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192 Actual signals and parameters
Group 21: Start/Stop
This group defines how the motor starts and stops. The drive supports several start
and stop modes.
Group 21: Start/Stop
Code
Description
Range
Resolution
Default
S
2101
START FUNCTION
1…7
1
6
Selects the motor start method.
1 = AUTO – The drive starts the motor instantly from zero frequency. If flying start is
required, use selection SCAN START.
2 = DC MAGN – The drive pre-magnetizes the motor with DC current before the start.
The pre-magnetizing time is defined by parameter
.
Note:
Starting to a rotating machine is not possible when DC MAGN is selected.
WARNING!
The drive will start after the set pre-magnetizing time has passed
even if the motor magnetization is not completed. Ensure always in applications
where a full break-away torque is essential, that the constant magnetizing time is long
enough to allow generation of full magnetization and torque.
4 = TORQ BOOST – Torque boost should be selected if a high break-away torque is
required.
The drive pre-magnetizes the motor with DC current before the start. The pre-
magnetizing time is defined by parameter
.
Torque boost is applied at start. Torque boost is stopped when output frequency
exceeds 20 Hz or when it is equal to the reference value. See parameter
.
Note:
Starting to a rotating machine is not possible when TORQ BOOST is selected.
WARNING!
The drive will start after the set pre-magnetizing time has passed
although the motor magnetization is not completed. Ensure always in
applications where a full break-away torque is essential, that the constant magnetizing
time is long enough to allow generation of full magnetization and torque.
6 = SCAN START – Frequency scanning flying start (starting the drive connected to a
rotating machine). Based on frequency scanning (interval
) to identify the frequency. If frequency
identification fails, DC magnetization is used (see selection DC MAGN).
7 = SCAN + BOOST – Combines scanning start (starting the drive connected to a
rotating machine) and torque boost. See selections SCANSTART and TORQ
BOOST. If frequency identification fails, torque boost is used.
2102
STOP FUNCTION
1, 2
1
1
Selects the motor stop method.
1 = COAST – Selects cutting off the motor power as the stop method. The motor
coasts to stop.
2 = RAMP – Selects using a deceleration ramp
• Deceleration ramp is defined by
(whichever is active).
Summary of Contents for ACS320 series
Page 1: ...ABB drives User s manual ACS320 drives 0 5 to 30 hp ...
Page 4: ......
Page 18: ...18 Safety ...
Page 28: ...28 Operation principle and hardware description ...
Page 56: ...56 Electrical installation ...
Page 142: ...142 Program features Connection diagram example ACS320 xx xxxx x ...
Page 282: ...282 Actual signals and parameters ...
Page 358: ...358 Fieldbus control ...
Page 376: ...376 Fault tracing ...
Page 382: ...382 Maintenance and hardware diagnostics ...
Page 407: ...Dimension drawings 407 Frame size R2 NEMA 1 Frame size R2 IP20 NEMA 1 3AUA0000051097 A ...
Page 409: ...Dimension drawings 409 Frame size R3 NEMA 1 Frame size R3 IP20 NEMA 1 3AUA0000051118 A ...
Page 411: ...Dimension drawings 411 Frame size R4 NEMA 1 Frame size R4 IP20 NEMA 1 3AUA0000051133 A ...
Page 412: ...412 Dimension drawings ...
Page 413: ...Index Numerics A B C D E F G H I K L M N O P R S T ...