ABB ACS180, Firmware Manual, Page: 152 / 392

152 Parameters
0000h…FFFFh Word for disabling enable signal warnings. 1 = 1
21
21 Start/stop mode
Start and stop modes; emergency stop mode and signal
source selection; DC magnetization settings.
21.01 Start mode Selects the motor start function for the vector motor
control mode, ie. when
99.04 Motor control mode is set to
Vector .
Notes :
• The start function for the scalar motor control mode is
selected by parameter 21.19 Scalar start mode .
• Starting into a rotating motor is not possible when DC
magnetizing is selected ( Fast or Const time ).
• With permanent magnet motors, Automatic start mode
must be used.
• This parameter cannot be changed while the drive is
running.
See also section DC magnetization on page 66 .
Const time
Fast The drive pre-magnetizes the motor before start. The pre-
magnetizing time is determined automatically, typically
200 ms to 2 s depending on motor size. Select this mode
if a high break-away torque is required. 0
Const time The drive pre-magnetizes the motor before start. The pre-
magnetizing time is defined by parameter
21.02
Magnetization time . 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.
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 Automatic start guarantees optimal motor start in most
cases. It includes the flying start function (starting into a
rotating motor) and the automatic restart function. 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.
Note: If parameter 99.04 Motor control mode is set to
Scalar , no flying start or automatic restart is possible
unless parameter 21.19 Scalar start mode is set to
Automatic .
2
No. Name/Value Description Default
FbEq 16
Bit Name Description
0 Enable to rotate 1 = Warning AFED Enable to rotate is suppressed.
1 Run enable missing 1 = Warning AFEB Run enable missing is suppressed.
3…15 Reserved
ACS180 FW.book Page 152 Tuesday, March 9, 2021 2:25 PM