Siemens SIMATIC ET 200S Installation And Operating Manual page 93

Causes of Faults and Corrective Measures
The following table lists the possible causes of faults and corrective measures for the
individual diagnostic messages of the PM-E F pp 24 VDC PROFIsafe.
Table 7-12
Diagnostic
Message
Short circuit
Over-
temperature
Internal fault
Parameter
assignment
error
Missing external
auxiliary supply
Communication
error
Safety-related
shutdown
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
Causes of Faults and Corrective Measures for Diagnostic Messages of the
PM-E F pp 24 VDC PROFIsafe
Fault Possible Fault Causes
Detection
Always Cross circuit between
P1 and L+
Always Shutdown due to
violation of upper or
lower temperature limit
value 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 power supply or
power too low (e.g.,
voltage dip at
F-module)
Always Error in communication
between F-CPU and
module, e.g., due to
defective PROFIBUS
connection or higher
than permissible EMI
PROFIsafe monitoring
time set too low
Configuration of the
F-module does not
match safety program
Always Switching frequency
exceeded
7.3 PM-E F pp DC24V PROFIsafe power module
Corrective Measures
To correct cross circuit the module must
be removed and inserted or switched on
and off
Check load wiring, check ambient
temperature, check whether permissible
output current is exceeded at the ambient
temperature. Once the fault is 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), and check
communication paths. Correct the
parameter assignment.
Check whether the PROFIsafe address
on the module matches the configuration
STEP 7 HW Config
in
Check module for correct contact
After correction of the fault the module
must be removed and inserted or
switched off and on
Test PROFIBUS connection. Correct
faults.
Set a higher value for the "F monitoring
time" parameter for the module in
HW Config
Generate safety program again; then
download configuration and safety
program to F-CPU again
Reduce the switching frequency
Fail-Safe Modules
STEP 7
7-33