Siemens SIMATIC ET 200S Installation And Operating Manual page 78

Fail-Safe Modules
7.2 PM-E F pm DC24V PROFIsafe Power Module
Causes of Errors and Corrective Measures
The following table lists the possible causes of errors and corrective measures for the
individual diagnostic messages of the PM-E F pm 24 VDC PROFIsafe power module.
Table 7-6
Diagnostic
Message
Short circuit
Overload
Over-
temperature
Wire break
Internal error
Parameter
assignment
error
Missing external
auxiliary supply
7-18
Causes of Errors and Corrective Measures for Diagnostic Messages of the
PM-E F pm 24 VDC PROFIsafe
Fault Possible Fault Causes
Detection
Always Short circuit in the
actuator
Cross-circuit in the
actuator
Internal error
Short circuit in P1 and
P2, because actuators
connected to standard
DO modules are not
supplied by means of
the terminal modules of
the standard DO
modules
For "1" Output stage is
output signal overloaded and
only becomes too hot
Always Shutdown due to
violation of upper or
lower temperature limit
value in the module
case.
For "1" Line break
output signal
only
Always Internal module fault
has occurred
Always Inserted module does
not match configuration
incorrect parameters
PROFIsafe address set
incorrectly in the
F-module
Always No power supply or
power too low (e.g.
voltage dip at
F-module)
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
Corrective Measures
To correct short or cross circuit the
module must be removed and inserted or
switched on and off
Replace module
Supply power to actuators on standard
DO modules via terminal modules of the
standard DO modules. Once the fault is
eliminated, the module must be removed
and inserted or the power switched off
and on.
Eliminate the overload.
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.
Correct the process wiring, and check
whether the output current is less than the
minimum permissible output current of
20 mA
Repair the wire break, ensure the
specified minimum load (see technical
specifications)
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 on and
off
ET 200S Distributed I/O System - Fail-Safe Modules