Forward Rotation Signal (Fwr) (C021 To C026); Reverse Rotation Signal (Rvr) (C021 To C026); Major Failure Signal (Mja) (C021 To C026) - Hitachi L700 SERIES Instruction Manual

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.
Item
Terminal function
Alarm relay terminal function
Function code
C021 to C025
C026
Error code
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
Function code
C021 to C025
C026
Chapter 4 Explanation of Functions
C021 to C025: Terminal [11] to [15] functions
C026: Alarm relay terminal function
Data or range of data
52
C021 to C025: Terminal [11] to [15] functions
C026: Alarm relay terminal function
Description
Data or range of data
53
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Related code
Description
RVR: Reverse rotation signal
Related code
Description
MJA: Major failure signal