6.11 Selecting Torque Limits
6.11.2 External Torque Limits
6-61
6
Application Function
s
•
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.
6.11.2
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 Limit) and /N-CL (Reverse External Torque Limit) signals
are used as the external torque limit reference signals. The /P-CL signal is used for the forward
torque limit and the /N-CL signal is used for the reverse torque limit.
*1.
Pn483 is used for a Linear Servomotor.
*2.
Pn484 is used for a Linear Servomotor.
Note: You can use the following parameters to allocate the /P-CL and /N-CL signals to other terminals.
•
Pn50B = n.
X
(/P-CL (Forward External Torque Limit Input) Signal Allocation)
•
Pn50B = n.X
(/N-CL (Reverse External Torque Limit Input) Signal Allocation)
Refer to the following section for details.
6.1.1 Input Signal Allocations
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
Speed
Position
Force
Speed
Position
Force
t
Pn484
Pn48
3
t
Without Internal Torque Limit
s
(Output to the maximum force i
s
po
ss
ible.)
S
peed
With Internal Force Limit
s
Maximum force
S
peed
Force limit
Type
Signal
Connector Pin No.
Signal Status
Meaning
Input
/P-CL
CN1-45
(default setting)
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
CN1-46
(default setting)
ON (closed)
Applies the reverse external torque limit.
The torque is limited to the smaller of the set-
tings of Pn403
*2
and Pn405.
OFF (open)
Cancels the reverse external torque limit.
The torque is limited to the setting of Pn403
*2
.
