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Parameters 211
The motor can be automatically started after a short supply
power failure using the automatic restart function. See section
(page
When this parameter is set to 0.0 seconds, automatic
restarting is disabled. Otherwise, the parameter defines the
maximum duration of the power failure after which restarting is
attempted. Note that this time also includes the DC pre-
charging delay.
WARNING!
The function restarts the drive
automatically and continues operation after a supply
break. Make sure that no dangerous situations can
occur.
5.0 s
0.0 s
Automatic restarting disabled.
0
0.1 … 5.0 s
Maximum power failure duration.
1 = 1 s
Selects the motor start function for the scalar motor control
mode, ie. when
is set to
.
Notes
:
• The start function for the DTC motor control mode is
selected by parameter
• With permanent magnet motors,
start mode
must be used.
See also section
(page
Normal
Immediate start from zero speed.
0
Const time
The drive pre-magnetizes the motor before start. The pre-
magnetizing time is defined by parameter
. This mode should be selected if constant
pre-magnetizing time is required (e.g. if the motor start must
be synchronized with the release of a mechanical brake). This
setting also guarantees the highest possible break-away
torque when the pre-magnetizing time is set long enough.
Note:
This mode cannot be used to start into a rotating motor.
WARNING!
The drive will start after the set
magnetizing time has passed even if motor
magnetization is not completed. In applications where
a full break-away torque is essential, ensure that the constant
magnetizing time is long enough to allow generation of full
magnetization and torque.
1
Automatic
This setting should be used
• in applications where flying starts (ie. starting into a rotating
motor) are required, and
• with permanent magnet motors.
2
In a torque-controlled follower drive, forces (or selects a
source that forces) the drive to switch to speed control upon a
ramp stop (Off1 or Off3) command. This is required for an
independent ramp stop of the follower.
See also section
(page
1 = Ramp stop forces speed control
Not selected
0.
0
Selected
1.
1
DIIL
DIIL input (
, bit 15).
2
DI1
Digital input DI1 (
, bit 0).
3
DI2
Digital input DI2 (
, bit 1).
4
DI3
Digital input DI3 (
, bit 2).
5
No.
Name/Value
Description
Def
/
FbEq16
Содержание ACS880-x04
Страница 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Страница 4: ......
Страница 18: ...18 Using the control panel ...
Страница 24: ...24 Control locations and operating modes ...
Страница 111: ...Application macros 111 Fieldbus control macro This application macro is not supported by the current firmware version ...
Страница 112: ...112 Application macros ...
Страница 496: ...496 Additional parameter data ...
Страница 544: ...544 Fault tracing ...
Страница 602: ...602 Control chain diagrams ...