Hitachi WJ C1 Series

Chapter 9 Inverter Functions
9-11-2
9.11.2 Outputting a Major Failure Signal
 How to detect an error condition that cannot be reset in the inverter and inform the system?
 Assigning a "Major failure [MJA] (53)" to one of the output terminal functions
([C021]/[C022]/[C026]) enables the inverter to output a major failure signal.
 Trips that are determined to be major failures are shown in the table below. If any of these
occurs, the trip cannot be released by resetting.
 If this signal is output, the inverter hardware may be malfunctioning. Please confirm the trip
history and take appropriate action.
Error code
Name
Description
E08
Memory error
There is an abnormality in the memory element of the inverter.
E11
CPU error
There is an abnormality in the drive CPU of the inverter.
E14
Ground fault
The inverter has ground fault.
E30
Driver error
There is an abnormality in the main element of the inverter.
Code
Item
Description
Data
[C021]
[C022]
[C026]
Output terminal function
Major failure [MJA]:
This signal turns on when an error (a trip
shown in the table above) that is
determined to be a major failure occurs.
53
Q
!
A