226 Actual signals and parameters
2020 BRAKE
CHOPPER
Selects the brake chopper control.
When using the drive in a Common DC bus system, the
parameter must be set to
. When in Common
DC, the drive cannot feed or receive more power than
P
N
.
INBUILT
Internal brake chopper control.
Note:
Ensure the brake resistor(s) is installed and the
overvoltage control is switched off by setting parameter
to selection
. See also
selection
.
0
EXTERNAL
External brake chopper control.
Note:
The drive is compatible only with ABB
ACS-BRK-X
brake units.
Note:
Ensure the brake unit is installed and the overvoltage
control is switched off by setting parameter
to selection
.
1
2021 MAX SPEED
SEL
Maximum speed source for torque control
PAR 2002
0
EXT REF 1
Value of signal
1
21 START/STOP
Start and stop modes of the motor
2101 START
FUNCTION
Selects the motor starting method.
AUTO
The drive starts the motor instantly from zero frequency if
parameter
setting is
. If flying start is required use selection
.
or
, the drive pre-magnetizes the
motor with DC current before the start. The pre-magnetizing
time is defined by parameter
. See
For permanent magnet synchronous motors, flying start is
used if the motor is rotating.
1
All parameters
No.
Name/Value
Description
Def/FbEq
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...