ABB ACSM1 Series, Manual

Page: 126 / 510

Parameters and firmware blocks
126
Group 11 START/STOP MODE
These parameters select the start and stop functions as well as the autophasing
mode, define the DC magnetising time of the motor, and configure the DC hold
function.
11
Firmware block:
START/STOP MODE
(11)
11.01 START MODE FW block: START/STOP MODE (see above)
Selects the motor start function.
Notes:
• This parameter has no effect if parameter 99.05 MOTOR CTRL MODE is set to (1) Scalar .
• Starting to a rotating machine is not possible when DC magnetising is selected ( (0) Fast or (1) Const
time ).
• With permanent magnet motors, automatic start must be used.
• This parameter cannot be changed while the drive is running.
(0) Fast DC magnetising should be selected if a high break-away torque is
required. The drive pre-magnetises the motor before the start. The
pre-magnetising time is determined automatically, being typically 200
ms to 2 s depending on the motor size.
(1) Const time Constant DC magnetising should be selected instead of FAST DC
magnetising if a constant pre-magnetising time is required (eg, if the
motor start must be simultaneous with a mechanical brake release).
This selection also guarantees the highest possible break-away
torque when the pre-magnetising time is set long enough. The pre-
magnetising time is defined by parameter
11.02 DC MAGN TIME .
WARNING! The drive will start after the set magnetising time
has passed even if motor magnetisation is not completed. In
applications where a full break-away torque is essential,
ensure that the constant magnetising time is long enough to allow
generation of full magnetisation and torque.
(2) Automatic Automatic start guarantees optimal motor start in most cases. It
includes the flying start function (starting to a rotating machine) and
the automatic restart function (stopped motor can be restarted
immediately without waiting the motor flux to die away). The drive
motor control program identifies the flux as well as the mechanical
state of the motor and starts the motor instantly under all conditions.
START/STOP MODE
22
TLF10 2 msec (4)
11.01 START MODE
[ Const time ]
11.02 DC MAGN TIME
[ 500 ms ]
11.03 STOP MODE
[ Ramp ]
11.04 DC HOLD SPEED
[ 5.0 rpm ]
11.05 DC HOLD CUR REF
[ 30 % ]
11.06 DC HOLD
[ Disabled ]
11.07 AUTOPHASING MODE
[ Turning ]