5.23 Selecting the Torque Limits
5.23.2 External Torque Limits
5-70
•
Linear Servomotors
*
Set a percentage of the rated motor force.
Note: If the setting of Pn483 or Pn484 is too low, the force may be insufficient for acceleration or deceleration of the
Servomotor.
5.23.2
External Torque Limits
You can limit the torque only when required by the operating conditions of the machine by turn-
ing a signal ON and OFF.
You can use this for applications such as stopping on physical contact, or holding a workpiece
with a robot.
External Torque Limit Reference Signals
The /P-CL (Forward External Torque/Force Limit Input) and /N-CL (Reverse External Torque/
Force Limit Input) signals are used as the external torque limit reference signals. The /P-CL sig-
nal is used for the forward torque/force limit and the /N-CL signal is used for the reverse
torque/force limit.
*1.
Pn483 is used for a Linear Servomotor.
*2.
Pn484 is used for a Linear Servomotor.
Pn483
Forward Force Limit
Setting Range
Setting Unit
Default Setting
When Enabled
Classification
0 to 800
1%
*
30
Immediately
Setup
Pn484
Reverse Force Limit
Setting Range
Setting Unit
Default Setting
When Enabled
Classification
0 to 800
1%
*
30
Immediately
Setup
S
peed
Po
s
ition
Force
S
peed
Po
s
ition
Force
S
peed
t
S
peed
Pn484
Pn48
3
t
With Internal Force Limit
s
Without Internal Force Limit
s
(Output to the maximum force i
s
po
ss
ible.)
Force limit
Maximum force
Type
Signal
Connector Pin No.
Signal Status
Meaning
Input
/P-CL
Must be allocated.
ON (closed)
Applies the forward external torque limit.
The torque is limited to the smaller of the set-
tings of Pn402
*1
and Pn404.
OFF (open)
Cancels the forward external torque limit.
The torque is limited to the setting of Pn402
*1
.
Input
/N-CL
Must be allocated.
ON (closed)
Applies the reverse external torque limit.
The torque is limited to the smaller of the set-
tings of Pn403
*2
and Pn404.
OFF (open)
Cancels the reverse external torque limit.
The torque is limited to the setting of Pn403
*2
.
