Parameter listing and descriptions
219
ACH550 User's Manual
Group 21: START/STOP
This group defines how the motor starts and stops. The ACH550
supports several start and stop modes.
Code Description
Range
2101
START FUNCTION
1…5
Selects the motor start method.
1 =
AUTO
– Selects the automatic start mode.
•
VECTOR
:
SPEED
mode: Optimal start in most cases. Flying start
function to a rotating axis and start at zero speed.
•
SCALAR
:
FREQ
mode: Immediate start from zero frequency.
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) has passed, even if motor magnetization is not complete.
•
VECTOR
:
SPEED
mode: Magnetizes the motor within the time
determined by 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
:
SPEED
mode: Not applicable.
•
SCALAR
:
FREQ
mode: The drive will automatically select the correct
output frequency to start a rotating motor. Useful if the motor is
already rotating and the drive will start smoothly at the current
frequency.
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 the 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.
Содержание ACH550-01
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