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ACH550-UH User’s Manual
Parameters
Group 21: START/STOP
This group defines how the motor starts and stops. The ACH550 supports several
start and stop modes.
Group 21: Start/Stop
Code Description Range
Resolution
Default
S
2101
START FUNCTION
Vector control modes:
1
3 (
SCALAR
FLYST
)
1, 2, 8
Scalar control mode:
1…5, 8
Selects the motor start method. The valid options depend on the value of parameter 9904
MOTOR
CTRL
MODE
.
1 =
AUTO
– Selects the automatic start mode.
• Vector control modes: Optimal start in most cases. The drive automatically selects the correct output frequency
to start a rotating motor.
•
SCALAR
:
FREQ
mode: Immediate start from zero frequency. Identical to selection 8 =
RAMP
.
2 =
DC
MAGN
– Selects the DC Magnetizing start mode.
Note:
The DC Magnetizing start mode cannot start a rotating motor.
Note:
The drive starts when the set pre-magnetizing time (parameter 2103
DC
MAGN
TIME
) has passed, even if motor
magnetization is not complete.
• Vector control modes: Magnetizes the motor within the time determined by the parameter 2103
DC
MAGN
TIME
using DC current. The normal control is released exactly after the magnetizing time. This selection guarantees
the highest possible break-away torque.
•
SCALAR
:
FREQ
mode: Magnetizes the motor within the time determined by the parameter 2103
DC
MAGN
TIME
using
DC current. The normal control is released exactly after the magnetizing time.
3 =
SCALAR
FLYST
– Selects the flying start mode.
• Vector control modes: Not applicable.
•
SCALAR
:
FREQ
mode: The drive automatically selects the correct output frequency to start a rotating motor – useful
if the motor is already rotating and if the drive will start smoothly at the current frequency.
• Cannot be used in multimotor systems.
4 =
TORQ
BOOST
– Selects the automatic torque boost mode (
SCALAR
:
FREQ
mode only).
• May be necessary in drives with high starting torque.
• Torque boost is only applied at start, ending when output frequency exceeds 20 Hz or when output frequency is
equal to reference.
• In the beginning the motor magnetizes within the time determined by the parameter 2103
DC
MAGN
TIME
using
DC current.
• See parameter 2110
TORQ
BOOST
CURR
.
5 =
FLY
+
BOOST
– Selects both the flying start and the torque boost mode (
SCALAR
:
FREQ
mode only).
• Flying start routine is performed first and the motor is magnetized. If the speed is found to be zero, the torque
boost is done.
8 =
RAMP
– Immediate start from zero frequency.
2102
STOP FUNCTION
1, 2
1
1 (
COAST
)
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 2203
DECELER
TIME
1 or 2206
DECELER
TIME
2 (whichever is active).
2103
DC MAGN TIME
0.00…10.00 s
0.01 s
0.30 s
Defines the pre-magnetizing time for the DC Magnetizing start mode.
• Use parameter 2101 to select the start mode.
• After the start command, the drive pre-magnetizes the motor for the time defined here and then starts the motor.
• Set the pre-magnetizing time just long enough to allow full motor magnetization. Too long a time heats the motor
excessively.
Summary of Contents for ACH550-BCR
Page 4: ...iv Manual contents ...
Page 6: ......
Page 12: ...1 8 ACH550 UH User s Manual Table of contents ...
Page 36: ...1 32 ACH550 UH User s Manual Installation ...
Page 70: ...1 66 ACH550 UH User s Manual Application macros ...
Page 335: ...ACH550 UH User s Manual 1 331 Technical data ...
Page 348: ......
Page 382: ...2 36 ACH550 E Clipse Bypass User s Manual Start up ...
Page 398: ...2 52 ACH550 E Clipse Bypass User s Manual Bypass functions overview ...
Page 406: ...2 60 ACH550 E Clipse Bypass User s Manual Application macros ...
Page 544: ...2 198 ACH550 E Clipse Bypass User s Manual Embedded fieldbus ...
Page 584: ...2 238 ACH550 E Clipse Bypass User s Manual Diagnostics ...
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Page 612: ...3 6 ACH550 UH User s Manual Table of contents ...
Page 622: ...3 16 ACH550 PCR PDR User s Manual Installation ...
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