0.25’ ‘d.SP’ Threshold value for determination of the monitoring
range
‘N/O’ ‘LOGC’ Switching characteristics of the switching outputs:
‘NO’ = N/O contact, ‘NC’ = N/C contact
‘bLUE’ ‘COLR’ Display colour
Extreme values, SHOW mode only
‘1.64’ ‘MIN’ Minimum measured value since switching on the
supply voltage or since the last reset
‘8.50’ ‘MAX’ Maximum measured value since switching on the
supply voltage or since the last reset
‘20.8’ ‘AVER’ Average of the flow rate measurement, filter time con-
stants
Additional settings
‘100’ ‘PULS’ Duration of the volume pulse or mass pulse at the
output
Analogue output
‘Edit’ ‘ANLG’ EDIT menu for the analogue output
‘0...10’ ‘Out’/‘V’1) Output function of the analogue output
Festo — SFAH — 2023-08c
Product overview
9
Example for LCD display Description
Main display Sub-display
‘100’ ‘In.Hi’/‘%’1) Scaling of the analogue output to the end value of the
flow measuring range in percent of FS
‘–100’ ‘In.Lo’/‘%’1) Scaling of the analogue output to the start value of the
flow measuring range in percent of FS
Menu for Spec device settings
‘Edit’ ‘Menu’ EDIT menu for additional settings
‘16’ ‘Filt’/‘MSEC’1) Value of the filter time constant for the measurement
signal
‘L.Min’ ‘FLOW’/‘Unit’ Display unit for flow rate measurement
‘0°C’ ‘REF’/‘Cond’1) Reference standard for gas volume
‘Air’ ‘GAS’ Selection of the operating medium
‘1->2’ ‘FLOW’/‘Path’1) Selection of the flow direction from port 1 to port 2 or
vice versa, only with bidirectional calibrated product
variant
‘ON’ ‘Z.Adj’ Offset adjustment for display, switching output and
analogue output
‘Unit’ ‘Sub.d’ Settings of the sub-display in RUN mode: selected unit
or switching point of OutA or bar graph or gas or flow
direction
‘40’ ‘Eco’/‘SEC’1) Economy mode: Time period after which the display
backlight is switched off
‘PNP’ ‘bin’/‘Out’1) Switchover of the switching outputs between PNP and
NPN
‘Flow’ ‘bin’/‘Pin4’
1) Shift of binary switching output or pulse output. Pin4
with M8 variant, pin2 with L1 variant
‘bin’ ‘FLOW’/‘Pin2’1) Switching binary switching output or analogue output
at pin2 with M8 variant, pin3 with L1 variant
‘OFF’ ‘Code’ Activation and specification of the security code
‘OFF’ ‘MASt’ Activation of the IO-Link master function for replication
of parameters
1) flashing alternately
Tab. 4: Example for LCD display
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Festo — SFAH — 2023-08c
Product overview
4.2 Function
4.2.1 Functional principle
The sensor measures the flow rate (standard volume flow rate, mass flow rate) by a thermal process.
The flow rates are measured by a micromechanical sensor element with a downstream electronic
evaluation unit. The sensor is connected to higher-level systems via switching outputs, a volume
switching pulse, an analogue output or an IO-Link interface. Depending on their configuration, the
switching outputs monitor a threshold value, an analogue input or a signal change. The outputs can
be set as PNP or NPN and normally open (NO) or normally closed (NC). Process values can be read out
and parameters can be changed and transmitted to additional devices through the IO-Link interface.
A volume signal/mass signal can be calculated and output via a pulse output along with a cumulative
measured value via IO-Link by integration of the flow rate.
Fig. 3: SFAH signal structure
4.2.2 Operating statuses
Operating status Function
RUN mode –Basic status after the operating voltage is applied
–Display of the current measured value.
–Display of the selected inputs and outputs.
–Switching between the flow rate and volume/mass measured variables.
SHOW mode –Display of the current settings of the switching outputs and analogue output.
–Display and reset of minimum and maximum values.
–Display of the average flow rate measurement.
EDIT mode –Setting parameters.
TEACH mode –Acceptance of the current measured value to specify switching points.
Tab. 5: SFAH operating statuses
Festo — SFAH — 2023-08c
Product overview
11
4.2.3 Switching outputs
4.2.3.1 Switching functions
Threshold value comparator
Function Normally open contact (N/O) Normally closed contact (N/C)
Switching function:
–1 switching point (SP)
TEACH mode:
–2 teach points (TP1, TP2)
–SP = ½ (TP1 + TP2)
Tab. 6: Threshold value comparator
Window comparator
Function Normally open contact (N/O) Normally closed contact (N/C)
Switching function:
–2 switching points (SP.Lo,
SP.Hi)
TEACH mode:1)
–2 teach points (TP1, TP2)
–TP1 = SP.Lo, TP2 = SP.Hi
1) SP.Lo = lower value, SP.Hi = higher value, independent of the teach sequence
Tab. 7: Window comparator
Auto difference monitoring d_|¯|_
Auto difference monitoring can be used to monitor the consistency of a signal value. If the applied
signal is consistent within the range between ‘SP.Lo’ and ‘SP.Hi’, the reference value qRef is set
automatically. Consistent means that over the ‘t.obS’ period the maximum signal change ‘S.obS’ is
less than0.2%FS. This results in a switching operation at the output and signals the start of the
signal monitoring. The signal is stable if it remains in the ‘d.SP’ monitoring range around qRef. If it
leaves the monitoring range the output switches back.
12
Festo — SFAH — 2023-08c
Product overview
1 2 3
Fig. 4: Auto difference monitor
1
Reference value qRef is determined
2
Measured value deviates ‘d.SP’ from the ref-
erence value
3
Monitoring range
The ‘SP.Lo’, ‘SP.Hi’, ‘t.obS’ and ‘d.SP’ parameters can be freely configured. The higher ‘t.obS’ is set the
greater the required signal stability in order to define the reference value qRef. The limit value for a
maximum signal change ‘S.obS’ can only be adjusted via IO-Link.
Function Normally open contact (N/O) Normally closed contact (N/C)
Switching function:
–2 switching points (SP.Lo,
SP.Hi) for setting the valid
working range
–1 switching point (d.SP) for
determining the monitoring
range
TEACH mode:1)
–2 teach points (TP1, TP2)
–TP1 = SP.Lo, TP2 = SP.Hi
1) SP.Lo = lower signal value, SP.Hi = higher signal value, independent of the teach sequence
Tab. 8: Window comparator: auto difference monitoring
4.2.3.2 Colour change of the display
A red colour change can be set in the display for the switching outputs OutA and OutB depending
on the switching status. The colour change enables the system status to be identified from a greater
distance. Depending on the setting the colour change reacts both to OutA and to OutB.
Festo — SFAH — 2023-08c
Product overview
13
Parameter Meaning
‘bLUE’ The display is always blue; the colour change function is disabled.
‘R.On’ The display is red if the switching output is set (high = 1).
The display is blue if the switching output is not set (low = 0).
‘R.OFF’ The display is red if the switching output is not set (low = 0).
The display is blue if the switching output is set (high = 1).
Tab. 9: Colour change of the display
4.2.3.3 Volume pulse/mass pulse
A threshold value SP can be set for the volume and/or the mass with the cumulative volume measure-
ment/mass measurement. If the configured threshold value is reached, the sensor sends a switching
pulse at the pulse output (èFig. 3) for an adjustable time. The volume measurement/mass measure-
ment is restarted at every switching pulse.
