7 Before Starting Positioning Operation
112
FX
3U
-20SSC-H Positioning Block User's Manual
7.9 Other functions
7.9.3
Torque limit function
The torque limit function sets the torque limit value for the servo amplifier from the 20SSC-H.
This function can stop the servo motor if the load torque beyond the preset limit value is generated during
positioning operation.
When the servo motor is stopped by the torque limit function, the "Servo status: torque limit reached" flag
remains ON.
→
For the parameters, control data and monitor data, refer to Chapter 11
1. Positioning operation and torque limit value
The torque limit value used in the torque limit value function is as follows in accordance with the positioning
operation status and each torque limit value setting status.
Setting of torque limit value used in each positioning operation
Setting of torque limit value
Positioning operation
Torque output set value
Used torque limit value
Mechanical zero return operation
The system operates at the zero
return speed (creep).
-
Zero return torque limit value
The system operates at the zero
return speed (high speed).
0
Torque limit value
1 to 10000 (
×
0.1%)
Torque output setting value
•
JOG operation
•
1-speed positioning operation
•
Interrupt 1-speed constant
quantity feed
•
2-speed positioning operation
•
Interrupt 2-speed constant
quantity feed
•
Interrupt stop
•
Variable speed operation
•
Multi-speed operation
•
Linear interpolation
•
Linear interpolation (interrupt stop)
•
Circular interpolation
•
Reciprocal movement instruction
(Ver. 1.10 or later)
•
Manual pulse generator operation
(Ver. 1.10 or later)
0
Torque limit value
1 to 10000 (
×
0.1%)
Torque output setting value
BFM Number
Description
X-axis
Y-axis
Zero return torque limit value BFM #14040
BFM #14240
Setting range: 1 to 10000 (
×
0.1%)
Torque limit value
BFM #14038
BFM #14238
Setting range: 1 to 10000 (
×
0.1%)
Torque output setting value
BFM #510
BFM #610
Setting range: 0 to 10000 (
×
0.1%)
