Hitachi SJ300 Series, Инструкция по эксплуатации

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Using Intelligent Output Terminals
Oper
ations
a
nd Moni
tor
ing
4–50
Over-torque
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
“Torque Limit” on page 4–37 , 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.
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
OFF when estimated torque is below the levels
set in C055 to C058
Valid for
outputs:
11, 12, 13, 14, 15,
AL0 – AL2
Required
settings:
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 4–9 .
Inverter output
terminal circuit
RY
+
–
Example: (Default output configuration
shown—see page
3–53 .)
OTQ