WEG CFW-11 Programming Manual page 173

Back" (t4) level, defined at the parameter P0323. The motor will reaccelerate, following the adjusted ramp, from the
actual speed value to the value defined by the speed reference (P0001) (refer to the
U
d
Nominal
Return (P0323)
Loss (P0321)
Ride-Through (P0322)
Undervoltage (75 %)
Figure 12.8 - Ride-Through function actuation in vector mode
t0 – Line loss.
t1 – Line loss detection.
t2 – Undervoltage actuation (F021 without Ride-Through).
t3 – Line return.
t4 – Line return detection.
t5 – Undervoltage actuation (F021 with Ride-Through).
If the line voltage produces an U
may occur, the values of P0321, P0322 and P0323 must be readjusted.
NOTE!
When one of the functions, Ride-Through or Flying Start, is activated, the parameter P0357 (Line
Phase Loss Time) is ignored, regardless of the adjusted time.
NOTE!
Cautions with the application:
All the drive system components must be dimensioned to withstand the application transitory
conditions.
NOTE!
The Ride-Through function activation occurs when the power supply voltage is lower than the value
(P0321/1.35).
U =VAC x 1.35
d
Functions Common to All the Control Modes
t0 t1 t2
voltage between the values adjusted in P0322 and P0323, the fault F0150
d
Figure 12.8 on page
F021
t
(t)
t3 t4 t5
12-17).
12
12-17