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Siemens PM-E F pm DC24V PROFIsafe Installation And Operating Manual Page 158

Et 200s distributed i/o system - fail-safe modules.
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Fail-Safe Modules
7.6 EM 4 F-DI/3 F-DO DC24V PROFIsafe digital electronic module
Causes of Faults and Corrective Measures
The following table contains the possible causes of the faults described for the individual
diagnostic messages of the EM 4 F-DI/3 F-DO DC24V PROFIsafe and remedies.
Table 7- 33
Diagnostic
Message
Short-circuit
Internal error
Parameter
assignment
error
Sensor
voltage or
load voltage
missing
Communicati
on error
Safety-
related
shutdown
Detailed information on F I/O access can be found under
Safety, Configuring and Programming
Programming
158
Diagnostic messages of the EM 4 F-DI/3 F-DO DC24V PROFIsafe, causes of errors and
remedies
Fault
Possible Causes
detection
Depends
Short circuit in the sensor/actuator
on
Cross-circuit at the sensor/actuator Eliminate the cross-circuit within
parameter
settings
Encoder supply short circuit
Internal error
Always
Internal module fault has occurred
Always
Inserted module does not match
configuration
Faulty parameter assignment
PROFIsafe address set incorrectly
in the F-module
Always
No supply voltage or supply
voltage is too low
Always
Error in communication between F-
CPU and module due to defective
PROFIBUS connection or higher
than permissible EMI, for example
PROFIsafe monitoring time set too
low
Configuration of the F-module
does not match safety program
Always
Faulty process signal
Defective sensor
Short circuit between unconnected
sensor cable and the sensor
supply cable
Wire break in connected sensor
cable or the sensor supply cable
Assigned discrepancy time too
short
Switching frequency exceeded
manual.
Corrective Measures
Eliminate the short-circuit.
100 hours after the error has
occurred.
Eliminate the short-circuit.
Replace module
Replace module
Correct configuration (compare
actual and preset configuration)
Check communication paths
Correct configuration
Check whether the PROFIsafe
address on the module matches
the configuration in
Check the supply voltage on the
interconnected PM,
Check module for correct contact
Check the PROFIBUS/PROFINET
connection
Eliminate the interference
Set a greater value for the "F
monitoring time" parameter for the
module in
Generate safety program again;
then load configuration and safety
program into F-CPU again
Check process signal, replace
sensor if necessary
Eliminate short circuit
Eliminate broken wire
Check the assigned discrepancy
time
Reduce the switching frequency
Once the fault is eliminated, the F-
module must be reintegrated in the
safety program
"Diagnostics"
S7 F/FH Systems, Configuring and
manual or the
ET 200S Distributed I/O System - Fail-Safe Modules
Installation and Operating Manual, 08/2008, A5E00103686-07
HW Config
HW Config
S7 Distributed
in the

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