YASKAWA SGMJV User Manual page 114
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(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
Pn50A
n.8
n.
3
Pn50B
n.
8
• A parameter can be used to re-allocate input connector number for the P-OT and N-OT signals. Refer to
3.3.1 Input Signal Allocations.
(3) Motor Stopping Method When Overtravel is Used
There are three motor stopping methods when an overtravel is used.
• Dynamic brake
By short-circuiting the electric circuits, the servomotor comes to a quick stop.
• Decelerate to stop
Stops by using deceleration (braking) torque.
• Coast to a stop
Stops naturally, with no control, by using the friction resistance of the motor in operation.
After stopping, there are two modes.
• Coast mode
Stopped naturally, with no control, by using the friction resistance of the motor in operation.
• Zero clamp mode
A mode forms a position loop by using the position reference zero.
The 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
n.
01
n.
02
Pn001
n.
1
n.
2
Meaning
Inputs the Forward Run Prohibited (P-OT) signal from
CN1-42.
[Factory setting]
Disables the Forward Run Prohibited (P-OT) signal.
Allows constant forward rotation.
Inputs the Reverse Run Prohibited (N-OT) signal from
CN1-43.
[Factory setting]
Disables the Reverse Run Prohibited (N-OT) signal.
Allows constant reverse rotation.
Mode
Stop Mode
After
Stopping
Immediately stops the ser-
Stop by
vomotor by dynamic brak-
dynamic
ing (DB), then places it into
brake
Coast Mode.
Coast
Stops the servomotor by
Coast to a
coast stop, then places it
stop
into Coast Mode.
Decelerates the servomotor
with emergency stop torque
Zero
(Pn406), then places it into
Clamp
Zero Clamp (Servolock)
Decelerate
Mode.
to stop
Decelerates the servomotor
with emergency stop torque
Coast
(Pn406), then places it into
Coast Mode.
5.2 Setting Common Basic Functions
When Enabled Classification
After restart
Meaning
When Enabled Classification
After restart
Setup
5
Setup
5-7
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