5-15
5-8 Torque Limit
5
Operating Functions
5-8 Torque Limit
This function limits the output torque of the Servomotor.
This function is effective in the following cases:
Pressing a moving part of a machine (such as a bending machine) against a workpiece with a
constant force.
Protecting the Servomotor and mechanical system from excessive force or torque.
The Warning Output Selection (Pn09) can be set to output an alarm to the Warning Output
(WARN) when the torque limit function is enabled.
Two torque limits can be set and you can switch between them. To switch the torque limit setting,
enable the Torque Limit Switch Input (TLSEL) in the Zero Speed Designation/Torque Limit Switch
(Pn06).
Parameters Requiring Setting
*1. Values exceeding the default setting cannot be set. The default setting depends on the combination of the
Servomotor and Servo Drive.
*2. The Overspeed Detection Level Setting (Pn70) will function only when torque limit switching function is enabled.
Related Parameters
The following parameters must be set to use torque limit switching function.
*1. Values exceeding the default setting cannot be set. The default setting depends on the combination of Servomotor
and Servo Drive.
*2. The No. 2 Overspeed Detection Level Setting (Pn73) will function only when torque limit switching function is
enabled.
Parameter
No.
Parameter name Explanation Reference
Pn5E Torque Limit
*1
Set the torque limit as a percentage of the maximum torque of the
Servomotor.
Page 5-54
Pn63
Deviation Counter
Overflow Level
Set the alarm detection level for deviation counter overflow.
Page 5-56
Pn70
Overspeed
Detection Level
Setting
*2
An overspeed alarm will occur if the Servomotor rotation speed
exceeds the setting of this parameter. Page 5-60
Parameter
No.
Parameter name Explanation Reference
Pn71 No. 2 Torque Limit
*1
These parameters are set when using the No. 2 torque limit.
These parameters function in the same way as the parameters
described above.
Page 5-60
Pn72
No. 2 Deviation
Counter Overflow
Level
Pn73
No. 2 Overspeed
Detection Level
Setting
*2
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