Normally open contact setting (N/O) Normally closed contact setting (N/C)
Tab. 10: Volume pulse/mass pulse with cumulative volume measurement/mass measurement
4.2.4 Standard switching condition for volume values - ‘REF’/‘Cond’
The represented flow rate units can be related to different standard conditions. It is possible to switch
between the following standard conditions. The corresponding standard is defined by selection of the
reference temperature in the menu guiding on the display.
‘REF’/‘Cond’ Off 15°C 20°C
Standard DIN 1343 ISO 2533 ISO6358
Air pressure (absolute) [bar] 1.01325 1.01325 1
[kPa] 101.325 101.325 100
Temperature [°C] 0 15 20
Humidity [%] 0 0 65
14
Festo — SFAH — 2023-08c
Product overview
‘REF’/‘Cond’ Off 15°C 20°C
Status information (option) Light off Light on Light on
Correction factor, measurement range
end value
1 1.055 1.087
Tab. 11: Standard condition for volume values
The sensor is factory calibrated to the physical standard conditions in accordance with DIN1343.
If a different standard from DIN1343 is selected, this changes the specified measurement range
(±100%FS) by the defined correction factor. This change is shown on the display by ‘Option’.
Only the display on the sensor monitor is adjusted when the reference standard is switched. If neces-
sary, the effect on the nominal measurement range of the specific sensor must also be considered
when evaluating the analogue output.
4.2.5 Filter
The low-pass filter ‘Filt’ smoothes the flow rate input signal. It also changes the rise time and the fall
time. Filtering affects all outputs. The filter time corresponds to the time constant T of a low-pass filter.
In the SHOW mode a smoothed average ‘AVER’ of the flow rate measurement can be displayed.
Fig. 5: Example: scaling of the analogue signal at the current output
1) The display filter is only active while ‘AVER’ is selected in SHOW mode.
4.2.6 Analogue output
Analogue signal
The analogue output can be configured either as voltage output 0…10V or 1…5V or as current
output 4…20mA. The voltage output is factory-set to 0…10V.
Scaling of the analogue signal
With the bidirectional sensor variants, the analogue output signal is 0…10V, 1…5V or 4…20mA
the complete sensing range (–100…100%FS) and with the unidirectional sensor variants the
analogue output signal is assigned to the positive sensing range (0…100%FS). If only a part of the
sensing range is to be used, the analogue value output can be scaled to this partial sensing range with
the ‘In.Lo’ and ‘In.Hi’ parameters.
Festo — SFAH — 2023-08c
Product overview
15
1 2
Fig. 6: Scaling the analogue signal at the current output
1
Starting point of the scaled sensing range
(In.Lo)
2
End point of the scaled sensing range (In.Hi)
4.2.7 Minimum value and maximum value
The minimum values and the maximum values for the flow rate measurement are displayed and reset
in the SHOW mode.
Switching off the operating voltage resets the minimum and maximum values.
4.2.8 Replicate parameter function
This function enables all settings that have been carried out on one sensor (master) to be transferred
to other identical sensors (device).
Parameters are transferred with the IO-Link functions. The configured sensor is set to a master mode
and can then send its parameters to an identical device sensor (identical device ID).
4.2.9 Offset adjustment
An offset adjustment can be made for the zero point. The offset adjustment influences the display and
all outputs. The offset adjustment is only available with the zero adjust setting = ‘ON ’. As a result, the
zero range hiding is no longer active. The zero adjust function ‘Z.Adj’ to ‘ON’ is the default setting for
bidirectional sensor types. If ‘Z.Adj’ is set to ‘ON’, the offset error visible on the display can be set to
zero by a zero adjust teach process. This requires the measured value in the ± 3% FS range based on
the original factory comparison for the teach process.
If the ‘Z.Adj’ parameter is reset to ‘OFF’, the stored adjustment value is no longer taken into account
and the device takes the calibration values from the factory setting. The saved value is not lost and is
used again if the ‘Z.Adj’ parameter is set to ‘ON’.
16
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Assembly
5 Assembly
NOTICE
An unfavourable mounting position may impair the function of the product.
• When selecting the mounting position, make sure that condensate from the compressed air lines
cannot accumulate in the sensor.
Any mounting position is possible but can have an influence on measurement precision (
è12.1
Technical data, general).
5.1 Mounting the sensor on the H-rail
1
2
Fig. 7: H-rail mounting
1. Mount the H-rail on the sensor.
–Tightening torque: maximum 0.5Nm
2. Attach the H-rail mounting to the H-rail.
3. Press the H-rail mounting in the direction of the arrow until the fastening lock clicks into position.
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Assembly
17
5.2 Mounting the sensor with wall mounting
Fig. 8: Wall mounting
1. Screw the wall mounting to the sensor.
–Tightening torque: maximum 0.5Nm
2. Install the wall mounting.
5.3 Mounting sensor on plate
Fig. 9: Mounting on plate
• Fasten the sensor to the plate with screw of the appropriate length.
–Tightening torque: maximum 0.5Nm
–Hole diameter: maximum 3.3mm
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Assembly
5.4 Mounting sensor on plate at the side
Fig. 10: Plate mounting on the side
1. Mount the H-rail on the sensor.
–Tightening torque: maximum 0.5Nm
2. Mount the H-rail mounting on the plate with washers and M4 screws.
–Tightening torque: maximum 0.5Nm
5.5 Mounting sensor with front panel mounting kit
1
2
3
4 5 6
Fig. 11: Front panel mounting kit
1
Panel frame
2
Sensor
3
H-rail mounting
4
Hexagon head screw
5
Clamping element
6
Knurled nut
1. Mount the H-rail on the sensor.
–Tightening torque: maximum 0.5Nm
2. Mount a hexagon head screw on the H-hat rail mounting.
3. Push the panel frame through the cut-out.
–Cutout: 62mm x 24mm ± 0.1mm
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Installation
19
4. Attach the sensor to the panel frame so all 4 snap-in hooks lock into place.
5. Push the clamping element over the hexagon head screw.
6. Lock the sensor with the enclosed knurled nut.
–Tightening torque: maximum 0.3Nm
6 Installation
6.1 Pneumatic installation
With the unidirectional sensor SFAH-...U-... the flow rate is fed to the flow port1 and exits at flow
port2. The direction of flow is indicated on the sensor by an arrow.
Unidirectional type only: if the sensor tubing is incorrectly installed, the measured values will be
shown with a negative sign and will be outside the specified measurement range.
With the bidirectional sensor SFAH-...B-... the flow rate can be fed to flow port1 or flow port2. The
flow direction can be set in EDIT mode and shown in the sub-display to display the flow direction on
the monitor with the correct sign.
Installing tubing on sensor
•Install the tubing at flow port1 and flow port2 Marking on product.è
6.1.1 Infeed situation
The specific accuracies in accordance with the technical data will be reached if the conditions for the
laminar flow inlet at the sensor are maintained.
Min. internal
diameter of the
laminar flow
inlet in mm
Design of the laminar flow inlet Flow measuring range in l/min
-0.1 -0.5 -1 -5 -10 -50 -100 -200
2.9 Any recommended ±2%1) Not recom-
mended2)
4 Straight recommended ±1%1)
4 Angle directly on sensor
4 Distance of the angle in flow
direction in front of the sensor:
5…80cm
±10%1)
6 Any recommended
1) Deviation from the specified accuracy.
2) Operation possible. But deviations greater than20% must be expected.
Tab. 12: Effect of the infeed conditions and port sizes on the specified accuracy
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Installation
6.2 Electrical installation
WARNING
Risk of injury due to electric shock.
• Use exclusively PELV circuits in accordance with IEC60204-1/EN60204-1 for the electrical power
supply (Protective Extra-Low Voltage, PELV).
