Chapter 4 Running
4.5 Over-travel protections
The security function of over travel protection is refers that when the movement part of the machinery just
exceed the design safe range of motion, the limit switch acts and forces the servomotor to stop. A schematic
diagram showing the over travel protection as follows:
The limit switch suggested using normal closed type. It is close in the safety range and it is open in over
travel range. The limit switch on the right connects to CCW forbid terminal (CCWL) and the limit switch on the
left connects to CW forbid terminal (CWL).
This security function of over travel protection can be set for use or neglect by setting the parameter P097.
The limit signal must be connected for the use, or do not need this signal in case of neglect.
The default value of P097 (for CCWL and CWL) is all neglects. Must modify parameter P097 if needs to
use. Under the over travel condition, use the reverse command to withdraw back from the over travel condition.
P097
Motion inhibition in CW Motion inhibition in CCW
direction(CWL)
direction(CCWL)
0
Use
Use
1
Use
Neglect
2
Neglect
Use
3(Default)
Neglect
Neglect
4.6 Torque limitations
In order to protect the machinery from over-load can carry on the limit to the output torque.
4.6.1 Parameters for torque limitations
The parameters related to torque limit:
Parameter
Name
Default
Range
Unit
value
P065
Internal torque limit in CCW direction 0～300
300
%
P066
Internal torque limit in CW direction -300～0 -300
%
P067
External torque limit in CCW direction 0～300
100
%
P068
External torque limit in CW direction -300～0 -100
%
P069
Torque limit in trial running
0～300
100
%
Usage
ALL
ALL
ALL
ALL
ALL
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