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11 Fault elimination
Maschinenfabrik Reinhausen GmbH 2021
144
7817454/02 EN
TAPCON
®
230 Expert
Characteristics/details
Cause
Remedy
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.
Problem with circulating reactive
current minimization parallel oper-
ation method.
Circulating reactive current can-
not be calculated.
Check wiring. Connect as shown in connection
diagram.
Circulating reactive current block-
ing limit exceeded.
Check configuration.
Table 53: Parallel operation faults
11.7 Tap position capture incorrect
Characteristics/detail
Cause
Remedy
Position indicator incorrect.
▪ Leading sign incorrect.
Incorrect wiring.
Check wiring.
Connect as shown in connection diagram.
Minimum value of the analog in-
put signal not configured cor-
rectly.
Check parameters.
Position indicator incorrect.
▪ Display fluctuates.
Interference.
Shield the line.
Increase distance from source of interference.
Lay interference lines separately.
Route signal in separate lines (filter, shielded
lines).
No position indicator.
▪ "- -" is displayed.
No measurement signal.
No L- for digital input.
Connect signal as shown in connection dia-
gram.
Check wiring.
Connect as shown in connection diagram.
No position indicator.
▪ "?" is displayed.
Bit combination (code) impermis-
sible.
Check wiring.
"Motor running" signal present.
Check the signal sequence.
Tap position capture over resistor
contact series faulty.
Faulty calibration.
Calibrate tap position capture over resistor con-
tact series.
Modified contact resistance val-
ues of the resistor contact series
(e.g. due to weather or age).
Calibrate tap position capture over resistor con-
tact series.
Table 54: Tap position capture
Содержание TAPCON 230 AVT
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