• Observe the general requirements of IEC60204-1/EN60204-1 for PELV circuits.
• Use exclusively voltage sources that guarantee reliable electrical isolation from mains power in
accordance with IEC60204-1/EN60204-1.
1. Observe the length of the signal line è12Technical data.
2. Configure the binary outputs in accordance with their wiring in the SPEC menu è7.3.2 Config-
uring the switching output.
Plug L1 Pin Wire colour1) Allocation
1 Brown (BN) Operating voltage +24VDC
2 Black (BK) Switching output OutA, volume pulse/mass pulse
or IO-Link (C/Q cable)
3 White (WH) Switching output OutB or analogue output
4 Blue (BU) 0V
1) Colours are applicable for connecting cables NEBS-L1...
Tab. 13: Pin allocation of plug L1
Circuit diagram SFAH-…-L1
Fig. 12: Circuit diagram
Plug M8 x 1 Pin Wire colour1) Allocation
1 Brown (BN) Operating voltage +24VDC
2 White (WH) Switching output OutB or analogue output
3 Blue (BU) 0V
4 Black (BK) Switching output OutA, volume pulse/mass pulse
or IO-Link (C/Q cable)
1) Colours are applicable for connecting cables NEBU-M8...
Tab. 14: Pin allocation of plug M8 x 1
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Commissioning
21
Circuit diagram SFAH-…-M8
Fig. 13: Circuit diagram
7 Commissioning
7.1 Switching on the sensor in RUN mode
• Switch on the operating voltage.
ÄThe current measured value is displayed.
The sensor is in the basic status in RUN mode. The basic status can be reached as follows from other
modes:
–Press and hold the [Edit] key for 3seconds.
–After expiration of a monitoring period (timeout).
Switchover of measured value indicator
The measured value display can be switched between flow rate measurement and volume measure-
ment/mass measurement in RUN mode.
–Switching to flow measurement: press the [A] key.
–Switching to volume measurement/mass measurement: press the [B] key.
7.2 Displaying parameters in SHOW mode
Requirement: the sensor is ready for operation and is in RUN mode.
Switching output OutA or volume pulse/mass pulse at the output
1. Press the [A] key twice in quick succession.
ÄThe first set parameter is displayed. ‘Fctn’ at OutA or ‘SP’ at pulse flashes.
2. Press the [A] key to display each of the following parameters
èFig. 14.
Switching output OutB or analogue output Anlg
1. Press the [B] key twice in quick succession.
ÄThe first set parameter is displayed. ‘Fctn’ at OutB or ‘Out’ at Anlg flashes.
2. Press the [B] key to display the following parameters èFig. 14.
22
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Commissioning
Measured value indicator (RUN mode)
Measured value indicator (RUN mode)
see
or
or
Double click button [A] or button [B]
Button [A] or Button [B]
Button [Edit
or
Fig. 14: Menu structure in SHOW mode
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Commissioning
23
7.3 Configuring the sensor in EDIT mode
Measured value indicator (RUN m
Measured value indicator (RUN m
Button [A] or Button [B]
Button [Edit
Default
see
Technical Data
Fig. 15: EDIT mode menu structure
Changes to the switching behaviour are effective immediately.
7.3.1 Entering security code
If ‘Lock’ ‘IOL’ is shown on the display, the sensor is locked by IO-Link Device Access Lock and can only
be configured via IO-Link.
24
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Commissioning
Requirement: the sensor is ready for operation and is in RUN mode.
1. Press the [Edit] key.
ÄThe EDIT mode is active. ‘OutA’ flashes.
ÄIf the security code is activated, the parameter entry option is blocked: ‘Lock’ flashes.
2. If the security code is activated, enter the security code with the [A] or the [B] key and press the
[Edit] key.
3. Press the [Edit] key.
Ä‘OutA’ flashes and the parameter input is unlocked.
7.3.2 Configuring the switching output
The sequence for configuring the OutA and OutB switching outputs is identical. In the following, the
process is described using the OutA switching output.
Requirement: the sensor is ready for operation and is in RUN mode.
1. Press the [Edit] key.
Ä‘Edit’ is displayed. ‘OutA’ flashes.
2. Press the [Edit] key.
Ä‘Fctn’ flashes.
3. Select the ‘_I¯’, ‘_I¯I_’ or ‘d_I¯I_’ switching function with the [A] or [B] key.
4. Press the [Edit] key.
ÄThe set value is saved.
ÄThe next adjustable parameter is shown.
5. Set the parameter with the [A] or [B] key.
6. Repeat steps 4 and 5 until all parameters are set.
7. Press the [Edit] key.
ÄThe RUN mode is active.
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Commissioning
25
7.3.3 Changing device settings
Requirement: the sensor is ready for operation and is in RUN mode.
1. Press the [Edit] key.
Ä‘Edit’ is displayed. ‘OutA’ flashes.
2. Select the ‘Spec’ with the [A] or [B] key.
Ä‘Spec’ flashes.
3. Press the [Edit] key.
Ä‘Filt’ and ‘MSEC’ flash alternately.
4. Set the parameter with the [A] or [B] key.
5. Press the [Edit] key.
ÄThe set value is saved.
ÄThe next adjustable parameter is shown.
6. Repeat steps 4 and 5 until all parameters are set.
7. Press the [Edit] key.
ÄThe RUN mode is active.
7.3.4 Setting the volume pulse output
Requirement: the sensor is ready for operation and is in RUN mode.
1. Press the [Edit] key.
Ä‘Edit’ is displayed. ‘OutA’ flashes.
2. Select ‘Puls’ with the [A] or [B] key.
3. Press the [Edit] key.
Ä‘SP’ and the set volume unit flash alternately.
4. Set the parameter with the [A] or [B] key.
5. Press the [Edit] key.
ÄThe set value is saved.
ÄThe next adjustable parameter is shown.
6. Repeat steps 4 and 5 until all parameters are set.
7. Press the [Edit] key.
ÄThe RUN mode is active.
7.3.5 Setting the analogue output
Requirement: the sensor is ready for operation and is in RUN mode.
1. Press the [Edit] key.
Ä‘Edit’ is displayed. ‘OutA’ flashes.
2. Select ‘Anlg’ with the [A] or [B] key.
3. Press the [Edit] key.
Ä‘Out’ and ‘V’ flash alternately.
4. Set the parameter with the [A] or [B] key.
5. Press the [Edit] key.
ÄThe set value is saved.
ÄThe next adjustable parameter is shown.
26
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Commissioning
6. Repeat steps 4 and 5 until all parameters are set.
7. Press the [Edit] key.
ÄRUN mode is active.
7.3.6 Replicating parameters
Requirements:
–The previously configured sensor (master sensor) is ready for operation and is in RUN mode.
–The switching output on the device sensor is configured to PNP and is in an unswitched status; the
‘OutA’ indicator is off.
–The master sensor and device sensor have the same design with reference to the parameters,
i.e.they have the same device ID.
–The master sensor is connected to the device sensor and the power supply.
–Parameterisation of the device sensor must not be blocked via IO-Link.
Master
Sensor
Power Suppply
Device
Sensor
Fig. 16: Replicate pin allocation parameters
1. Select the ‘Spec’ special menu on the master sensor with the device settings.
2. Press the [Edit] key repeatedly until ‘MASt’ is displayed.
3. Select ‘ON’ with the [A] or [B] key.
4. Press the [Edit] key.
Ä‘REPL’ and ‘REdY’ are displayed alternately.
5. Press the [A] or [B] key.
Ä‘REPL’ and ‘RUN’ are briefly displayed alternately. The parameters are transmitted to the
device sensor. ‘REPL’ and ‘REdY’ are displayed alternately.
