Siemens SINAMICS PERFECT HARMONY GH180, Function Manual

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11.9 Drive Faults and Alarms User I/O Related
Handling Internal (User) I/O Related Faults
Table 11-8 Internal (user) I/O related faults
Fault display Type Enable Potential causes and corrective actions
Loss of signal (1 to 12) A Menu/
SOP Cause
The software detected a loss of signal on one of the 4 to 20 mA inputs (1
to 12). This is usually a result of an open circuit or defective driver on the
current loop.
Action
1. Check connection to the user I/O module's 4 to 20 mA input corre‐
sponding to the loss of signal message and associated wiring.
2. Replace affected user I/O module.
3. Contact Siemens customer service.
Int I/O Comm Fault F Fixed Cause
This fault occurs when the system has had a problem communicating to a
user I/O module. A number attached to the fault message will indicate
which module the system was trying to communicate with when the error
occurred. However, this number may not always be the actual module
which has a problem. Noise on the fiber optic network may give cause an
erroneous result.
Action
1. Replace affected user I/O module.
2. Contact Siemens customer service.
Int I/O Internal Err F Fixed Cause
This fault occurs when a module reports an error. The three types of mod‐
ule errors which are reported and therefore can generate this fault are:
• EEprom error
• board type error
• watchdog time out.
Which of those errors actually generated the fault may be identified by the
flashing LEDs on the module which reported the error. A number attached
to the fault message will indicate which module reported the error.
Action
1. Replace affected user I/O module.
2. Contact Siemens customer service.
Troubleshooting Faults and Alarms
11.9 Drive Faults and Alarms User I/O Related
Control Manual
460
Operating Manual, A5E50491925A