61
Service and maintenance
Possible error
Active power too
small or too large.
Active power con-
sumption / supply is
reversed.
No connection with
the device.
Despite the meas-
ures above the device
does not work.
Cause
The programmed current
transformer transformation
ratio is incorrect.
The current path is assigned
to the wrong voltage path.
The programmed voltage
transformer transformation
ratio is incorrect.
At least one current trans-
former connection is mixed
up/reversed.
A current path is assigned to
the wrong voltage path.
RS485:
- Device address is incorrect.
- Wrong protocol.
- Termination missing.
Ethernet:
- IP address incorrect
Device is defective.
Remedy
Read out and program the current
transformer transformation ratio at the
current transformer.
Check connection and correct if
necessary.
Read out and program the voltage
transformer transformation ratio at the
voltage transformer.
Check connection and correct if
necessary.
Check connection and correct if
necessary.
Adjust the device address.
Select protocol.
Close bus with terminating resistor
(120 ohm).
Adjust IP address at the device.
Send device to the manufacturer for
checking with a precise description of
the error.
Содержание UMG 604
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