Operation And Use; Disassembly; Teach Switching Points (Teach Mode); Technical Data - Festo SFAH Instructions & Operating

8.13

Teach switching points (TEACH mode)

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 (RUN mode).
If the security code is activated, the parameter entry option is blocked: [Lock]
flashes.
1. Enter the security code è 8.5 Enter the security code (EDIT mode).
2. Establish the switching function in EDIT mode
è 8.6 Configuring switching output (EDIT mode).
3. Apply signal value 1.
4. Press the A pushbutton and Edit button.
Ä The current signal value will then be adopted as the first Teach point
(TP1). [t-IN] flashes.
5. Apply signal value 2.
6. Press the A pushbutton and Edit button.
Ä The current signal value will then be adopted as the first Teach point
(TP2). Switch to the RUN mode.
8.14 Zero point synchronisation (Zero Adjust)
Requirement:
– The sensor is ready for operation (RUN mode).
– The operating pressure is present, but no flow rate exists.
– [Z.AdJ] is set to [ON] (è 8.7 Change device settings (EDIT mode)).
– The measured value lies in the range 0 l/min ± 3 %FS.
• Press the A and B pushbuttons and Edit button simultaneously.
Ä – If [OK] appears: the zero point synchronisation was successful.
– If [FAIL] appears: the zero point synchronisation was not successful.
Check requirements.
If [Z.AdJ] [OFF] is set for a later time, the sensor takes over the factory setting cal-
ibration values.
9

Operation and use

After the supply voltage is switched on, the SFAH needs a warm-up time of
10 minutes until it achieves the specified accuracy.
The flow rate displayed by the SFAH refers to the standard conditions that were
set under Options in the Special menu.
9.1 Restoring factory settings (restore)
By resetting to the factory settings, the current settings are lost. If required, make
a note of these settings before resetting.
1. Switch off operating voltage.
2. Keep the A and B pushbuttons pressed down simultaneously.
3. Switch on the operating voltage.
4. Additionally, press the Edit button.
Ä [RSto PArM] appears. All parameters are reset to the factory settings.
10 Maintenance and care
1. Turn off energy source and compressed air.
2. Clean sensor with non-abrasive cleaning agents.
11 Fault clearance
Fault description Cause
No display No operating voltage or imper-
missible operating voltage
Electrical connections swapped
Device defective
Eco mode on
Indicator or switching output Short circuit or overload at the
does not react as expected output
Incorrect switching point taught
(e.g. at 0 l/min)
Incorrect standard condition set
for volumetric flow rate
Device defective
Parameter incorrect
[Er01] / [FAIL] 1) Device defective
1)
[Er02] / [ASIC] Device defective
1)
[Er03] / [SEnS] Device defective
[Er09] / [UndR] Below sensing range
[Er10] / [OVER] Sensing range exceeded
[Er17] / [SUPL] Undervoltage
2)
Remedy
Apply permissible operating
voltage.
Connect the device in accord-
ance with the circuit diagram.
Replace device
Press pushbutton or switch off
Eco mode
Eliminate short circuit/over-
load.
Repeat teaching.
Correct standard condition
Replace device
Reset to factory settings.
Replace device
Replace device
Replace device
Maintain sensing range
Maintain sensing range
Maintain permissible operating
voltage
Fault description Cause
[Er20] / [t.Hi] 2) Temperature fault
2)
[Er21] / [SHRt] Short circuit at OutA/"Puls"
[Er22] / [SHRt] 2) Short circuit at OutB
[Err] / [bUSY] OutA/"Puls" is switched active
in the device sensor
[Err] / [Id] Device ID error, devices do not
have the same design
[Err] / [COM] IO-Link® communication error
1) Display flashes red
2) Display illuminates red
Tab. 18
12

Disassembly

1. Turn off energy source and compressed air.
2. Separate connections from the sensor.
3. Loosen the mountings.
13 Disposal
ENVIRONMENT!
Send the packaging and product for environmentally sound recycling in accord-
ance with the current regulations è www.festo.com/sp.
14

Technical data

General
Approvals
CE marking (declaration of conformity
è www.festo.com/sp)
Information on materials
Tab. 19 General
Input signal/measuring element
Measured variable
Flow direction
Measuring principle
Warm-up time [min]
Method of measurement
Operating pressure [bar]
Operating pressure [kPa]
Operating medium
Temperature of medium [°C]
Ambient temperature [°C]
Nominal conditions for determination of
the accuracy specification.
Tab. 20 Input signal/measuring element
Flow rate measuring ­0.1
range [l/min]
Start value 0.002
End value 0.1
Tab. 21 Flow rate measuring range unidirectional or bidirectional
Flow rate measuring ­0.1B ­0.5B ­1B
range [l/min]
Start value –0.002
End value –0.1
Tab. 22 Flow rate measuring range bidirectional, additional
Remedy
– Check operating condi-
tions
– Check ambient temperat-
ure
– Check wiring
– Replace device
Eliminate short circuit
Eliminate short circuit
Check device settings
When replicating, use sensor
with the same type flow rate
measurement range (same
device ID)
– Check settings of the
device sensor
– Check line
RCM compliance mark
In accordance with EU EMC Directive
In accordance with EU RoHS Directive
RoHS-compliant
Volumetric flow rate, mass flow rate
Unidirectional, bidirectional
Thermal
10
Heat transfer
–0.9 ... 10
–90 ... 1000
Compressed air according to ISO 8573-1:2010 [6:4:4],
nitrogen, argon
0 ... 50
0 ... 50
– Operating pressure at output: 0 kPa relative
– Medium and ambient temperature: 23°C
– Analogue output: voltage with 20 kΩ load
– Switching output: load current in the switched
status 5 mA
– Mounting position: horizontal, display upwards
– Inflow: 7.2 Inlet situation
è
­0.5 ­1 ­5 ­10 ­50 ­100
0.01 0.02 0.1 0.2 1 2
0.5 1 5 10 50 100
­5B ­10B ­50B ­100B ­200B
–0.01 –0.02 –0.1 –0.2 –1 –2
–0.5 –1 –5 –10 –50 –100
­200
4
200
–4
–200