Hitachi SJ300-037HFE 사용자 설명서

Using Intelligent Output Terminals

Oper

ations

a

nd Moni

tor

ing

The Over-torque function [OTQ] turns ON when the estimated value of output torque of motor 
increases more than the arbitrary level set for the output. Recall that the torque limit function, 
covered in 

, actually limits the torque during certain operating 

conditions. Instead, the over-torque output feature only monitors the torque, turning ON output 
[OTQ] if the torque is above programmable thresholds you set. The [OTQ] function is valid 
only for sensorless vector control, 0-Hz domain sensorless vector control, or vector control 
with sensor. Do not use the [OTQ] output, except for these inverter operational modes.

The assignment of the Over-torque function to an output terminal [OTQ] is detailed in the 
following table.

C055

Over-torque, forward-driving level setting

0 to 200%

C056

Over-torque, reverse-regenerating, level setting

0 to 200%

C057

Over-torque, reverse-driving, level setting

0 to 200%

C058

Over-torque, forward-regenerating, level setting

0 to 200%

C021

to

C025

Intelligent output terminal [11] to [15] function

07

07

OTQ

Over-torque

ON

when estimated torque exceeds the level 
set in C055 to C058

OFF

when estimated torque is below the levels 
set in C055 to C058

11, 12, 13, 14, 15,
AL0 – AL2

C055, C056, C057, C058
A044 = 03 or 04 or 05

Notes: 
• This output is valid only for  sensorless 

vector control, 0-Hz domain sensorless vector 
control, or vector control with sensor

CM2

13

14

15

11

12

See I/O specs on page 

.

Inverter output 
terminal circuit

RY

+
–

Example: (Default output configuration 
shown—see page 

OTQ