Omron R88M-K Series User Manual page 413

Stop Selection for Drive Prohibition Input (Pn505)
Set the deceleration and stop methods upon a forward or reverse drive prohibition 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).
Precautions for Correct Use
 A load on the vertical axis and so forth may fall due to its own weight in the drive prohibition input
state. To prevent the load from falling, set emergency stop torque for deceleration and servo lock
for stop (set value: 2) in Stop Selection for Drive Prohibition Input (Pn505), or limit the operation
using the Host Controller rather than using this function.
 Because an immediate stop will force the motor to decelerate quickly, the position error will
momentarily be a large value during position control, and Alarm 24.0 "error counter overflow" or
Alarm 34.0 "overrun limit error" may occur.In such a case, set the Position Counter Overflow Level
(Pn014) and the Overrun Limit Setting (Pn514) to appropriate values.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
6-10 Forward and Reverse Drive Prohibition Functions
Deceleration method
Dynamic brake
Free-run
(Torque command = 0 for drive
prohibition direction)
Immediate stop
Stop Selection for Drive
Prohibition Input (Pn505)
0
1
2
After stopping
Torque command in drive-
prohibited direction = 0
Torque command in drive-
prohibited direction = 0
Servo lock
Deceleration method
Decelerate with dynamic brake
Decelerate in the free-run status
Decelerate with Immediate
Stop Torque (Pn511)
Error counter
Held
Held
Clear before and
after deceleration.
Stop status
Servo unlocked
Servo locked
6
6-43