Omron G5 Series User Manual page 381

Immediate Stop Operation when an Alarm that Supports Immediate Stop
Occurred
Speed
[r/min]
Speed at which Servomotor
is judged as stopped
(30 r/min)
Alarm
Torque Limit
Overspeed
protection
threshold
Normal operation (command from host)
• If the actual rotation speed is not lower than 30 r/min even when the time set in Alarm Detection
Allowable Time Setting (Pn614) has elapsed, an alarm state will occur immediately. In addition, if an
alarm that does not support the immediate stop function occurs in the Servo Drive during an
immediate stop, an alarm state will occur immediately.
• To prevent the Servomotor from running out of control during an immediate stop, set an allowable
overspeed level in Overspeed Detection Level Setting at Immediate Stop (Pn615). An Overspeed 2
alarm (Alarm No. 26.1) does not support the immediate stop function and, if it occurs, causes an
alarm trip. However, if this allowable level is lower than the value set in Overspeed Detection Level
Setting (Pn513), the Servomotor does not stop immediately because the Overspeed 2 alarm (Alarm
No. 26.1) occurs before the Overspeed alarm (Alarm No. 26.0).
The Servomotor also does not stop immediately if Alarm No. 26.0 and Alarm No. 26.1 are detected
simultaneously because, even though Alarm No. 26.0 is indicated, Alarm No. 26.1 is also generated
internally.
Pn511 Immediate Stop Torque
Setting 0 to 500
range
• Set the torque limit for the following cases.
• During deceleration with Stop Selection for Drive Prohibition Input (Pn505) set to 2
• During deceleration with Stop Selection with Main Power Supply OFF (Pn507) set to 8 or 9
• During deceleration with Stop Selection with Servo OFF (Pn506) set to 8 or 9
• The normal torque limit is used if this parameter is set to 0.
• The unit is 0.1% of the rated torque.
OMNUC G5-series (Pulse-train Input Type) AC Servomotors and Servo Drives User's Manual
Speed command
No alarm generation
Normal torque limit
For normal operation
Unit %
7 Parameter Details
Motor speed
An alarm that supports
immediate stop occurred
Normal torque limit
Immediate Stop Torque (Pn511)
(Shock mitigation during immediate stop)
For normal operation
Overspeed Detection Level Setting at Immediate Stop
(Pn615) (Protection from runaway at immediate stop)
Set Overspeed Detection Level Setting at
Immediate Stop (Pn615) to a value equal to or
greater than the value set in Overspeed Detection
Level Setting (Pn513).
Alarm state (Action after stopping:
Immediate
Dynamic brake or free-run)
stop operation
Immediate stop time
Default 0
setting
Time
All
Cycle the –
power supply
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