PDU8000 Modular Precision PDC V2.0
User Manual
8 Maintenance Guide
Issue 03 (2018-01-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
124
Figure 8-1
Common polarity terminal and common terminal of the transformer
(1) Common polarity terminal
(2) Common terminal
8.3 Troubleshooting
Symptom
Possible Cause
Solution
The LCD fails to
display branch
currents.
The monitoring board communications
cable or the secondary cable to the
corresponding branch current
transformer is not properly connected.
The current monitoring board or current
transformer is faulty.
1.
Replace the
monitoring board.
2.
Contact Huawei
technical support.
The LCD fails to
display the circuit
breaker status.
The communications cable of the
Boolean value collection module or the
corresponding branch Boolean value
signal cable is not properly connected.
The Boolean value collection module or
auxiliary switch contact is faulty.
1.
Replace the
monitoring board.
2.
Contact Huawei
technical support.
The LCD is black
or blinks.
The input CAN cable is disconnected.
The LCD is faulty.
Secure the input
CAN cable.
Replace the MDU.
The indicators of
the monitoring
board do not light
up.
Cables are not properly connected.
The monitoring board is faulty.
1.
Replace the
monitoring board.
2.
Contact Huawei
technical support.