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
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
and
). 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
NO
Disabled
0
YES
Enabled always when the frequency is below the smooth
start frequency (parameter
1
START ONLY
Enabled below the smooth start frequency (parameter
) 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
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
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.
0 s
0.0…100.0 s
Maximum time in seconds
1 = 1 s
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 ...