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Service and maintenance
7.4 Troubleshooting guide
74
Equipment Manual, 09/2022, L1V30415168B-03
7.4
Troubleshooting guide
Remedies for the resolution of faults
Fault
Remedies
Device is not working
•
Check power supply
•
Check supply voltage
•
Check fuse
Voltage or current measured values are not
displayed
•
Check fuse
•
Check configuration
(see Parameterizing the device (Page 54))
Voltage values are not plausible
•
Check the voltage transformer setting and correct if necessary
Current values are not plausible
•
Check the current transformer setting and correct if necessary
No communication
•
Check the communication settings
(incorrect IP address, incorrect subnet or gateway?)
•
Check firewall, if present
(possibly preventing communication to the Modbus ports)
"Overload" LED flashes red
•
Voltage or current input overridden. Check parameters of the
measuring voltage
•
Check installed current transformer
(dimensioning too small)
Power values are incorrect, although voltage
and current are correctly applied
•
Check voltages and currents of the phases
(not properly connected to one another)
•
Check the current transformer
(for incorrect polarity)
If the device fault cannot be remedied by the measures given above, the device is probably
defective.
More help can be found on the Internet. (
https://www.siemens.de/lowvoltage/technical-
assistance
)
If the device is defective, please proceed as follows:
•
See chapter Warranty (Page 75) if the device has become defective within the warranty
period.
•
If the device has become defective outside the warranty period, the device must be
disposed of in accordance with local disposal regulations.
See also
Parameterizing the device (Page 54)
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