Omron OMNUC G5 Series User Manual page 247

POT or NOT opens.
Precautions for Correct Use
At an immediate stop, an Error Counter Overflow (Error No. 24.0) or an Overrun Limit Error (Error
No. 34.0) may occur. This is because the immediate stop forces the motor to decelerate quickly,
and the position control creates a large position error momentarily. If an error occurs, set the
Following error window (6065 hex) and the Overrun Limit Setting (3514 hex) to appropriate values.
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 deceleration with the immediate stop torque and
stopping with a servo lock (set value: 2) in the Stop Selection for Drive Prohibition Input (3505
hex), or limit the operation using the Host Controller rather than using this function.
A Command Warning (Warning No. B1 hex) will occur if a command is given in the drive
prohibition direction while the Servomotor is stopped (i.e., decreases the speed to 30 r/min or
lower) and the Drive Prohibition Input is open.
Reference
While the Forward Drive Prohibition Input (POT) is open, 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 open, the Servomotor cannot be driven in the reverse
direction, but it can be driven in the forward direction.
Immediate Stop Torque (3511 Hex)
This is the torque limit when the Stop Selection for Drive Prohibition Input (3505 hex) is set to
2, and the Servomotor decelerates due to a drive prohibition input.
The settable range is 0 to 500% in units of 0.1%. When it is set to 0%, the normal torque limit
is used.
OMNUC G5-series AC Servomotors and Servo Drives User's Manual (with Built-in EtherCAT Communications)
7-2 Forward and Reverse Drive Prohibition Functions
Stop Selection for Drive
Prohibition Input (3505 hex)
Decelerate with dynamic brake
0
1
Decelerate in the free-run status
2
Stop with Immediate Stop
Torque (3511 hex)
Deceleration method Stop status
Servo free
Servo locked
7
7-8