5.8
Limiting Torque
The SERVOPACK provides the following four methods for limiting output torque to protect the machine.
Limiting Method
Internal torque limit
External torque limit
Torque limiting by analog
voltage reference
External torque limit + Torque
limiting by analog voltage ref-
erence
Note: The maximum torque of the servomotor is used when the set value exceeds the maximum torque.
5.8.1 Internal Torque Limit
This function always limits maximum output torque by setting values of following parameters.
Forward Torque Limit
Pn402
Setting Range
Reverse Torque Limit
Pn403
Setting Range
The setting unit is a percentage of the rated torque.
Note: If the settings of Pn402 and Pn403 are too low, the torque may be insufficient for acceleration or deceleration of the
servomotor.
No Internal Torque Limit
(Maximum torque can be output)
Maximum torque
Always limits torque by setting the parameter.
Limits torque by input signal from the host controller.
Assigns a torque limit by analog voltage reference.
Combines torque limiting by an external input and by analog volt-
age reference.
Setting Unit
0 to 800
1%
Setting Unit
0 to 800
1%
Torque waveform
Speed
t
Description
Speed
Position
Factory Setting
800
Speed
Factory Setting
800
Internal Torque Limit
Limiting torque
Speed
Pn402
Pn403
5.8 Limiting Torque
Reference
Section
5.8.1
5.8.2
5.8.3
5.8.4
Torque
Classification
When Enabled
Setup
Immediately
Position
Torque
Classification
When Enabled
Setup
Immediately
t
5
5-53