janitza UMG 509, Operation Manual And Technical Data, Page: 105 / 124

105
UMG 509
Possible fault Cause Remedy
Effective power too large or too
small. The programmed CT ratio is incorrect. Read out and program the CT 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 output is not responding.
The output was incorrectly programmed. Check the settings and correct if necessary.
The output was incorrectly connected. Check connection and correct if necessary.
Measurement range exceeded
display (overload) Voltage and current measurement input outside
the measurement range
(See section Measurement range exceeded) Check connection and correct if necessary.
Use suitable voltage and current transformers.
Read out and program the voltage or current
transformer ratio at the transformer.
No connection with the device. RS485
- Device address is incorrect.
- Different bus speeds
(Baud rate).
- Wrong protocol.
- Termination missing.
- Adjust the device address.
- Adjust speed (baud rate).
- Select the correct protocol.
- Terminate bus with termination resistor.
Ethernet
- IP Device address is incorrect.
- Incorrect addressing mode
- Adjust IP device address.
- Adjust the IP address assignment mode
Device still does not work despite
the above measures. Device defective. Send the device to the manufacturer for
inspection and testing along with an accurate
fault description.