Yaskawa F7 Drive Programming Manual - Manual (Page 72)

Programming 64
F1-09 Overspeed Detection Delay Time
Setting Range: 0.0 to 2.0 seconds
Factory Default: 0.0 seconds
Parameter F1-08 sets the motor overspeed detection level as a percentage of maximum output frequency (E1-04) for the
overspeed fault (OS). Parameter F1-09 sets the elapsed time from when an overspeed condition is detected to when a fault
occurs. See figure below.
.
Fig. 41 Overspeed Detection Timing Diagram
A fault signal is output to stop operation after the absolute value of the motor speed exceeds the set
value of F1-08 and after the time set to F1-09 elapses. The stopping method is set by F1-03.
When parameter A1-02 = 1 (V/f with PG) the factory default setting will be 1.0. When parameter A1-02 = 3 (Flux Vector) the
factory setting will be 0.0.
F1-10 Excessive Speed Deviation Detection Level
Setting Range: 0 to 50 %
Factory Default: 10 %
F1-11 Excessive Speed Deviation Detection Delay Time
Setting Range: 0.0 to 10.0 seconds
Factory Default: 0.5 seconds
Parameter F1-10 sets the speed deviation detection level as a percentage of maximum output frequency (E1-04) for the speed
deviation fault (DEV). Parameter F1-11 sets the elapsed time from when an speed deviation condition is detected to when a
fault occurs. See figure below.
Fig. 42 Speed Deviation Detection Timing Diagram
A fault signal is output to stop operation after the deviation between speed reference and the motor speed exceeds the set value
of F1-10 and after the time set to F1-11 elapses. The stopping method is set by F1-04. Also, detection is not activated while
accelerating/decelerating or during torque control.
Overspeed Level (F1-08)
OFF ON
| Motor Speed |
F1-09
Overspeed Fault Signal
0
Speed Reference
OFF ON
Motor Speed
F1-10
Speed Deviation
Fault Signal
F1-11
OFF