Veikong gpd 515/g5 Startup Manual page 137

5 . 2 9 M O M E N T A R Y POWER LOSS RIDE-THRU
L 2 - 0 3 : Momentary Power Loss Minimum
Base Block Time
When a power loss is detected, the output is baseblocked for the amount of time set in
L 2 - 0 3 . During this time, residual voltage in the motor is allowed to diminish. This guards
against faults resulting from the drive output turning on while the motor still has residual
voltage.
If the minimum baseblock time ( L 2 - 0 3 ) is greater than the power loss ride-thru time
( L 2 - 0 2 ), drive operation resumes after the minimum baseblock time. If the minimum
baseblock time is less than the power loss ride-thru time, drive operation resumes after
recovery of input power.
L 2 - 0 4 : Momentary Power Loss Recovery
Ramp Time
After recovery from a momentary power loss, the drive performs a speed search. The ramp
recovery time ( L 2 - 0 4 ) is the time is takes the output voltage to return to the preset V/f
pattern.
L 2 - 0 5 : Undervoltage Detection Level
The setting of this parameter determines the DC bus undervoltage trip point. When the
voltage level on the DC bus drops below this value, a UV (undervoltage) fault will occur.
Continued
Factory setting: See Table A3-1
Range: 0.0 to 5.0 seconds
Factory setting: 0 . 3
Range: 0.0 to 2.0 seconds
Factory setting: 1 9 0 (230V ratings)
Range: 150 to 210 VDC (230V ratings)
300 to 420 VDC (460V ratings)
5-51
3 8 0 (460V ratings)