Omron G5 Series User Manual page 322

6 Applied Functions
Stop Selection for Drive Prohibition Input (Pn505)
Set the deceleration and stop methods used when the Forward/Reverse Drive Prohibition Input signal
turns ON.
Stop
Selection for
Drive
Prohibition
Input (Pn505)
0
1
2
POT (NOT) is 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 you set the Servomotor to decelerate at the immediate stop torque and stop with servo locked (set
value: 2), the torque limit during deceleration will be limited by the value set in Immediate Stop Torque
(Pn511).
Precautions for Correct Use Precautions for Correct Use
• A load on the vertical axis and so forth may fall due to its own weight when the Drive
Prohibition Input is ON. To prevent this, set the Servomotor to decelerate at the immediate
stop torque and stop with servo locked (set value: 2) in the Stop Selection for Drive Prohibition
Input (Pn505), or limit the operation using the host controller instead of this function.
• Because an immediate stop causes the motor to decelerate quickly, in the position control
mode, the position error may become large momentarily, resulting in a Error Counter Overflow
(Alarm No. 24.0) or Overrun Limit Error (Alarm No. 34.0). To prevent this, set Error Counter
Overflow Level (Pn014) and Overrun Limit Setting (Pn514) to appropriate values.
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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
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User's Manual
After stopping
Torque command = 0 for drive
prohibition direction
Torque command = 0 for drive
prohibition direction
Servo lock
Deceleration method
Decelerate with dynamic brake
Decelerate in the free-run status
Decelerate with Immediate
Stop Torque (Pn511)
Error counter
Held
Held
Cleared before and
after deceleration
Stop status
Servo unlocked
Servo locked