ABB ACS355 series User Manual page 246

246 Actual signals and parameters
All parameters
No. Name/Value
2619 DC
STABILIZER
DISABLE
ENABLE
2621 SMOOTH
START
NO
YES
START ONLY
2622 SMOOTH
START CUR
10...100%
2623 SMOOTH
START FRQ
2...100%
2624 SMOOTH
STRT TIME
0.0...100.0 s
Description
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.
Disabled
Enabled
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
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
Disabled
Enabled always when the frequency is below the smooth
start frequency (parameter
Enabled below the smooth start frequency (parameter
SMOOTH START FRQ) only when starting the motor.
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
Value as a percentage of the nominal motor current
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
Value as a percentage of the motor nominal frequency
The maximum time the smooth start feature is active. When
value is set to 0 (default), the smooth start time limitation is
not activated.
Maximum time in seconds
2202 and 2203). If the process
(PMSMs)).
2623 SMOOTH START
(PMSMs)).
(PMSMs)).
Def/FbEq
DISABLE
0
1
NO
0
1
FRQ).
2623 2
50%
1 = 1%
10%
1 = 1%
0 s
1 = 1 s