Omron OMNUC G5 R88M-K series User Manual page 237

POT (NOT) is turned OFF.
Precautions for Correct Use
 At an emergency stop, an Error counter overflow (Alarm No.24.0) or an Overrun limit error (Alarm
No.34.0) may occur. This is because the emergency stop forces the motor to decelerate quickly,
and the position control produces a large positional deviation momentary. If the error occurs, set
the Error Counter Overflow Level (Pn014) and the Overrun Limit Setting (Pn514) in 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 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.
 A command warning (Warning No. 95) occurs, if a command is given to the drive prohibition
direction while the Servomotor stops (when decelerated to 30 r/min or lower) and the Drive
Prohibition Input is ON.
Reference
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.
Emergency Stop Torque (Pn511)
This is the torque limit when the Stop Selection for Drive Prohibition Input (Pn505) is set to 2,
and the Servomotor decelerates due to a drive prohibition input.
The settable range is 0 to 500%. When it is set to 0%, the normal torque limit is used.
MECHATROLINK-II Communications I/O Monitor Setting (Pn710)
Select whether to reflect the input to the MECHATROLINK-II communications I/O monitor,
when either the Forward Drive Prohibition Input or the Reverse Drive Prohibition Input is
allocated to the input signal, and the Drive Prohibition Input Selection (Pn504) is set to 1 (i.e.,
disabled).
Ph710 set value
0
1
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
6-2 Forward and Reverse Drive Prohibition Functions
Stop Selection for Drive
Prohibition Input (Pn505)
Decelerate with dynamic brake
0
1
Decelerate in the free-run status
2
Decelerate with
Emergency Stop Torque (Pn511)
Disable the MECHATROLINK-II communications I/O monitor also.
Enable the MECHATROLINK-II communications I/O monitor.
Deceleration method
Description
Stop status
Servo free
Servo locked
6
6-8