Omron OMNUC G5 R88M-K series User Manual page 407

Emergency Stop Operation
Speed
[r/min]
Speed
deemed
as stop
[30 r/min]
Alarm
Torque limit
Overspeed
protection
threshold
Normal operation
(Command from the Host)
Precautions for Correct Use
 As the prevention of overrun at an emergency stop, set the allowable overspeed level on the
Overspeed Detection Level Setting at Emergency Stop (Pn615). The Overspeed 2 (Alarm
No.26.1) is the alarm that does not support emergency stop. If it occurs, error trip occurs
immediately.
 Set a higher value on the Overspeed Detection Level Setting at Emergency Stop (Pn615) than
one on the Overspeed Detection Level Setting (Pn513). Otherwise, the Overspeed 2 (Alarm
No.26.1) occurs earlier than the Overspeed (Alarm No.26.0). Thus an emergency stop does not
happen. If the Overspeed (Alarm No.26.0) and the Overspeed 2 (Alarm No.26.1) occur at the
same time, the emergency stop does not happen, either.
 If the actual rotation speed is not lower than 30 r/min after the time set on the Alarm Detection
Allowable Time Setting (Pn614) elapses since an alarm that support an emergency stop occurs,
it will be an alarming state immediately.
 If an alarm which is not supported by emergency stop operation occurs while in emergency stop,
Alarming state occurs immediately.
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
Speed
command
Alarm not occurred
Normal torque limit
Normal operation
Motor speed
An alarm that needs an emergency stop occurred
Normal torque limit
Emergency Stop Torque (Pn511)
(a measure to absorb the shock due to the emergency stop)
Normal operation
Overspeed Detection Level Setting at Emergency Stop (Pn615)
(overrun prevention at an emergency stop)
Alarming state (Operation after the stop:
Emergency
Dynamic brake or Free-run)
stop operation
Emergency stop time
11-3 Alarms
Time
11
11-14