Torque Control; Torque Bias Function - Omron SYSDRIVE MX2 SERIES User Manual

5-11 Sensorless Vector Control

Torque Control

This function is enabled only when Sensorless Vector Control is selected for control method (A044/A244 = 03).
To operate in the torque control, allocate "52: ATR" to any multi-function input terminal. While
the ATR terminal is turned on, the torque reference input is enabled.
The torque reference source canbe seledted from two analog types, Digital Operator, etc.
using P033. When analog setting is used, the full-scale value is 200%. (When voltage is used,
10 V corresponds to 200%.)
The torque control speed depends on the balance between torque and load. To prevent the
Inverter from running out of control, set a speed limit value in P039 (forward) or P040 (reverse).
Increasing the speed/torque control switching time reduces the switching shock. The torque reference
value under this function assumes that the torque corresponding to the Inverter's rated current is
100%. Accordingly, the absolute value of torque varies depending on the motor to be combined.
Parameter
P033
5
P034
P039
P040
P041
C001 to
C008

Torque Bias Function

This function is used to apply a bias to the torque reference generated by torque control. This function
is enabled only when Sensorless Vector Control is selected for control method (A044/A244 = 03).
The torque bias value under this function assumes that the torque corresponding to the Inverter's rated
current is 100%. Accordingly, the absolute value of torque varies depending on the motor to be combined.
Parameter
P036
P037
P038
5-155
Function name
No.
Torque Reference Input
Selection
Torque Reference
Setting
Speed Limit Value in
Torque Control (forward)
Speed Limit Value in
Torque Control (reverse)
Speed/Torque Control
Switching Time
Multi-function Input
Selection
Function name
No.
Torque Bias Mode
Torque Bias Value
Torque Bias Polarity
*1
Selection
Data
00: Input from the FV terminal
(10V = 200%)
01: Input from the FI terminal
(20 mA = 200%)
03: Input via the Digital Operator
06: Do not set.
0. to 200.
(Torque reference when P033 = 03)
0.00 to 99.99/100.0 to 120.0
0.00 to 99.99/100.0 to 120.0
0 to 1000
52: ATR (Torque reference input
permission)
Data
00: Disabled
01: Set via the Digital Operator
05: Do not set.
−200 to +200
(Enabled when P036 = 01)
00: As per sign
01: Depends on the RUN direction
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Default
Unit
setting
00 −
0. %
0.00 Hz
0.00 Hz
0. ms
− −
Default
Unit
setting
−
00
0. %
−
00