218 Actual signals and parameters
2021 MAX SPEED
SEL
Maximum speed source for torque control PAR 2002
PAR 2002 Value of parameter 2002 MAXIMUM SPEED 0
EXT REF 1 Value of signal 0111 EXTERNAL REF 1 1
21 START/STOP Start and stop modes of the motor
2101 START
FUNCTION
Selects the motor starting method. AUTO
AUTO The drive starts the motor instantly from zero frequency if
parameter 9904 MOTOR CTRL MODE setting is SCALAR:
FREQ. If flying start is required use selection SCAN START.
If parameter 9904 MOTOR CTRL MODE value is VECTOR:
SPEED or VECTOR: TORQ, the drive pre-magnetizes the
motor with DC current before the start. The pre-magnetizing
time is defined by parameter 2103 DC MAGN TIME. See
selection DC MAGN.
For permanent magnet motors, flying start is used if the
motor is rotating.
1
DC MAGN The drive pre-magnetizes the motor with DC current before
the start. The pre-magnetizing time is defined by parameter
2103 DC MAGN TIME.
If parameter 9904 MOTOR CTRL MODE value is VECTOR:
SPEED or VECTOR: TORQ, DC magnetizing guarantees
the highest possible break-away torque when the pre-
magnetizing is set long enough.
Note: Starting the drive connected to a rotating motor is not
possible when DC MAGN is selected. When a permanent
magnet motor is used, alarm MOTOR BACK EMF (2029) is
generated.
WARNING! The drive will start after the set pre-
magnetizing time has passed even if the motor
magnetization is not completed. In applications where a full
break-away torque is essential, always ensure that the
constant magnetizing time is long enough to allow
generation of full magnetization and torque.
2
All parameters
No. Name/Value Description Def/FbEq
To Next Page
Loading...
Need help?
General
