148 Parameters
The motor can be automatically started after a short supply
power failure using the automatic restart function. See section
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
.
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
(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.
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
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...