ÄIn the event of an error, an error message is displayed
è10.1 Fault clearance,
è10.2 Error
messages.
6. Repeat point 5 if an additional sensor is to be parameterised.
7. Press the [Edit] key.
ÄThe RUN mode is active.
7.3.7 Performing offset adjustment
Requirements:
–Operating pressure is present and there is no flow rate.
–The sensor is ready for operation and is in RUN mode.
–‘Z.AdJ’ ‘ON’ is set è7.3.3 Changing device settings.
–The measured value lies in the range 0 l/min ± 3 %FS.
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IO-Link interface description
27
• Press the [A] key, the [B] key and the [Edit] key simultaneously.
Ä‘OK’ is displayed: the offset adjustment was successful.
Ä‘FAIL’ is displayed: the offset adjustment was not successful. Check requirements.
If ‘Z.AdJ’ ‘OFF’ is set for a later time, the sensor uses the factory-set calibration values.
7.4 Teaching switching points in TEACH mode
If ‘Lock’ ‘IOL’ is shown on the display, the sensor is locked by IO-Link Device Access Lock and can only
be configured via IO-Link.
The Teach process is the same for configuring the switching outputs for OutA and OutB. In the
following, the process is described using the switching output OutA. The Teach function is only
available for flow monitoring.
Requirement: the sensor is ready for operation and is in RUN mode.
1. Enter the security code è7.3.1 Entering security code.
2. Define the switching function in EDIT mode è7.3.2 Configuring the switching output.
3. Apply signal value 1.
4. Press the [A] key and the [Edit] key.
ÄThe current signal value will then be adopted as the first teach point (TP1).
Ä‘t-IN’ flashes.
5. Apply signal value 2.
6. Press the [A] key and the [Edit] key.
ÄThe current signal value will then be adopted as the second teach point (TP2).
ÄThe RUN mode is active.
There is no timeout in the TEACH mode. The sensor only switches to RUN mode when the entire teach
process has ended.
8 IO-Link interface description
8.1 General information, IO-Link
Characteristics Specification
Protocol version DeviceV1.1
Profile Smart Sensor Profile
Function classes Binary data channel (BDC)
Process data variable (PDV)
Identification
Diagnostics
Teach channel
28
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IO-Link interface description
Characteristics Specification
Communication mode COM2 (38.4kbaud)
SIO-Mode support Yes
Port class A
Process data length IN 3bytes
Process data content IN 2 bit BDC (flow monitoring)
1 bit BDC (volume monitoring)
14 bit PDV (measured flow rate value)
Service data IN 32bit volume measurement/mass measurement
Min. cycle time 4ms
Data storage required 0.5KB<
Vendor ID 0x014D (333)
Device ID èTab. 16 Device ID values
Tab. 15: General IO-Link specification
Device ID [dec] Device ID [hex] Order code
80 0x000050 SFAH-01U
81 0x000051 SFAH-05U
82 0x000052 SFAH-1U
83 0x000053 SFAH-5U
84 0x000054 SFAH-10U
85 0x000055 SFAH-50U
86 0x000056 SFAH-100U
87 0x000057 SFAH-200U
88 0x000058 SFAH-01B
89 0x000059 SFAH-05B
90 0x00005A SFAH-1B
91 0x00005B SFAH-5B
92 0x00005C SFAH-10B
93 0x00005D SFAH-50B
94 0x00005E SFAH-100B
95 0x00005F SFAH-200B
Tab. 16: Device ID values
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IO-Link interface description
29
8.2 Identification parameters
Index Sub
index
Access1) Name Sample value String
length
0x0010 0 R Vendor Name Festo Max. 32
0x0011 0 Vendor Text http://www.festo.com 20
0x0012 0 Product Name SFAH-10B-G18FS-PNLK-
PNVBA-M8
Max. 64
0x0013 0 Product ID 8035300 SFAH-01B-M8 Max. 64
0x0014 0 Product Text Flow sensor for gas media Max. 32
0x0015 0 Serial Number 3S7PL9V6HHM 11
0x0016 0 Hardware Revision REV01 5
0x0017 0 Firmware Revision V51.2.13 8
0x0018 0 R/W Application Specific Tag *** 32
0x2101 0 R Part Number 1234567 7
1) R = read, R/W = read and write
Tab. 17: Identification parameters
8.3 IO-Link default parameters
Index Sub
index
Access1) Name Value Format
0x0002 0 W System Command è8.4 IO-Link system com-
mands
UIn-
terger8
0x000C 0 R/W Device Access Locks
èTab. 19 Device Access
Locks
0 = unblocked
1 = blocked
Record
0x0020 0 R Error Count 0 UIn-
terger16
0x0024 0 Device Status 0 UIn-
terger8
0x0025 0 Detailed Device Status è8.11 IO-Link diagnostics Array of
3 byte
records
0x0028 0 Process Data Input è8.9 Process data IN Record
1) R = read, W = write, R/W = read and write
Tab. 18: IO-Link default parameters
30
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IO-Link interface description
Bit no. Description
0 Lock write access to parameters
1 Lock data save, no effect
2 Lock entire parameterisation in EDIT mode and TEACH mode
3 Lock UI, not used
Tab. 19: Device Access Locks
8.4 IO-Link system commands
Value
[dec]
Value
[hex]
Command Description
65 0x41 SP1 Single Value Teach Determines Teachpoint for Setpoint SP1
66 0x42 SP2 Single Value Teach Determines Teachpoint for Setpoint SP2
67 0x43 SP1 Two Value Teach TP1 Determines teach-in point 1 for
switching point SP1
68 0x44 SP1 Two Value Teach TP2 Determines teach-in point 2 for
switching point SP1
75 0x4B Specific Teach Device-specific teach-in
79 0x4F Teach Cancel Cancels the Teach sequence
128 0x80 Device reset Device warm start
130 0x82 Restore factory settings Sets the factory settings operative again
160 0xA0 Reset Min PDV Minimal measured flow value reset
161 0xA1 Reset Max PDV Maximal measured flow value reset
168 0xA8 Adjust flow zero point User defined flow zero point adjustment
176 0xB0 Reset volume recording/mass recording Reset volume recording/mass recording
in RECORDER mode.
177 0xB1 Start/resume volume recording/mass
recording
Start or resume volume/mass logging in
RECORDER mode.
178 0xB2 Pause volume recording/mass recording Pause volume recording/mass recording
in RECORDER mode.
