Hitachi SJ300-037HFE ユーザーズマニュアル
Using Intelligent Output Terminals
Oper
ations
a
nd Moni
tor
ing
4–50
Over-torque
Signal
Signal
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
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.
[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.
following table.
Code
Function/Description
Data or Range
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
Opt.
Code
Symbol
Function Name
Output
State
Description
07
OTQ
Over-torque
ON
when estimated torque exceeds the level
set in C055 to C058
set in C055 to C058
OFF
when estimated torque is below the levels
set in C055 to C058
set in C055 to C058
Valid for
outputs:
outputs:
11, 12, 13, 14, 15,
AL0 – AL2
AL0 – AL2
Required
settings:
settings:
C055, C056, C057, C058
A044 = 03 or 04 or 05
A044 = 03 or 04 or 05
Notes:
• This output is valid only for sensorless
• This output is valid only for sensorless
vector control, 0-Hz domain sensorless vector
control, or vector control with sensor
control, or vector control with sensor
CM2
13
14
15
11
12
See I/O specs on page
.
Inverter output
terminal circuit
terminal circuit
RY
+
–
–
Example: (Default output configuration
shown—see page
shown—see page
OTQ