6.2 Torque Limiting Function
6-5
6
Function/Command Related Parameter
s
6.2
Torque Limiting Function
The torque limiting function limits the torque during position/speed control to protect the con-
nected machine, etc. There are three ways to limit the output torque.
•
Internal torque limit according to parameter settings
•
External torque limit using the P_CL and N_CL bits of the SVCMD_IO field
•
Torque limit by position/speed control command
If all of the above three methods are used, the smallest torque limit will be applied.
Internal Torque Limit
This method always limits the maximum output torque to the set values of the following param-
eters.
External Torque Limit Using P_CL/N_CL Bits of SVCMD_IO
Field
This method uses the P_CL and N_CL bits of the SVCMD_IO field to limit the output torque to
the values set for the following parameters. Settings can be made using common parameters.
Parameter
Name
Data Size
(Byte)
Setting
Range
Unit
Factory
Setting
Pn402
Forward Torque Limit
(For rotational servomotors)
2
0 to 800
%
800
Pn403
Reverse Torque Limit
(For rotational servomotors)
2
0 to 800
%
800
Pn483
Forward Force Limit
(For linear servomotors)
2
0 to 800
%
30
Pn484
Reverse Force Limit
(For linear servomotors)
2
0 to 800
%
30
Common
Parameters
Name
Data Size
(Byte)
Setting
Range
Unit
Factory
Setting
8C
Forward Torque Limit
4
0 to 800
%
100
8D
Reverse Torque Limit
4
0 to 800
%
100
Parameter
Name
Data Size
(Byte)
Setting
Range
Unit
Factory
Setting
Pn404
Forward External Torque Limit
2
0 to 800
%
100
Pn405
Reverse External Torque Limit
2
0 to 800
%
100
