Frequency Command Source (Fref); Run Command Source (Ref); 2Nd Motor In Operation (Setm); Ground Fault Detection (C155) - Hitachi NES1-004SB Quick Reference Manual

Chapter 7 Explanation of Functions

7.8.22 Frequency command source (FREF)

This function outputs a signal when the (A001 = 02). However, this function is disabled when the second
control mode.
The rest of the time (A001 = 02) the signal is turned OFF.
Item
Terminal [11] functions
Alarm relay terminal function

7.8.23 RUN command source (REF)

This function outputs a signal when the (A002 = 02). However, this function is disabled when the second
control mode.
The rest of the time (A002 = 02) the signal is turned OFF.
Item
Terminal [11] functions
Alarm relay terminal function

7.8.24 2nd Motor in operation (SETM)

When SET terminal of intelligent input is ON, it output signal.
Item
Terminal [11] functions
Alarm relay terminal function
7.8.25 Ground fault detection [C155]
When the power is turned on, then select whether to ground fault detection.
Ground fault detection might be detected when the power is turned while the motor is rotating.
Item
Ground fault detection
7.8.26 Out phase loss detection [C157]
This function is to choose whether to perform output phase loss detection.
This function works when the output frequency for not less than 5Hz but not more than 100Hz.
In some cases depending on the state of the output current is low or not detected, this function dosen't
work. In addition, this function may be detected when hunting.
Item
Out phase loss detection
Function code
C021
C026
Function code
C021
C026
Function code
C021
C026
Function code
C155
Function code
C157
7 - 76
Data
58 FREF：Frequency reference
Data
59 REF：Run reference
Data
nd
60 SETM：2
Data
00,01 00：OFF、01：ON
Data
00,01 00：OFF、01：ON
Description
Description
Description
motor in operation
Description
Description