Tab. 20: IO-Link system commands
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IO-Link interface description
31
8.5 Smart sensor profile parameters
Index Sub
index
Access1) Name Value Format
0x000D 0 R Profile Characteristics – Array of
UIn-
teger16
1 Device Profile ID 0x0001: Smart Sensor Profile UIn-
teger16
2 Function Class ID 0x8000: Identifikation
3 Function Class ID 0x8001: Binarer Datenkanal
(BDC)
4 Function Class ID 0x8002: Prozessdatenvariable
(PDV)
5 Function Class ID 0x8003: Diagnose
6 Function Class ID 0x8004: Teach Channel
0x000E 0 PD Input Descriptor – Array of
Octet-
String3
1 BDC1, BDC2, BDC3 0x01, 0x03, 0x00 Octet-
String3
2 Process data variable 0x02, 0x0E, 0x08
0x003A 0 R/W Teach Channel 0: BDC1 (OutA), factory set-
ting
1: BDC1 (OutA)
2: BDC2 (OutB)
UIn-
teger8
0x003B 0 R Teach State 0 Record
1 teach flagTP2 for SP2 0: not set
1: set
Boo-
leanT
2 teach flag TP1 for SP2 0: not set
1: set
3 teach flag TP2 for SP1 0: not set
1: set
4 teach flag TP1 for SP1 0: not set
1: set
5 Teach State 0 UIn-
teger4
32
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IO-Link interface description
Index Sub
index
Access1) Name Value Format
BDC1, flow rate monitoring OutA
0x003C 1 R/W Setpoint SP1 1…16382 UIn-
teger16
2 Setpoint SP2 1…16382
0x003D 1 Switchpoint logic 0: NO
1: NC
UIn-
teger8
2 Switchpoint mode 1: Single point mode
2: Window mode
128: auto difference moni-
toring
3 Setpoint Hysteresis 0…7373 UIn-
teger16
BDC2, flow rate monitoring OutB
0x003E 1 R/W Setpoint SP1 1…16382 UIn-
teger16
2 Setpoint SP2 1…16382
0x003F 1 Switchpoint logic 0: NO
1: NC
UIn-
teger8
2 Switchpoint mode 1: Single point mode
2: Window mode
128: auto difference moni-
toring
3 Setpoint Hysteresis 0…7373 UIn-
teger16
BDC3, volume pulse/mass pulse (Puls)
0x4000 1 R/W Setpoint 164…4294967295 UIn-
teger32
2 no used 0
0x4001 1 Switchpoint logic 0: NO
1: NC
UIn-
teger8
2 Switchpoint mode 128: volume pulse/mass
pulse
3 no used 0 UIn-
teger16
1) R = read, R/W = read and write
Tab. 21: Smart sensor profile parameters
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IO-Link interface description
33
8.6 Device-specific parameters
Index Sub-
Index
Access1) Name Value Format
0x0112 0 R/W OutA, auto difference moni-
toring, max. signal change
(S.obS)
16…328,
Factory setting: 33
UInteger16
0x0113 0 OutA, auto difference moni-
toring, period (t.obS)
5…9999
0x0114 0 OutA, auto difference mon-
itoring, monitoring range
(d.SP)
41…4096
0x0118 0 OutA, backlight color (COLR) 0: always blue
1: red, if Out = 0
2: red, if Out = 1
0x0130 0 OutB, auto difference moni-
toring, max. signal change
(S.obS)
16…328,
Factory setting: 33
0x0131 0 OutB, auto difference moni-
toring, period (t.obS)
5…9999
0x0132 0 OutA, auto difference mon-
itoring, monitoring range
(d.SP)
41…4096
0x0136 0 OutB, backlight color (COLR) 0: always blue
1: red, if Out = 0
2: red, if Out = 1
0x0149 0 Volume pulse/mass pulse
width (PULS/MSEC)
20…995ms
0x016A 0 Analog output scaling, start
value (In.Lo)
–100…80 Integer16
0x016B 0 Analog output scaling, end
value (In.Hi)
–80…100
0x016C 0 Analog output type (Out) 0: 0…10V voltage output
1: 1…5V voltage output
2: 4…20mA current
output
UInteger16
34
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IO-Link interface description
Index Sub-
Index
Access1) Name Value Format
0x017F 0 R/W flow unit of the display
(FLOW/Unit)
0: l/min
1: l/h
2: scfm
3: scfh
4: g/min
UInteger16
0x0181 0 Flow display filter 8: 256ms
9: 512ms
10: 1024ms
0x0182 0 Filter measured flow rate
value PDV (AVER)
0: filter off
1: 2ms
2: 4ms
3: 8ms
4: 16ms
5: 32ms
6: 64ms
7: 128ms
8: 256ms
9: 512ms
10: 1024ms
11: 2048ms
0x0184 0 User zero adjustment on/off
(Z.Adj)
0: off
1: on
0x01DD 0 Measured value display 1: flow rate
2: volume pulse/mass
pulse
0x01E2 0 Output signal at pin Y 2) 0: OutB (bin)
1: analogue output for the
flow rate signal (Anlg)
0x01E3 0 Output signal at pin X 3) 0: OutA (FLOW)
1: volume pulse/mass
pulse (VOL/MASS)
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IO-Link interface description
35
Index Sub-
Index
Access1) Name Value Format
0x01E8 0 R/W Backlight duration
(Eco/SEC)
0: always on
1: 5s
2: 10s
3: 20s
4: 40s
5: 80s
6: 160s
7: 320s
8: 640s
UInteger16
0x01E9 0 Sub-display mode (Sub.d) 0: units
1: bar graph
2: gas
3: flow direction )
4: SP1
5: SP2
6: d.SP
0x01EA 0 Lock code, local parameter
lock
0: off
1…9999 - code
0x01EE 0 Gas type (GAS) 0: air
1: N2
3: Ar
0x01F0 0 Reference condition for
volume values (REF/Cond)
0: 0°C
1: 15°C
2: 20°C
0x2001 0 R PDV, measured flow rate
process value
0…214 – 1
0x2002 0 PDV, process value of volume
measurement/mass measure-
ment for pulse output
0…232 – 1 UInteger32
0x2004 0 PDV, process value of volume
measurement/mass measure-
ment in RECORDER mode
0…232 – 1
0x2005 0 Min. PDV, minimum measured
flow rate value
0…214 – 1 UInteger16
0x2006 0 Max. PDV, maximum meas-
ured flow rate value
0…214 – 1
36
Festo — SFAH — 2023-08c
IO-Link interface description
Index Sub-
Index
Access1) Name Value Format
0x200E 0 R Runtime of volume measure-
ment since last reset/power
on
0…232 – 1s UInteger32
0x200F 0 Runtime of volume measure-
ment in error status of flow
rate measurement since last
reset/power on
0…232 – 1s
1) R = read, R/W = read and write
2) Pin 2 for SFAH-...-M8; Pin 3 for SFAH-...-L1
3) Pin 4 for SFAH-...-M8; Pin 2 for SFAH-...-L1
Tab. 22: Device-specific parameters
8.7 IO-Link teach-in
The sensor support three different IO-Link teach-in functions for all IO-Link switching channels (BDC):
–Device-specific teach-in
–Single Value teach-in according to IO-Link specification in window mode and in auto difference
monitoring
–Two Value teach-in according to IO-Link specification in single-point mode
Carry out the following steps before teach-in:
1. Configure the switching channel according to the application including switching point mode,
switching logic and hysteresis.
2. Set the teach-in channel to the desired switching channel (parameter 0x003A, OutA=0x01,
OutB=0x02).
The following applies to all teach-in processes:
–The [A], [B] and [Edit] keys are locked during teach-in. ‘t-IN’ and ‘IOL’ flash alternately on the display.
–The chronological sequence of the teach-in points is not relevant.
–The teach values are only accepted after the second teach-in.
–The teach-in process can be cancelled with the 0x4F command.
Device-specific teach-in
The device-specific teach-in (0x4B) behaves in the same way as the manual teach-in on the device.
The two teach-in points are set with the IO-Link command instead of a manual key press. For teach-in
of the single-point mode the switching point is derived from the average of the two teach-in points: SP
= 1/2 (TP1 + TP2).
1. Set the first flow rate.
2. Send the teach-in command 0x4B.
3. Set the second flow rate.
4. Send the teach-in command 0x4B.
Single Value Teach-In according to IO-Link specification in window mode
SP1 and SP2 are taught-in with separate commands with the Single Value teach-in. The two teach
points are assigned to the switching points SP1 and SP2 in such a way that the parameter set is valid.
