MR TAPCON 260 - Fault Elimination: Measured Values and Parallel Operation Faults; Troubleshooting Measured Value Errors; Troubleshooting Parallel Operation Faults

9 Fault elimination
Maschinenfabrik Reinhausen 2014 1412374092/04 EN TAPCON® 260
Characteristics/detail Cause Remedy
Measured voltage
▪ Measured value too low.
Voltage drop on measuring
lead.
Check measured voltage at plug terminal
MI:01/MI:02.
Measured voltage
▪ Measured value fluctu-
ates.
Possible sources of fault:
▪ Leads laid in parallel.
▪ Tap-change operations.
Check measured voltage at plug terminal
MI:01/MI:02.
Increase distance from source of interfer-
ence.
Install filter if necessary.
Measured current
▪ No measured value.
Line to current transformer
interrupted.
Check wiring.
Short-circuiting jumper in
current transformer not re-
moved.
Remove short-circuiting jumper.
Measured current
▪ Measured value too
high.
▪ Measured value too low.
Transmission ratio not cor-
rectly parameterized.
Correct parameterization.
Incorrect input connected. Remove short-circuiting jumper.
Phase angle
▪ V/I.
Fault in external transformer
circuit.
Check transformer circuit.
Transformer circuit incorrect-
ly parameterized.
Compare with system connection dia-
gram.
Correct parameters.
Compare measurement values on info
screen.
Transpose current transformer connec-
tion.
Check polarity of transformer circuit.
Correct if necessary.
Check circuit.
Correct if necessary.
Check measurement points.
Correct if necessary.
Table 47: Incorrect measured values
Parallel operation faults
Characteristics/detail Cause Remedy
Parallel operation cannot be
activated.
▪ LED not lit up.
"Parallel operation method"
parameter deactivated.
Set parallel operation method parameters.
CAN bus address of device
set to "0".
Set CAN bus address (anything but 0).
Problem with CAN bus.
▪ Device not listed.
Device incorrectly connected
(plug twisted, offset).
Check connections.
Connect as shown in connection diagram.
9.5