Veikong gpd 515/g5 Startup Manual page 108

5.15 ENCODER (PG) PARAMETERS
C . F 1 - 0 8 : Overspeed Detection Level
F 1 - 0 9 : Overspeed Detection Delay Time
F 1 - 0 3 : Operation Selection at
Overspeed
Parameters F 1 - 0 8 and F 1 - 0 9 work together to determine when an overspeed ( o S )
fault will occur. Parameter F 1 - 0 8 sets the desired overspeed level as a percentage of
the maximum output frequency ( E 1 - 0 4 ), and F 1 - 0 9 determines how long the
overspeed condition will be allowed to exist before a fault will occur. Parameter F 1 - 0 3
determines the stopping method when an overspeed fault ( o S ) occurs.
EXAMPLE:
A given application requires that if motor speed were to ever reach 1980 RPM,
an overspeed fault would occur and the motor should coast to stop. The motor
has 4 poles, and maximum frequency ( E 1 - 0 4 ) = 60Hz.
F 1 - 0 8 = Desired Overspeed Level x Number of Motor Poles x 100%
F 1 - 0 8 =
F 1 - 0 3 = 1
Only available in the V/f w/PG and Flux Vector Control Methods
( A 1 - 0 2 = 1 or 3).
120 x Maximum Frequency
1980 x 4 x 100% = 1 1 0 %
120 x 60
Coast to Stop
Continued
Factory setting: 1 1 5
Range: 0 to 120 %
Factory setting: See Table A3-2
Range: 0.0 to 2.0 seconds
Factory setting: 1
Range: 0 : Ramp to Stop
( E 2 - 0 4 )
( E 1 - 0 4 )
NOTE
5-22
1 : Coast to Stop
2 : Fast-stop
3 : Alarm Only