Festo — SFAH — 2023-08c
IO-Link interface description
37
1. Set the desired flow rate.
2. Send the teach-in command 0x41 for TP1.
3. Set the second desired flow rate.
4. Send the teach-in command 0x42 for TP2.
Two Value teach-in according to IO-Link specification in single-point mode
With the Two Value teach-in, each teach point is taught in with separate commands for SP1.
1. Set the desired flow rate.
2. Send the teach-in command 0x43 (SP1 Two Value Teach TP1).
3. Set the second desired flow rate.
4. Send the teach-in command 0x44 (SP1 Two Value Teach TP2). The switching point is derived from
the average of the two teach points: SP1 = 1/2 (TP1 + TP2).
Recommendation: after teach-in read out and check that the setting conform to the application. For
more information see IO-Link Smart Sensor Profile è8.5 Smart sensor profile parameters.
8.8 Block parameterisation
This function can prevent sending of invalid parameters to a device. Individually sent parameter
values may not be compatible with the parameter values already stored in the device. All parameters
transmitted as a block will be simultaneously accepted and activated.
Block parametrisation for BDC1 (OutA)
Index Sub
index
Name
0x003C 1 Setpoint SP1
2 Setpoint SP2
0x003D 2 Switchpoint mode (Fctn)
3 Hysteresis (HY)
0x0112 0 Auto difference monitoring, max. signal change (S.obS)
0x0113 0 Auto difference monitoring, period (t.obS)
0x0114 0 Auto difference monitoring, signal change (d.SP)
Tab. 23: Block of coherent OutA parameters
Block parametrisation for BDC2 (OutB)
Index Sub
index
Name
0x003E 1 Setpoint SP1
2 Setpoint SP2
0x003F 2 Switchpoint mode (Fctn)
3 Hysteresis (HY)
38
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IO-Link interface description
Index Sub
index
Name
0x0130 0 Auto difference monitoring, max. signal change (S.obS)
0x0131 0 Auto difference monitoring, period (t.obS)
0x0132 0 Auto difference monitoring, signal change (d.SP)
Tab. 24: Block of coherent OutB parameters
Block parametrisation for BDC3 (Puls)
Index Sub
index
Name
0x4000 1 Setpoint SP1
0x0149 0 Volume pulse/mass pulse width
Tab. 25: Block of coherent pulse parameters
Block parametrisation for the analogue output
Index Sub
index
Name
0x016A 0 Analog output scaling, start value (In.Lo)
0x016B 0 Analog output scaling, end value (In.Hi)
Tab. 26: Block of coherent parameters for the analogue output
8.9 Process data IN
Bit 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8
Meaning no used MSB LSB
Process data PDV flow rate
Data content 14 bit PDV measured value
Index 0x0028
SubIndex 1
Data type UInteger14
Tab. 27: Process data IN PDV
Bit 7 6 5 4 3 2 1 0
Process data no used BDC3 BDC2 BDC1
Data content Puls OutB OutA
Index 0x0028
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IO-Link interface description
39
Bit 7 6 5 4 3 2 1 0
SubIndex no used 2 3 4
Data type Boolean
Tab. 28: Process data IN BDC
8.10 Conversion factors
Fixed conversion factors are required for the physical units in order to display the measured and
process value-related parameters correctly in the control unit. The conversion factors for the volume
units are based on the reference standard DIN1343 and the gas medium air.
• For other reference standards and gas media, use factors from the following chapters:
–è4.2.4 Standard switching condition for volume values - ‘REF’/‘Cond’
–è8.10.4 Scaling factors for gases
8.10.1 Conversion factors for process data variable, process data variable min, process data
variable max, and setpoint values SP1, SP2
Flow rate
unit
SFAH-0.1 SFAH-0.5
Gradient Offset Gradient Offset
l/min 0.000012207776 –0.1 0.000061038882 –0.5
l/h 0.000732466581 –6 0.003662332906 –30
scft/min 0.000000431114 –0.00353147 0.000002155570 –0.01765735
scft/h 0.000025866838 –0.2118882 0.000129334188 –1.059441
g/min 0.000015783434 –0.12929 0.00007891717 –0.64645
Tab. 29: Conversion factors
Flow rate
unit
SFAH-1 SFAH-5
Gradient Offset Gradient Offset
l/min 0.000122077764 –1.0 0.000610388818 –5.0
l/h 0.007324665812 –60 0.036623329061 –300
scft/min 0.000004311140 –0.03531470 0.000021555698 –0.1765735
scft/h 0.000258668376 –2.118882 0.001293341879 –10.59441
g/min 0.00015783434 –1.2929 0.000789171702 –6.4645
Tab. 30: Conversion factors
40
Festo — SFAH — 2023-08c
IO-Link interface description
Flow rate
unit
SFAH-10 SFAH-50
Gradient Offset Gradient Offset
l/min 0.001220777635 –10 0.006103888177 –50
l/h 0.073246658121 –600 0.366233290606 –3000
scft/min 0.000043111396 –0.35314700 0.000215556980 –1.76573500
scft/h 0.002586683758 –21.18882 0.012933418788 –105.9441
g/min 0.001578343405 –12.929 0.007891717024 –64.645
Tab. 31: Conversion factors
Flow rate
unit
SFAH-100 SFAH-200
Gradient Offset Gradient Offset
l/min 0.012207776354 –100 0.024415552707 –200
l/h 0.732466581212 –6000 1.464933162424 –12000
scft/min 0.000431113960 –3.53147000 0.000862227919 –7.06294000
scft/h 0.025866837576 –211.8882 0.051733675151 –423.7764
g/min 0.015783434047 –129.29 0.031566868095 –258.58
Tab. 32: Conversion factors
8.10.2 Conversion factors for hysteresis, switching point d.SP and max. signal delta (S.obS)
Flow rate unit SFAH-0.1 SFAH-0.5 SFAH-1
Gradient O1) Gradient O1) Gradient O1)
l/min 0.000012207776 0 0.000061038882 0 0.000122077764 0
l/h 0.000732466581 0 0.003662332906 0 0.007324665812 0
scft/min 0.000000431114 0 0.000002155570 0 0.000004311140 0
scft/h 0.000025866838 0 0.000129334188 0 0.000258668376 0
g/min 0.000015783434 0 0.00007891717 0 0.00015783434 0
1) Offset
Tab. 33: Conversion factors
Flow rate unit SFAH-5 SFAH-10 SFAH-50
Gradient O1) Gradient O1) Gradient O1)
l/min 0.000610388818 0 0.001220777635 0 0.006103888177 0
l/h 0.036623329061 0 0.073246658121 0 0.366233290606 0
scft/min 0.000021555698 0 0.000043111396 0 0.000215556980 0
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IO-Link interface description
41
Flow rate unit SFAH-5 SFAH-10 SFAH-50
Gradient O1) Gradient O1) Gradient O1)
