User Manual

Chapter 7 Explanation of Functions
7 - 74
7.8.19 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
52 RVR: Reverse rotation signal
Alarm relay terminal function C026
7.8.20 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.
No. Error code Description
1 E08.* Memory error
2 E10.*
Current detection erro
r
3 E11.* CPU error
4 E14.* Ground-fault protection
5 E19.* Inverter thermal detection system error
Item Function code Data or range of data Description
Terminal function C021
53 MJA: Major failure signal
Alarm relay terminal function C026
Output frequency (Hz)
Forward rotation signal
Reverse rotation signal