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UMG 96-PA
/ UMG 96-PA
MID
www.janitza.com
74
17. Procedure in the event of errors
Possible error
Cause
Remedy
No display
External fuse for the power supply
voltage has tripped.
Replace fuse.
No current display
Measured voltage is
not connected.
Connect the measured voltage.
Measurement current is not connected.
Connect measurement current.
Current displayed is too large
or too small.
Current measurement in the wrong
phase.
Check connection and correct if necessary.
Current transformer factor is incorrectly
programmed.
Read out and program the current transformer
transformation ratio at the current transformer.
The current peak at the measurement
input has been exceeded by current
harmonics.
Install current transformer with a larger CT ratio.
The current at the measurement input
was not achieved.
Install current transformer with a smaller current
transformer ratio.
Voltage displayed is too small
or too large.
Measurement in the wrong phase.
Check connection and correct if necessary.
Voltage transformer incorrectly
programmed.
Read out and program the voltage transformer ratio at
the voltage transformer.
Voltage displayed is too small. Measurement range exceeded.
Install voltage transformers.
The peak voltage value at the
measurement input has been exceeded
by harmonic components.
Attention! Ensure the measured inputs are not
overloaded.
Phase shift ind/cap.
Current path is assigned to the wrong
voltage circuit.
Check connection and correct if necessary.
Active power consumption /
export is reversed.
At least one current transformer
connection is reversed.
Check connection and correct if necessary.
A current path is assigned to the wrong
voltage circuit.
Check connection and correct if necessary.
Active power is too small or
too large.
The programmed current transformer
ratio is incorrect.
Read out and program the current transformer
transformation ratio at the current transformer
The current path is assigned to the
wrong voltage circuit.
Check connection and correct if necessary.
The programmed voltage transformer
ratio is incorrect.
Read out and program the voltage transformer ratio at
the voltage transformer.
An input/output is not
responding.
The input/output was incorrectly
programmed.
Check programming and correct if necessary.
The input/output was incorrectly
connected.
Check connection and correct if necessary.
Screen “Exceeded measuring
range”
The measuring range has been
exceeded
Check connection and correct if necessary.
Correct the current/voltage transformer ratio.
No connection to the device.
RS485
- Incorrect device address
- Different bus speeds
(baud rate) and / or data frame
- Incorrect protocol.
- Termination missing.
- Correct device address.
- Correct speed (baud rate).
Correct data frame.
- Correct protocol.
- Connect bus with termination resistor.
Device still does not work
despite the above measures.
Device defective.
Send the device to the manufacturer for inspection
and testing.