Hitachi SJ700-4000HFU2

Chapter 4 Explanation of Functions
4-70
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
Function code
Data or range of data
Description
Terminal function
C021 to C025
52
RVR: Reverse rotation signal
Alarm relay terminal function
C026
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.
Error code
Description
1
E10.*
CT error
2
E11.*
CPU error
3
E14.*
Ground-fault protection
4
E20.*
Temperature error due to cooling-fan fault
5
E23.*
Gate array communication error
6
E25.*
Main circuit error
Item
Function code
Data or range of data
Description
Terminal function
C021 to C025
53
MJA: Major failure signal
Alarm relay terminal function
C026
C021 to C025: Terminal [11] to [15] functions
C026: Alarm relay terminal function
Related code
Output frequency (Hz)
Forward rotation signal
Reverse rotation signal
C021 to C025: Terminal [11] to [15] functions
C026: Alarm relay terminal function
Related code