5-15
5-3 Torque Control
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
  5
Basic Control Mode
Control Mode Selection (Pn001)
Select the torque control (Set values: 2=Torque control, 4=Switching between Position control
and Torque control or 5=Switching between Speed control and torque control).
Analog Torque Command Input Process (Pn317, Pn318, Pn319, Pn320)
Convert the voltage input by an analog input to a torque command to control the motor.
The conversion of analog torque command is explained below.
*1. The motor rotation direction (CW, CCW) specified by the command direction is determined
by the setting of Pn000.
Parameter 
number
Parameter name Explanation
Setting 
range
Unit
Pn317
Torque 
Command/Speed 
Limit Selection
Select the input location for the torque 
command and speed limit value.
0: Torque command: Analog input 1 
speed limit: Pn321
1: Torque command: Analog input 2 
speed limit: Analog input 1
2: Torque command: Analog input 1 
speed limit: Pn321, Pn322
0 to 2 −
Pn318
Torque Command 
Direction 
Selection
Select the method for selecting the 
direction for the torque command.
0: Use the sign 
1: Use TVSIGN
0 or 1 −
Pn319
Torque Command 
Scale
Set the input gain for analog torque 
command input.
10 to 100 0.1 V/100%
Pn320
Analog Torque 
Command 
Rotation Direction 
Switching
Reverse the polarity of the torque 
command input.
0: Forward operation
1: Reverse operation
0 or 1 −
Torque 
Command / 
Speed 
Limit 
Selection 
(Pn317)
Torque 
Command 
Direction 
Selection 
(Pn318)
Analog 
Torque 
Command 
Rotation 
Direction 
Switching 
(Pn320)
Analog torque 
command
(TREF)
Torque 
command 
sign 
selection 
(TSIGN)
Torque 
command 
direction*
1
Conversion
graph
0
0
0
+Voltage (0 to 10 V)
Not 
affected
Forward 
direction
Figure A
-Voltage (-10 to 0 V)
Reverse 
direction
1
+Voltage (0 to 10 V)
Reverse 
direction
Figure B
-Voltage (-10 to 0 V)
Forward 
direction
1
Not affected
Not affected
OFF
Forward 
direction
Figure C
ON
Reverse 
direction