Yaskawa MP940 - Manual (Page 302)

Parameters
6.4.6 Torque-related Parameters
6-62
6.4.6 Torque-related Parameters
Table 6.8 Torque-related Parameter Table
Parameter No. Digit
Name (Setting
Range)
Details Default
Control
Modes
Pn400
Torque Reference
Input Gain 0.1 V/rated
torque
10 to 100 Do not use this parameter when using an MP940. 30 Speed
Torque
Position
Pn401
Torque Reference
Filter Time Constant 0.01ms
0 to 65535 If there is machine vibration which may be caused by the servo-
drive, try adjusting the filter time constant in Pn401. This may
stop the vibration.
The above constant is the filter time constant of the torque refer-
ence to be set in the SERVOPACK. The smaller the value, the
faster the speed control response will be. There is, however, a
certain limit depending on machine conditions. 100 Speed
Torque
Position
Pn402
Forward Torque Limit %
0 to 800 Use this parameter to limit the maximum output torque to protect
the machine and workpiece (internal torque limit).
This parameter sets the maximum torque limits for forward and
reverse rotation.
The torque limit function always monitors torque and outputs the
signals below when the limit is reached.
The following signals are output by the torque limit function.
• /CLT
Conditions for /CLT signal output: Allocate Pn50F.0 to any of
output terminals S01 to S03.
• Monitor Mode Un006
The torque limits are specified as a percentage of the rated
torque.
Note: If torque limit is set higher than the maximum torque of
the servomotor, the maximum torque of the servomotor is
the limit.
Application Example: Equipment Protection
800 Speed
Torque
Position
Pn403
Reverse Torque Limit
Torque limit
Too small a torque limit will
result in an insufficient torque
during acceleration and
deceleration.
Torque
Motor
speed