ABB ACS355 series User Manual

246 Actual signals and parameters
2619 DC
STABILIZER
Enables or disables the DC voltage stabilizer. The DC
stabilizer is used to prevent possible voltage oscillations in
the drive DC bus caused by motor load or weak supply
network. In case of voltage variation, the drive tunes the
frequency reference to stabilize the DC bus voltage and
therefore the load torque oscillation.
DISABLE
DISABLE Disabled 0
ENABLE Enabled 1
2621 SMOOTH
START
Selects the forced current vector rotation mode at low
speeds. When the smooth start mode is selected, the rate of
acceleration is limited by the acceleration and deceleration
ramp times (parameters 2202 and 2203). If the process
driven by the permanent magnet synchronous motor has
high inertia, slow ramp times are recommended.
Can be used for permanent magnet synchronous motors
only (see chapter Appendix: Permanent magnet
synchronous motors (PMSMs)).
NO
NO Disabled 0
YES Enabled always when the frequency is below the smooth
start frequency (parameter 2623 SMOOTH START FRQ).
1
START ONLY Enabled below the smooth start frequency (parameter 2623
SMOOTH START FRQ) only when starting the motor.
2
2622 SMOOTH
START CUR
Current used in the current vector rotation at low speeds.
Increase the smooth start current if the application requires
high pull-up torque. Decrease the smooth start current if
motor shaft swinging needs to be minimized. Note that
accurate torque control is not possible in the current vector
rotation mode.
Can be used for permanent magnet synchronous motors
only (see chapter Appendix: Permanent magnet
synchronous motors (PMSMs)).
50%
10…100% Value as a percentage of the nominal motor current 1 = 1%
2623 SMOOTH
START FRQ
Output frequency up to which the current vector rotation is
used.
Can be used for permanent magnet synchronous motors
only (see chapter Appendix: Permanent magnet
synchronous motors (PMSMs)).
10%
2…100% Value as a percentage of the motor nominal frequency 1 = 1%
2624 SMOOTH
STRT TIME
The maximum time the smooth start feature is active. When
value is set to 0 (default), the smooth start time limitation is
not activated.
0s
0.0…100.0 s Maximum time in seconds 1 = 1 s
All parameters
No. Name/Value Description Def/FbEq

ABB ACS355 series Specifications

General

Power Range	0.37 to 22 kW
Protection Class	IP20
Output Frequency	0 to 500 Hz
Braking Chopper	Built-in
Control Method	Scalar control, Vector control
Ambient Temperature	-10 to +50 °C
Communication Protocols	Modbus, CANopen
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature
Cooling Method	Air-cooled
Number of Phases	3-phase