MR TAPCON - Parallel Operation Faults

10 Fault elimination
Maschinenfabrik Reinhausen GmbH 2020 2773587317/21 EN TAPCON
®
Characteristics/details Cause Remedy
Measured current
▪ No measured value.
Line to current transformer inter-
rupted.
Check wiring.
Short-circuiting jumper in current
transformer not removed.
Remove short-circuiting jumper.
Assembly UI1 or UI3 defective
▪ RDY LED does not light up
▪ RDY LED flashes
Contact Maschinenfabrik Reinhausen GmbH.
Measured current
▪ Measured value too high.
▪ Measured value too low.
Current transformer not correctly
parameterized.
Correct parameterization.
Table122: Incorrect measured values
10.6 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.
Problem with master/follower par-
allel operation method:
▪ Master/follower switching char-
acteristics is "in synch".
Master and followers have differ-
ent tap positions.
Check tap position capture or check why the
tap-change operation has not been undertaken
(e.g. mechanical defect), then perform one of
the following steps:
▪ Manually correct the master's tap position.
▪ Restart master.
▪ Set master/follower switching characteristics
to "sequential".
▪ Change master device to follower and define
a different device as the master.