109
UMG 509-PRO
www.janitza.com
Failure mode
Cause
Remedy
Active power too small
or too great.
The programmed current transformer
ratio is incorrect.
Read and program the current
transformer ratio on 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 the voltage transformer ratio
on the voltage transformer and
program.
One output is not re-
sponding.
The output has been programmed
incorrectly.
Check programming and correct if
necessary.
The output has been connected incor-
rectly.
Check connection and correct if
necessary.
Display of measuring
range
exceeded (overload)
Voltage or current measurement input
outside the measuring range
(see the section Overrange)
Check connection and correct if
necessary.
Use suitable voltage or current
transformers.
Read and program the voltage or
current transformer ratio on the
transformer.
No connection to the
device.
RS-485
- Incorrect device address.
- Different bus speeds
(Baud rate).
- Incorrect protocol.
- No termination.
- Correct the device address.
- Correct the speed
(baud rate).
- Correct the protocol.
- Terminate bus with termination
resistor.
Ethernet
- Incorrect device IP address
- Incorrect addressing mode
- Correct the IP device address.
- Correct the mode for assigning the
IP address
Despite the above mea-
sures, the device does
not function.
Device defective.
Send the device to the
manufacturer for inspection with an
exact
description of the fault.