scft/h 0.001293341879 0 0.002586683758 0 0.012933418788 0
g/min 0.000789171702 0 0.001578343405 0 0.007891717024 0
1) Offset
Tab. 34: Conversion factors
Flow rate unit SFAH-100 SFAH-200
Gradient Offset Gradient Offset
l/min 0.012207776354 0 0.024415552707 0
l/h 0.732466581212 0 1.464933162424 0
scft/min 0.000431113960 0 0.000862227919 0
scft/h 0.025866837576 0 0.051733675151 0
g/min 0.015783434047 0 0.031566868095 0
Tab. 35: Conversion factors
8.10.3 Conversion factors for volume units and mass units
Variant Volume units and mass units
l scft g
SFAH-0.1 G1) 0.000006103888 0.000000215557 0.000007891717
O2) 000
SFAH-0.5 G 0.000030519441 0.000001077785 0.000039458585
O 0 0 0
SFAH-1 G 0.000061038882 0.000002155570 0.000078917170
O 0 0 0
SFAH-5 G 0.000305194409 0.000010777849 0.000394585851
O 0 0 0
SFAH-10 G 0.000610388818 0.000021555698 0.000789171702
O 0 0 0
SFAH-50 G 0.003051944088 0.00010777849 0.003945858512
O 0 0 0
SFAH-100 G 0.006103888177 0.00021555698 0.007891717024
O 0 0 0
42
Festo — SFAH — 2023-08c
IO-Link interface description
Variant Volume units and mass units
l scft g
SFAH-200 G 0.012207776354 0.00043111396 0.015783434047
O 0 0 0
1) G = gradient
2) O = offset
Tab. 36: Conversion factors for volume units and mass units
8.10.4 Scaling factors for gases
Gas Factor
Compressed air 1
Nitrogen (N2) 0.987
Argon 1
Tab. 37: Scaling factors for gases
8.11 IO-Link diagnostics
Event
code
Event type Device status Local display Possible cause
0x1802 Error Failure ‘Er02’
‘ASIC’
IO-Link- driver error
0x1803 Error Failure ‘Er03’
‘SEnS’
–Sensor unit failure
–Device faulty
0x1809 Warning Out-of-Specifica-
tion
Measured value
‘Er09’/‘UNdR’
Range of flow sensing undershot
0x180A Warning Out-of-Specifica-
tion
Measured value
‘Er10’/‘OVER’
Range of flow sensing undershot
0x1815 Error Out-of-Specifica-
tion
Measured value
‘Er21’/‘SHRt’
Overload or short circuit at
switching output OutA/pulse
0x1816 Error Out-of-Specifica-
tion
Measured value
‘Er22’/‘SHRt’
Overload or short circuit at
switching output OutB
0x181F Notification Device is operating
properly
no effect Volume recording/mass recording
overflow
0x4000 Error Failure Measured value
‘Er20’/‘tEMP’
Temperature error in IO-Link driver
Festo — SFAH — 2023-08c
Malfunctions
43
Event
code
Event type Device status Local display Possible cause
0x5000 Error Failure ‘Er01’
‘FAIL’
Device hardware fault
0x5111 Warning Out-of-Specifica-
tion
Measured value
‘Er17’/‘SUPL’
Power supply too low
Tab. 38: IO-Link diagnostics
9 Operation
9.1 Switching on the Sensor
After switching on the supply voltage, the sensor requires a warm-up time of 10minutes before it
reaches the specified accuracy. The flow rate displayed by the sensor refers to the standard conditions
that have been set in the SPEC menu under Options.
9.2 Restoring factory settings (Restore)
The current settings of the sensor will be lost if factory settings are restored.
1. Switch off the operating voltage.
2. Press and hold the [A] and [B] keys.
3. Switch on the operating voltage.
4. Also press the [Edit] key.
Ä‘RSto PArM’ is displayed.
ÄAll parameters are reset to the factory settings.
10 Malfunctions
10.1 Fault clearance
Troubleshooting communication interface è8.11 IO-Link diagnostics
Malfunction Cause Remedy
No display No operating voltage or imper-
missible operating voltage.
Apply permissible operating
voltage.
Electrical connections swapped. Connect the device in accord-
ance with the circuit diagram.
Device faulty. Replace device.
Economy mode set. Press key or switch off economy
mode.
44
Festo — SFAH — 2023-08c
Malfunctions
Malfunction Cause Remedy
Indicator or switching output
does not react as expected
Short circuit or overload at the
output.
Eliminate short circuit or over-
load.
Incorrect switching point taught,
e.g.at 0l/min.
Repeat teach-in.
Incorrect standard condition for
volumetric flow rate set.
Correct standard condition.
Device faulty. Replace device.
Parameter incorrect. Reset to factory settings.
Tab. 39: Fault clearance
10.2 Error messages
Fault description Cause Remedy
‘Er01’/‘FAIL’1) Device faulty Replace device.
‘Er02’/‘ASIC’1)
‘Er03’/‘SEnS’1)
‘Er09’/‘UndR’ Below sensing range Maintain sensing range.
‘Er10’/‘OVER’ Sensing range exceeded Maintain sensing range.
‘Er17’/‘SUPL’2) Undervoltage Maintain permissible operating
voltage.
‘Er20’/‘t.Hi’2) Temperature fault Check operating conditions.
Check ambient temperature.
Check wiring.
Replace device.
‘Er21’/‘SHRt’2) Short circuit at OutA/“Puls” Eliminate short circuit.
‘Er22’/‘SHRt’2) Short circuit at OutB Eliminate short circuit.
‘Err’/‘bUSY’ OutA/“Puls” is switched active
in the device sensor
Check device settings.
‘Err’/‘Id’ Device ID error, devices do not
have the same design
Use sensors with the same flow
rate measurement range (same
device ID) for replicating.
Festo — SFAH — 2023-08c
Technical data
45
Fault description Cause Remedy
‘Err’/‘COM’ IO-Link communication error Check settings of the device
sensor.
Check line.
1) Display flashes red
2) Display is red
Tab. 40: Error messages
11 Removal
1. Turn off energy source and compressed air.
2. Disconnect connections from the sensor.
3. Loosen the mountings.
12 Technical data
12.1 Technical data, general
General
Certification RCM compliance mark, c UL us Listed (OL)
Certificates, declaration of conformity èwww.festo.com/sp
Note on materials RoHS-compliant
Tab. 41: General
Input signal and measuring element
Measured variable –Volumetric flow rate
–Mass flow rate
Flow direction –Unidirectional
–Bidirectional
Measurement principle Thermal
Measurement method Heat transfer
Warm-up time [min] 10
Operating pressure [MPa] –0.09…1
[bar] –0.9…10
[psi] –13…145
Temperature of medium [°C] 0…50
Ambient temperature [°C] 0…50
46
Festo — SFAH — 2023-08c
Technical data
Input signal and measuring element
Operating medium –Compressed air to ISO 8573-1:2010 [6:4:4]
–Nitrogen
–Argon
Nominal conditions for determination
of the accuracy specification.
