Voltage Control And Trip Limits - ABB ACS280 Firmware Manual

70 Program features
Implementing the undervoltage control (power loss ride-through)
Implement the undervoltage control function as follows:
• Check that the undervoltage control function of the drive is enabled with
30.31 Undervoltage control
parameter
21.01 Start mode
• Parameter
21.19 Scalar start mode
parameter
flying start (starting into a rotating motor) possible.
If the installation is equipped with a main contactor, prevent its tripping at the
input power break. For example, use a time delay relay (hold) in the contactor
control circuit.
WARNING! Make sure that the flying restart of the motor will not cause
any danger. If you are in doubt, do not implement the undervoltage
control function.


Voltage control and trip limits

The control and trip limits of the intermediate DC voltage regulator are relative
to the supply voltage as well as drive/inverter type. The DC voltage (
approximately 1.41 times the line-to-line supply voltage, and is displayed by
01.11 DC voltage
parameter
The following table shows the values of the selected DC voltage levels in volts.
Note that the absolute voltages vary according to drive/inverter type and AC
supply voltage range.
When adaptive voltage limit is enabled in parameter
DC voltage level [V]
95.01 Supply voltage
See
Overvoltage fault limit
Overvoltage control limit
Internal brake chopper
start limit
Internal brake chopper
stop limit
Overvoltage warning limit
Undervoltage warning
limit
must be set to
.
AC supply voltage
. range [V]
208...240
421
389
389
379
372
0.85×1.41× par
1)
95.03
value
0.85×1.41×208
2)
= 249
.
Automatic
Automatic
to (in scalar mode) to make
95.02
95.01 Supply Voltage
AC supply voltage
range [V] voltage range [V]
380...415
842
779
760
745
745
0.85×1.41× par 0.85×1.41×par
1)
95.03 95.03
value
0.85×1.41×380 0.85×1.41×440
2)
= 455
(in vector mode) or
U
) is
DC
:
AC supply
Automatic /
not used
440...480
842 842
779 779
760 760
745 745
745 745
0.85×1.41× par
1)
95.03
value value
2)
= 527
1)