Dc Bus Reference; Example; Reactive Power - ABB ACS 600 User Manual

Chapter 8 – Parameters

23 DC Bus Reference

Example

Code Parameter
23 DC VOLT REF
23.01 DC VOLT REF

24 Reactive Power

Code Parameter
24 REACTIVE
POWER
24.01 Q POWER REF
8-18
With the help of the Parameter 23.01 DC VOLT REF, the DC link
voltage can be raised higher than with a conventional 6-pulse diode
rectifier in order to compensate a low voltage level in the network.
Note: Check the motor insulation requirement. See
ACS 600 MultiDrive Safety and Product Information guide, EN code
63982229, or ACS/ACC 6x7 Hardware Manual, EN code 61329005.
If the line voltage is 380 V, fully loaded DC voltage with 6-pulse diode
rectifier is 1.35 × 380 V = 513 V. If the desired motor rms level is 400 V
with sinusoidal voltage (peak value = Ö 2 × 400 V = 565 V), the voltage
drop can be compensated simply by setting Parameter 23.01 DC
VOLT REF to value 565. However, the input current to produce the
output power is still calculated on the basis of 380 V: P = Ö 3 × 380 × line
current.
T Range Description
y
p
e
R See table below. User-given setpoint value for intermediate circuit DC voltage
reference
Par. 4.04 CONV NOM
VOLTAGE
(V)
415
500
690
T Default Range
y
p
e
0% -100%...+100%
R
Range of Par. 23.01:
(65% ...120%) × Ö2 × Par. 4.04 CONV
NOM VOLTAGE
Minimum (V) Maximum (V)
380
457
632
Description
Setpoint value for reactive power control in
percentage of Par. 4.06 CONV NOM POWER.
Reactive power control is capable of generating
the set amount of reactive power to the network
(positive = capacitive, negative = reactive).
706
851
1174
ACA 635 IGBT Supply Sections
Integer
Scaling
1 = 1 V
Integer
Scaling
1 = 1 %