YASKAWA Σ-V Series User Manual page 94

(3) 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.1
Pn50A
n.8
n.
2
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.
(4) Motor Stopping Method When Overtravel is Used
There are three linear servomotor stopping methods when an overtravel is used.
• Stop by dynamic brake
By short-circuiting the electric circuits, the linear servomotor comes to a quick stop.
• Decelerate to stop
Stops by using deceleration (braking) force.
• Coast to a stop
Stops naturally, with no control, by using the friction resistance of the linear servomotor in operation.
After stopping, there are two modes.
• Coast mode
Stopped naturally, with no control, by using the friction resistance of the linear servomotor 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 linear servomotor is operat-
ing 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
CN1-7.
[Factory setting]
Disables the Forward Run Prohibited (P-OT) signal.
Allows constant forward movement.
Inputs the Reverse Run Prohibited (N-OT) signal from
CN1-8.
[Factory setting]
Disables the Reverse Run Prohibited (N-OT) signal.
Allows constant reverse movement.
Mode
Stop Mode After
Stopping
Immediately stops the lin-
Stop by
ear servomotor by dynamic
dynamic
braking (DB), then places it
brake
into Coast Mode.
Coast
Stops the linear servomotor
Coast to a
by coast stop, then places it
stop
into Coast Mode.
Decelerates the linear ser-
vomotor with emergency
Zero
stop force (Pn406), then
Clamp
places it into Zero Clamp
Decelerate
(Servolock) Mode.
to stop
Decelerates the linear ser-
vomotor with emergency
Coast
stop force (Pn406), then
places it into Coast Mode.
4.2 Settings for Common Basic Functions
When Enabled Classification
After restart
Meaning When Enabled Classification
After restart
Setup
4
Setup
4-7