YASKAWA JUSP-MD D01A Series User Manual page 115

(2) Overtravel Function Setting
Parameters Pn50A and Pn50B can be set to enable or disable the overtravel function.
If the overtravel function is not used, no wiring for overtravel input signals will be required.
Parameter
n.2
[Factory setting]
Pn50A
n.8
n.3
[Factory setting]
Pn50B
n.8
A parameter can be used to re-allocate input connector number for the P-OT and N-OT signals. Refer to
Input Signal Allocations
(3) Servomotor Stopping Method When Overtravel is Used
There are three servomotor stopping methods when an overtravel is used.
• Dynamic brake
By short-circuiting the electric circuits, the servomotor comes to a quick stop.
• Decelerate to a stop
Stops by using emergency stop torque.
• Coast to a stop
Stops naturally, with no control, by using the friction resistance of the servomotor in operation.
After servomotor stopping, there are two modes.
• Coast mode
Stopped naturally, with no control, by using the friction resistance of the servomotor in operation.
• Zero clamp mode
A mode forms a position loop by using the position reference zero.
The servomotor stopping method when an overtravel (P-OT, N-OT) signal is input while the servomotor is
operating can be set with parameter Pn001.
Parameter
n.00
[Factory setting]
*
n.01
Pn001
n.02
n.1
n.2
∗
Always connect a dynamic brake circuit for these settings.
• A servomotor under torque control cannot be decelerated to a stop. The servomotor is stopped with the
dynamic braking (DB) or coasts to a stop according to the setting of Pn001.0. After the servomotor stops,
the servomotor will enter a coast state.
• For details on servomotor stopping methods after the /S-ON (Servo ON) signal turns OFF or an alarm
occurs, refer to 5.2.5 Stopping Servomotors after /S-ON Turned OFF or Alarm Occurrence.
Meaning
Inputs the Forward Run Prohibited (P-OT) signal from
CN1-42.
Disables the Forward Run Prohibited (P-OT) signal.
Allows constant forward rotation.
Inputs the Reverse Run Prohibited (N-OT) signal from
CN1-43.
Disables the Reverse Run Prohibited (N-OT) signal.
Allows constant reverse rotation.
for details.
Stop Method
DB
Coast
Deceleration to a stop
After restart
Mode After
When Enabled Classification
Stopping
DB
Coast
After restart
Zero clamp
Coast
5.2 Basic Functions Settings
When
Classification
Enabled
Setup
3.4.1
Setup
5
5-7