
Parameters 157
DI4
Digital input DI4 (
, bit 3).
5
DI5
Digital input DI5 (
, bit 4).
6
Supervision 1
Bit 0 of
). 8
Supervision 2
Bit 1 of
).
9
Supervision 3
Bit 2 of
).
10
).
-
Time delay before pre-heating starts after the drive is
stopped.
60 s
10...3000 s
Pre-heating time delay.
1 = 1 s
Defines the DC current used to heat the motor. The value
is in percent of the nominal motor current.
0.0%
0.0…30.0%
Pre-heating current.
1 = 1%
Selects the motor start function for the scalar motor
control mode, ie. when
is set to
Notes
:
• The start function for the vector motor control mode is
selected by parameter
.
• With permanent magnet motors,
start mode
must be used.
• This parameter cannot be changed while the drive is
running.
See also section
on 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
The drive automatically selects the correct output
frequency to start a rotating motor. This is useful for flying
starts: if the motor is already rotating, the drive will start
smoothly at the current frequency.
Note:
Cannot be used in multimotor systems.
2
Torque boost
Torque boost is applied at start, ending when output
frequency exceeds 40% of nominal frequency or when
output frequency is equal to reference.
3
Aut boost
If the Flystart routine does not detect rotating motor,
torque boost is applied.
4
No.
Name/Value
Description
Default
FbEq 16
ACS180 FW.book Page 157 Tuesday, March 9, 2021 2:25 PM