Hitachi WJ C1 Series

Chapter 10 Monitor Functions
10-1-8
10.1.9 Monitor P-N Voltage (Internal DC Voltage)
 How to see the movement of the voltage between P and N terminal (internal DC voltage) of the
inverter?
 How to monitor the voltage between P and N terminal (internal DC voltage) when the motor is in
regenerative state?
DC bus voltage monitor [d102]
 Displays the DC voltage (DC voltage between P and N on the inverter main circuit terminal
block) charged in the main circuit capacitor of the inverter.
 During running, the monitor value also fluctuates according to the actual inverter DC voltage.
 The voltage between P-N is DC voltage. If the voltage between P and N exceeds approx. 400
VDC (200 V class)/ approx. 800 VDC (400 V class), "Overvoltage error [E07]" occurs.
 See "15.2 Troubleshooting for Protection Functions Related Error" for more information about
troubleshooting when [E07] occurs.
Code
Item
Description
Data
[d102]
DC bus voltage monitor
Displays the DC bus voltage of the inverter.
0.0 to 1000.0 (VDC)
Q
A
!