ABB DriveIT ACH550-01 User Manual page 225

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
2101 START FUNCTION
Selects the motor start method.
1 =
AUTO
•
VECTOR
function to a rotating axis and start at zero speed.
•
SCALAR
2 =
DC MAGN
Note! Mode cannot start a rotating motor.
Note! The drive starts when the set pre-magnetizing time (param.
2103) has passed, even if motor magnetization is not complete.
•
VECTOR
determined by the parameter 2103
current. The normal control is released exactly after the
magnetizing time. This selection guarantees the highest
possible break-away torque.
•
SCALAR SPEED
determined by the parameter 2103
current. The normal control is released exactly after the
magnetizing time.
3 =
SCALAR FLYSTART
•
VECTOR
•
SCALAR
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.
Parameter listing and descriptions
– Selects the automatic start mode.
control modes: Optimal start in most cases. Flying start
: mode: Immediate start from zero frequency.
SPEED
– Selects the DC Magnetizing start mode.
control modes: Magnetizes the motor within the time
mode: Magnetizes the motor within the time
– Selects the flying start mode.
control modes: Not applicable.
control mode: The drive will automatically selects the
Range
1...5
using DC
DC MAGN TIME
using DC
DC MAGN TIME
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