WEG CFW700, Programming And Troubleshooting Manual

Page: 105 / 223

Vector Control
11
CFW700 | 11-27
P0185 – DC Link Voltage Regulation Level
Adjustable
Range:
339 to 400 V
585 to 800 V
585 to 800 V
585 to 800 V
585 to 800 V
Factory
Setting:
P0296=0: 400 V
P0296=1: 800 V
P0296=2: 800 V
P0296=3: 800 V
P0296=4: 800 V
Properties: Vector
Access groups
via HMI:
Description:
This parameter defines the DC link voltage regulation level during the braking. During the braking, the time of
the deceleration ramp is automatically extended, thus avoiding an overvoltage fault (F022). The setting of the
DC link regulation can be done in two manners:
1. With losses (Optimal Braking) – set P0184=0.
1.1. P0404 < 20 (60 hp): In this way the current flux is modulated in a way to increase the losses of the motor,
increasing the break torque. A better operation can be obtained with motors of smaller efficiency (small
motors).
1.2. P0404 > 20 (60 hp): the current flux will be increased up to the maximum value defined on P0169 or
P0170, as the speed is reduced. The break torque in the weakness field area is small.
2. Without losses – set P0184=1. Activates only the DC link voltage regulation.
NOTE!
The factory setting for P0185 is adjusted at the maximum, which disables the DC link voltage
regulation. In order to activate it, set P0185 according to the
table 11.8 .
Table 11.8: DC link voltage regulation recommended levels
Inverter
V
nom
200 ... 240 V 380 V 400 / 415 V 440 / 460 V 480 V
P0296 0 1 2 3 4
P0185 375 V 618 V 675 V 748 V 780 V
P0186 – DC Link Voltage Regulation Proportional Gain
Adjustable
Range:
0.0 to 63.9 Factory
Setting:
18.0
P0187 – DC Link Voltage Regulation Integral Gain
Adjustable
Range:
0.000 to 9.999 Factory
Setting:
0.002
Properties:
Vector
Access groups
via HMI:
Description:
These parameters adjust the DC link voltage regulator gain.
Normally the factory settings are adequate for the majority of the applications, not being necessary to adjust them.