Omron ACCURAX G5 User Manual page 344

6-11 Forward and Reverse Drive Prohibition Functions
Drive Prohibition Input Selection (Pn504)
Install limit switches at both ends of the axis to prohibit the Servomotor from driving in the direction specified
by the switch. This can be used to prevent the workpiece from driving too far and thus prevent damage to
the machine. Set the operation to be performed upon forward and reverse drive prohibition input.
Prohibition
Input Selection
0
1
6
2
Stop Selection for Drive Prohibition Input (Pn505)
Set the deceleration and stop methods upon a forward or reverse drive prohibition is input.
Stop Selection for
Drive Prohibition
Input (Pn505)
0
1
2
POT (NOT) is turned OFF.
While the Forward Drive Prohibition Input (POT) is OFF, the Servomotor cannot be driven in
the forward direction, but it can be driven in the reverse direction. Conversely, while the reverse
drive prohibition input (NOT) is OFF, the Servomotor cannot be driven in the reverse direction,
but it can be driven in the forward direction.
If immediate stop torque is set for deceleration and servo lock is set for stop (set value: 2),
torque limit during deceleration will be limited with the set value of the Immediate Stop Torque
(Pn511).
6-44
Drive
(Pn504)
Forward drive prohibition input and reverse drive prohibition input enabled.
The operation when a signal is input will be as follows.
Forward drive prohibition input closed: Forward limit switch not operating and status normal.
Forward drive prohibition input open: Forward direction prohibited and reverse direction permitted.
Reverse drive prohibition input closed: Reverse limit switch not operating and status normal.
Reverse drive prohibition input open: Reverse direction prohibited and forward direction permitted.
The Servomotor will decelerate and stop according to the sequence set in Stop Selection
for Drive Prohibition Input (Pn505). For details, refer to explanation for Stop Selection for
Drive Prohibition Input (Pn505).
If the forward and the reverse prohibition inputs are both open, an error will be detected in
the driver, and a drive prohibition input error (Err380) will occur.
Forward and reverse drive prohibition input disabled.
Forward and reverse drive prohibition input enabled.
If either the forward or the reverse prohibition input is open, a drive prohibition input error
(Err380) will occur.
Deceleration method
Dynamic brake
Free-run
(Torque command = 0 for drive
prohibition direction)
Immediate stop
Stop Selection for Drive
Prohibition Input (Pn505)
Accurax G5 AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Explanation
After stopping
Torque command = 0 for drive
prohibition direction
Torque command = 0 for drive
prohibition direction
Servo lock
Deceleration method
Decelerate with dynamic brake
0
1
Decelerate in the free-run status
2
Decelerate with Emergency
Stop Torque (Pn511)
Error counter
Held
Held
Clear before and
after deceleration.
Stop status
Servo unlocked
Servo locked