janitza UMG 103-CBM, User Manual And Technical Data

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www.janitza.com UMG 103-CBM
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Failure mode Cause Remedy
No LED is lit
External fuse for the supply voltage has tripped. Replace fuse.
Device defective. Send the device to the manufacturer for repair.
The red LED is lit Device defective.
Send the device to the manufacturer for inspec-
tion.
The LEDs blink alternately.
Firmware checksum error.
Operation is faulty.
Perform a firmware update.
Measured current is
too high or too low. *
Indication if current is too high:
Red LED blinks
Current measurement on the wrong phase. Check connection and correct if necessary.
Current transformer factor incorrectly pro-
grammed Read and program the current transformer ratio
on the current transformer.
The peak current value at the measuring input
was exceeded by current harmonics. Install current transformers with a higher current
transformer ratio.
The current at the measuring input is too low.
Install current transformers with a lower current
transformer ratio.
The measured voltage is
too high or too low. *
Display when voltage is too high:
Red LED blinks
Measurement on the wrong phase. Check connection and correct if necessary.
Voltage transformer programmed incorrectly.
Read the voltage transformer ratio on the voltage
transformer and program.
Measured voltage *
is too low.
Underrange. Use a voltage transformer.
The voltage peak value at the measuring input is
exceeded by harmonics. Attention! Make sure that the measuring inputs
are not overloaded.
The active power is too high *
or too low. *
The programmed current transformer ratio is
incorrect Read and program the current transformer ratio
on the current transformer.
A current circuit is assigned to the wrong voltage
circuit.
Check connection and correct if necessary.
The programmed voltage transformer ratio is
incorrect Read the voltage transformer ratio on the voltage
transformer and program.
Active power consumed/delivered
is reversed.
At least one current transformer connection is
reversed.
Check connection and correct if necessary
A current circuit is assigned to the wrong voltage
circuit.
No connection to the device.
The LEDs blink simultaneously.
RS-485
- Incorrect device address.
- Different bus speeds (baud rate) and / or
data frames
- Incorrect protocol.
- No termination.
- Correct the device address.
- Correct the speed (baud rate).
Correct the data frame.
- Correct the protocol.
- Terminate bus with termination resistor.
Despite the above measures,
the device does not function.
Device defective.
Send the device and error description to the
manufacturer for inspection.
12. Procedure in the event of a malfunction
ATTENTION
Material damage due to overloaded measuring inputs!
Too high current and voltage values overload the measuring inputs.
Adhere to the limit values specified on the rating plate and in the technical data.