–Operating pressure at output: 0kPa relative
–Medium and ambient temperature:23°C
–Analogue output: voltage with 20kΩ load
–Switching output: load current in the switched status
5mA
–Mounting position: horizontal, display upwards
–Inflow: è6.1.1 Infeed situation
Tab. 42: Input signal and measuring element
Output, general
Accuracy of zero point com-
pressed air, nitrogen
[% FS] ±1
Accuracy of zero point argon [% FS] ±2
Repetition accuracy of zero
point
[% FS] ±0.2
Repetition accuracy of spread [% FS] ±0.8
Temperature coefficient zero
point
[% FS/K] Typ. 0 (max. 0.05)
Temperature coefficient of
spread
[% FS/K] Typ. 0.15 (max. 0.3)
Position dependency of zero
point with vertical mounting
[% FS/
100kPa]
±0.5
Accuracy of spread
–Without using the com-
pressed air, nitrogen flow
outlet
[% FS] ±2
–Without using the argon
flow outlet
[% FS] ±4
–With use of the com-
pressed air, nitrogen cur-
rent outlet
[% FS] ±3.5
–With use of the argon flow
outlet
[% FS] ±7
Festo — SFAH — 2023-08c
Technical data
47
Output, general
Pressure influence of spread
–In the pressure range
–70…+1000kPa
[% FS] Typ. ±1
–In the pressure range
–90…–70kPa
[% FS] Typ. ±4
Tab. 43: Output, general
Switching output
Switching output 2 PNP or 2 NPN, switchable
Switching function Threshold value comparator, window comparator, auto dif-
ference monitoring
Switching element function N/C contact or N/O contact, switchable
Max. output current [mA] 100
Voltage drop [V] Max. 1
Max. switch-on time [ms] 6 (at Filt = OFF)
Max. switch-off time [ms] 5 (at Filt = OFF)
Pull down resistor [ms] PNP: integrated
Pull-up resistor [ms] NPN: not integrated
Load current of at least 2mA required
Inductive protective circuit Present
Tab. 44: Switching output
Analogue output Variant SFAH-...U- SFAH-...B
Characteristic flow rate curve [l/min] -0.1...- 0…0.1 –0.1…0.1
-0.5...- 0…0.5 –0.5…0.5
-1...- 0…1 –1…1
-5...- 0…5 –5…5
-10...- 0…10 –10…10
-50...- 0…50 –50…50
-100...- 0…100 –100…100
-200...- 0…200 –200…200
Voltage output characteristic
curve
[V] All 0…10 or 1…5
48
Festo — SFAH — 2023-08c
Technical data
Analogue output Variant SFAH-...U- SFAH-...B
Current output characteristic
curve
[mA] All 4…20
Max. load resistance of cur-
rent output
[Ω] All 500
Min. load resistance of
voltage output
[kΩ] All 20
Rise time [ms] All Max. 3 (with Filt = Off )
Tab. 45: Analogue output
Output, additional data
Short circuit current rating Yes
Overload protection Present
Tab. 46: Output, additional data
Electronics
Operating voltage range [VDC] 22…26
Max. no-load supply current [mA] 25
Reverse polarity protection For all electrical connections
Tab. 47: Electronics
Electromechanics SFAH-...-M8 SFAH-...-L1
Connection type Plug
Connection technology M8x1 A-cod., according to EN
61076-2-104
Plug pattern L1J
Number of pins/wires 4
Max. connecting cable length [m] 30
20 with IO-Link operation
Tab. 48: Electromechanics
Mechanics
Mounting position Any
Pneumatic connection èTab. 12 Effect of the infeed conditions and port sizes on
the specified accuracy
Product weight [g] Approx. 90
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Technical data
49
Mechanics
Note on materials for
housing
PA-reinforced
Materials in contact with
medium
–NBR
–PA-reinforced
–High-alloy stainless steel
–Anodised wrought aluminium alloy
–Silicon
–Silicon nitride
–Epoxy
Tab. 49: Mechanics
Display, operation
Displayable units for the variants
–SFAH-0.1
–SFAH-0.5
–SFAH-1
l/min, l/h, scft/h, g/min, l, scft, g
Displayable units for the variants
–SFAH-5
–SFAH-10
l/min, l/h, scft/min, scft/h, g/min, l, scft, g
Displayable units for the variants
–SFAH-50
–SFAH-100
–SFAH-200
l/min, scft/min, scft/h, g/min, l, scft, g
Setting range of volume threshold
values for the variant
–SFAH-0.1
–0.001…9.999l
–0.001…9.999sft3
–0.001…9.999g
Setting range of volume threshold
values for the variants
–SFAH-0.5
–SFAH-1
–0.01…99.99l
–0.001…9.999sft3
–0.01…99.99g
Setting range of volume threshold
values for the variant
–SFAH-5
–0.1…999.9l
–0.001…9.999sft3
–0.1…999.9g
Setting range of volume threshold
values for the variant
–SFAH-10
–0.1…999.9l
–0.01…99.99sft3
–0.1…999.9g
50
Festo — SFAH — 2023-08c
Technical data
Display, operation
Setting range of volume threshold
values for the variant
–SFAH-50
–1…9999l
–0.01…99.99sft3
–1…9999g
Setting range of volume threshold
values for the variants
–SFAH-100
–SFAH-200
–1…9999l
–0.1…999.9sft3
–1…9999g
Zero range hiding [%FS] < 1.5 (Z.Adj = OFF)
Tab. 50: Display, operation
Flow rate measuring range [l/
min]
-0.1 -0.5 -1 -5 -10 -50 -100 -200
Start value 0.002 0.01 0.02 0.1 0.2 1 2 4
End value 0.1 0.5 1 5 10 50 100 200
Tab. 51: Flow rate measuring range unidirectional or bidirectional
Flow rate measuring range [l/
min]
-0.1B -0.5B -1B -5B -10B -50B -100B -200B
Start value –0.002 –0.01 –0.02 –0.1 –0.2 –1 –2 –4
End value –0.1 –0.5 –1 –5 –10 –50 –100 –200
Tab. 52: Flow rate measuring range bidirectional, supplementary
Immission and emission -0.1 -0.5 -1 -5 -10 -50 -100 -200
Storage temperature [°C] –20…80
Degree of protection IP40
Pressure drop at
600kPa at input and q
max.
[kPa] < 0.5 1.2 1.5 1.6
Pressure drop at 0kPa
at output and q max.
[kPa] < 0.5 7.5 10 30
Standard nominal flow
rate (600 -> 500kPa)
[l/min] 57 93 121 361 445 458 490 870
Tab. 53: Immission and emission
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Technical data
51
12.2 Technical data for UL/CSA certification
Electrical data and ambient conditions for UL/CSA
Rated supply voltage 24VDC
Input current max. 0.23A
Operating pressure max. 1.0MPa
Pollution degree 3
Humidity range 0…93%
NEMA enclosure type number
(Enclosure Type Rating)
UL Type 1
Installation site for indoor use only
Max. installation height 2000m
Degree of protection The degree of protection IP40 is not UL-tested.
Tab. 54: Electrical data and ambient conditions for UL/CSA
12.3 Examples for calculating the maximum error of the display
–Flow measuring range: 1 …50l/min (FS = 50)
–Measured value: 35l/min
Range error (2% FS) Zero point error (1% FS)
x= measured variable, y= measured value (display), z= maximum error of the display
Tab. 55: Spread error and zero point error
Spread error and zero point error
The spread error is proportional to the measured value. At the measured value of 35l/min the spread
error is 35/50 of 2% of 50 l/min = 0.7 l/min.
The zero point error is independent of the measured value. It is 1% of 50 l/min (FS) = 0.5 l/min.
Errors in the display under nominal conditions (0bar relativ, 23°C):
The display error under nominal conditions is the result of adding the spread and zero point errors.
52
Festo — SFAH — 2023-08c
Technical data
The actual flow rate is therefore in the range 35 ± (0.7 + 0.5) l/min = 35 ± 1.2 l/min.
Errors in the display under deviating nominal conditions (e.g. 6bar relative, 40°C, vertical
mounting position and display at front):
Typical temperature errors and pressure errors are spread errors. The temperature error at 40°C and
measured value 35l/min is 35/50 of 0.15% of 50 l/min * ( 40 °C – 23 °C ) = ± 0.89 l/min.
The pressure error at 6bar relative and measured value 35l/min is
35/50 of 1% of 50 l/min = ± 0.35 l/min.
The error due to position dependence is a zero point error. This error, with vertical mounting position
and the front-facing display, is 35 l/min = 0.5% of 50 l/min * 6 = ± 1.5 l/min for the measured value.
The error of the display under deviating nominal conditions is derived from addition of the error values
spread, zero point, temperature, pressure and mounting position.
The actual flow rate is in the range 35 ± (0.7 + 0.5 + 0.89 + 0.35 + 1.5) l/min = 35 ± 3.94 l/min.
Tuotetiedot
| Merkki: | Festo |
| Kategoria: | Ei luokiteltu |
| Malli: | SFAH-10B-Q6S-PNLK-PNVBA-M8 |
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