Forward Rotation Signal (Fwr) (C021 To C026); Reverse Rotation Signal (Rvr) (C021 To C026); Major Failure Signal (Mja) (C021 To C026) - Hitachi SJ700-4000HFU2 Instruction Manual

Chapter 4
4.2.75 Reverse rotation signal (RVR)
The inverter continues to output the forward rotation (RVR) signal
while it is driving the motor for reverse operation.
The RVR signal is turned off while the inverter is driving the motor for forward operation or stopping the motor.
Item
Terminal function
Alarm relay terminal function
Output frequency (Hz)
Forward rotation signal
Reverse rotation signal
4.2.76 Major failure signal (MJA)
The inverter outputs the major failure (MJA) signal in addition to an
alarm signal when it trips because of one of the errors listed below.
(This signal function applies to the tripping caused by hardware.)
No.
1
2
3
4
5
6
Item
Terminal function
Alarm relay terminal function
Function code
C021 to C025
C026
Error code
E10.* CT error
E11.* CPU error
E14.* Ground-fault protection
E20.* Temperature error due to cooling-fan fault
E23.* Gate array communication error
E25.* Main circuit error
Function code
C021 to C025
C026
4-70
Explanation of Functions
Related code
C021 to C025: Terminal [11] to [15] functions
C026: Alarm relay terminal function
Data or range of data
52 RVR: Reverse rotation signal
Related code
C021 to C025: Terminal [11] to [15] functions
C026: Alarm relay terminal function
Description
Data or range of data
53 MJA: Major failure signal
Description
Description