P0202=4; V/F Ride-Through - WEG CFW-11 Programming Manual

Description:
It defines the rate of frequency variation used in the motor speed search.
P0329 is determined in function of P0404, as showed in the next table:
P0404
P0329
P0404
P0329
The frequency variation rate is determined by: (P0329 x P0412).
If it is wished to deactivate momentarily the Flying Start function, one can program one of the digital
inputs P0263 to P0270 as 24 (Disab.FlyStart). Refer to the section 13.1.3.

12.7.2.2 P0202=4

During the time period when the motor is being magnetized, the identification of the motor speed occurs. Once
the magnetization is finished, the motor will be operated starting from that speed until reaching the speed
reference indicated in P0001.
The parameters P0327 to P0329, P0331 and P0332 are not used.

12.7.3 V/f Ride-through

The Ride-Through function in the V/f mode will disable the output pulses (IGBT) of the inverter as soon as the
input voltage reaches a value below the undervoltage level. The undervoltage fault (F021) does not occur and
the DC link voltage will decrease slowly until the line voltage returns.
If the line takes too long to return (more than 2 seconds), the inverter may indicate F021 (DC Link Undervoltage).
If the line voltage returns before a fault, the inverter will enable the pulses again, imposing the speed reference
instantaneously (as in the Flying Start function) and applying a voltage ramp with the time defined by P0331.
Refer to the figures 12.6(a) and (b).
Table 12.6 - P0329 value in function of P0404
0...20 21...23 24...26
6.0 7.0
38...40 41...44 45...48
12.0 13.0
Functions Common to All the Control Modes
27...29 30...32
8.0 9.0 10.0
49
14.0 15.0 16.0
33...37
11.0
50 51...58
17.0
12-13
12