Omron SYSDRIVE MX2 SERIES, User Manual

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6 Vector Control and Applied Functions
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
6
-4 T
o
rque Control
6
6-
4-2 T
orqu
e Bias Fun
ction Settings
Use this function to apply bias to the torque reference in the torque control mode.
• This function is enabled when the 1st/2nd Control Method (A044/A244) is set to 03 (Sensorless vec-
tor control).
• Set the Torque Bias Selection (P036) to 01 (Input via Digital Operator).
• The torque control function regards the torque reference value equivalent to the rated output current
of the inverter as 100%.
To convert it to the rated motor torque ratio, use the following formula:
• In the Torque Bias Polarity Selection (P038), set the polarity of the torque bias value.
00: As per sign
The forward torque increases when the Torque Bias Value is positive (
+
) and the reverse torque
increases when the Torque Bias Value is negative (
−
), independent of the RUN direction.
01: Dependent on RUN direction
The direction in which the torque bias function works depends on the RUN command direction.
6-4-2 Torque Bias Function Settings
Rated motor torque ratio = [Torque bias set value]
×
[Rated output current of inverter] / [Rated
motor current]
Forward command: Forward torque increases when Torque Bias value is positive (
+
).
Reverse torque increases when Torque Bias value is negative (
−
).
Reverse command: Reverse torque increases when Torque Bias value is positive (
+
).
Forward torque increases when Torque Bias value is negative (
−
).
Parameter
No.
Function name Data
Default
data
Unit
P036 Torque Bias Selection
00: Disabled
00
−
01: Digital Operator
05: Option (No applicable Option)
P037 Torque Bias Value
−
200. to 200. (Enabled when P036 = 01) 0. %
P038
Torque Bias Polarity
Selection
00: As per sign
00
−
01: Dependent on RUN direction
P039/P040
Terminal ATR
Speed detec-
tion value
Torque reference
input
Speed limit
value
Speed
monitor
Speed
control
(P control)
Torque Bias Value
(P037)
Torque limit
Torque reference
(Reference value for
torque control)
The Speed control (P control) operates when a
speed detection value exceeds the speed limit value.