MR TAPCON 230 Expert - 11.6 Parallel operation faults

11 Fault elimination
Maschinenfabrik Reinhausen GmbH 2021 1437817454/02 EN TAPCON
®
230 Expert
Characteristics/details Cause Remedy
Measured voltage
▪ Measured value too low
Voltage drop on the measuring
line.
Check the measured voltage.
Measured voltage
▪ Measured value fluctuates
Possible sources of interference:
▪ Cables laid in parallel.
▪ Tap-change operations.
Check the measured voltage.
Increase the distance from the source of inter-
ference.
Install a filter if necessary.
Measured current
▪ No measured value
Line to the current transformer in-
terrupted.
Check wiring.
Short-circuiting jumper in current
transformer is not removed.
Remove the short-circuiting jumper.
Measured current
▪ Measured value too high
▪ Measured value too low
Current transformer not correctly
parameterized.
Correct parameterization.
Table52: Incorrect measured values
11.6 Parallel operation faults
Characteristics/details Cause Remedy
Problem with CAN bus.
▪ Device not listed.
Device incorrectly connected. Check connections.
Connect as shown in connection diagram.
Devices have the same CAN bus
addresses.
Set different CAN bus addresses.
CAN bus address of device set to
"0".
Set CAN bus address (anything but 0).
Problem with parallel operation. Different parallel operation meth-
ods set for devices in the parallel
operation group.
Check configuration.
Problem with master/follower par-
allel operation method.
More than 1 device is configured
as master in the parallel operation
group.
Check configuration.
No device configured as master
in the parallel operation group.
Check configuration.
Invalid tap position of master or
follower.
Check tap position.
Check wiring. Connect as shown in connection
diagram.