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Monitor Display Unit (MDU)
Indicator
No.
Port
1
MUS05A
2
FE
3
CAN
4
RS485_1
5
USB Host
6
RST
7
SD
8
SW1–4
Monitoring Board
Indicator Status
Blinking green slowly
Blinking green fast
Blinking red
Off
Function
N/A
Network port connecting to the management system when the PDU8000
uses SNMP or Modbus-TCP
Internal communications and power supply port for the MDU LCD
Northbound serial port connecting to the management system when the
PDU8000 uses Modbus-RTU
USB Host port
Used for resetting the MDU
Installing an SD card
DIP switch: By setting DIP switch toggles in different combinations, you
can perform operations such clearing historical alarms, clearing logs, and
restoring factory settings
Indicator
Description
The monitoring board is running properly.
The communication fails. The MDU generates a monitoring board
communication failure alarm.
Power supply to the monitoring board is faulty or there is a surge
current impact alarm.
The monitoring board is not working.
Indicator
Status
Red
Yellow
Green
Off
2
Meaning
A critical alarm has been
generated, and the
buzzer is sounding
constantly.
A major alarm has been
generated, and the
buzzer is sounding at
intervals of 0.5s.
A warning has been
generated, or the
precision PDC is running
properly.
The MDU is powered off.
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