Omron R88D-KN series User Manual page 380

12 Troubleshooting and Maintenance
Immediate Stop Operation
Speed
[mm/s]
Speed
deemed
as stop
[30 mm/s]
Error
Force limit
Overspeed
protection
threshold
Precautions for Correct Use Precautions for Correct Use
• To prevent operation from running out of control for an immediate stop, set the allowable
Overspeed Detection Level Setting at Immediate Stop (3615 hex). An Overspeed 2 Error
(Error No. 26.1) does not support immediate stopping. If it occurs, an error trip will occur
immediately.
• Set a higher value for the Overspeed Detection Level Setting at Immediate Stop (3615 hex)
than for the Overspeed Detection Level Setting (3513 hex). If a value lower than the
Overspeed Detection Level Setting (3513 hex) is set, an Overspeed 2 Error (Error No. 26.1)
will occur before an Overspeed Error (Error No. 26.0). Thus an immediate stop will not occur.
If an Overspeed Error (Error No. 26.0) and an Overspeed 2 error (Error No. 26.1) occur at the
same time, the immediate stop will not occur, either.
• If the actual operation speed is not lower than 30 mm/s after the time set on the Error
Detection Allowable Time Setting (3614 hex) elapses from when an error that supports
immediate stopping occurs, an error state will occur immediately.
• If an error that does not support immediate stopping occurs during an immediate stop, an error
state will occur immediately.
12-10
Speed
command
No error
Normal force limit
Normal operation
Normal operation
(Command from the Host)
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
Motor speed
Error occurs for immediate stop
Normal force limit
Immediate Stop Force (3511 hex)
(measure to reduce shock for immediate stops)
Normal operation
Overspeed Detection Level Setting at Immediate Stop
(3615 hex) (to protect again runaway for immediate stops)
Error state (Operation after stopping:
Immediate
Dynamic brake/free)
stop operation
Immediate stop time
Time