8-52
8-6 Extended Parameters
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
8
Parameter Details
Immediate Stop Operation when an Alarm that Supports Immediate Stop is Generated
If the actual speed is not 30 r/min or less after the time set by the Alarm Detection Allowable Time Setting
(Pn614) elapses, an immediate alarm status will occur. In addition, if an alarm that does not support
immediate stop occurs inside the drive at immediate stop, an immediate alarm status will occur.
Set the allowable overspeed level to Pn615, "Overspeed Detection Level Setting at Immediate
Stop," as a protective measure against runaway at an immediate stop. Alarm 26.1, "overspeed 2,"
if it occurs, will cause an immediate alarm trip because it is an alarm that does not support
immediate stop. However, if the setting is below Pn513, "Overspeed Detection Level Setting," an
immediate stop will not take place because Alarm 26.1, "overspeed 2," will occur before Alarm
26.0, "overspeed."
In addition, if Alarm 26.0 and Alarm 26.1 are detected at the same time, Alarm 26.0 will be
displayed. However, an immediate stop will not take place because Alarm 26.1 has also occurred
internally.
Set the torque limit for the following cases.
·
Drive prohibition deceleration with the Stop Selection for Drive Prohibition Input (Pn505) set to 2.
· Deceleration with the Stop Selection with Main Power Supply OFF (Pn507) set to 8 or 9.
· Deceleration with the Stop Selection with Servo OFF (Pn506) set to 8 or 9.
The normal torque limit will be used if this parameter is set to 0.
This object is set in units of 0.1% of the rated torque.
Torque limit
Speed
[r/mn]
Time
Alarm status (Operation after the stop:
Dynamic brake/free-run)
Immediate stop
undefined
Normal operation (command from the host)
Speed command
Motor speed
Normal torque limitNormal torque limit
An alarm that supports
immediate stop is generated.
No alarm generation
Alarm
Speed
deemed
as stop
(30 r/min)
Immediate stop time
Overspeed protection
threshold
Normal operationNormal operation
Pn615 Overspeed Detection Level Setting at Immediate Stop
(Protection from runaway at an immediate stop)
Set the Overspeed Detection Level Setting
at Immediate Stop (Pn615) to the Overspeed
Detection Level Setting (Pn513) or higher.
Pn511 immediate Stop Torque
(Measure to lessen the impact at an immediate stop)
Pn511
Immediate Stop Torque
Setting
range
0 to 500 Unit %
Default
setting
0
Power OFF
and ON
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