Siemens SIMATIC Operating Instructions Manual page 134

Fail-Safe Electronic Modules
8.3 F -Switch PROFIsafe Digital Electronic Module
Causes of Faults and Corrective Actions
The following table lists the possible causes of faults and corrective measures for the
individual diagnostic messages of the F-Switch PROFIsafe electronic module.
Table 8-30
Diagnostic
Message
Short circuit
Overtemperat
ure
Fault
Parameter
assignment
error
Sensor
voltage or
load voltage is
missing
134
Causes of Faults and Corrective Measures for Diagnostic Messages of the F-Switch
PROFIsafe Electronic Module
Fault Possible Causes
Detection
Always Short circuit in the actuator
Cross-circuit in the actuator
Internal fault
For output Overload: output stage is
signal "1" overloaded and becomes
only too hot.
Cyclically Short circuit at the sensor
during short-
Cross circuit at the sensor
circuit test
Always Shutdown due to violation
of temperature limit values
in the module case.
Always Internal module fault has
occurred
Always Inserted module does not
match configuration;
incorrect parameter
assignment
PROFIsafe address set
incorrectly on the F-module
Always No supply voltage or
supply voltage is too low
Voltage dip due to short
circuit
Corrective Actions
Eliminate short circuit/cross circuit on
actuator
Once the fault has been eliminated, the
module must be removed and inserted,
or the power switched off and on
Replace module
Eliminate overload.
Eliminate short circuit/cross circuit on
sensor
Check load wiring. Check ambient
temperature. Check whether
permissible output current (aggregate
current) is exceeded for the ambient
temperature.
Once the fault has been eliminated, the
module must be removed and inserted,
or the power switched off and on
Replace module
Correct the configuration (compare
actual and preset configuration). Check
communication paths.
Correct the configuration.
Check whether the PROFIsafe address
on the module matches the
STEP 7 HW Config
configuration in
Check module for proper contact.
Once the fault has been eliminated, the
module must be removed and inserted,
or the power switched off and on
Eliminate short circuit/cross circuit.
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02