190 Parameters
Constant 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. 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 (a
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.
2
Defines the pre-magnetization time when
• parameter
is set to
(in
DTC motor control mode), or
• parameter
is set to
(in scalar motor control mode).
After the start command, the drive automatically
premagnetizes the motor for the set time. To ensure full
magnetizing, set this parameter to the same value as, or
higher than, the rotor time constant. If not known, use the
rule-of-thumb value given in the table below:
Note: This parameter cannot be changed while the drive is
running.
500 ms
0…10000 ms
Constant DC magnetizing time.
1 = 1 ms
Selects the way the motor is stopped when a stop
command is received.
Additional braking is possible by selecting flux braking (see
parameter
).
Coast
Stop by switching off the output semiconductors of the
drive. The motor coasts to a stop.
WARNING! If a mechanical brake is used, ensure it
is safe to stop the drive by coasting.
0
Ramp
Stop along the active deceleration ramp. See parameter
group
.
1
Torque limit
Stop according to torque limits (parameters
and
).
2
No.
Name/Value
Description
Def/
FbEq16
Motor rated power
Constant magnetizing time
< 1 kW
> 50 to 100 ms
1 to 10 kW
> 100 to 200 ms
10 to 200 kW
> 200 to 1000 ms
200 to 1000 kW
> 1000 to 2000 ms
Summary of Contents for ACS880 ESP
Page 1: ...ABB industrial drives Firmware manual ACS880 PCP ESP control program ...
Page 4: ......
Page 28: ...28 PCP ESP control start up ...
Page 30: ...30 Using the control panel ...
Page 94: ...94 Standard programposi features ...
Page 100: ...100 Default control connections ...
Page 360: ...360 Parameters ...
Page 436: ...436 Fault tracing ...
Page 486: ...486 Control chain diagrams ...
Page 492: ...492 Appendix ESP with step up transformer and sine filter ...
Page 494: ...Contact us www abb com drives www abb com drivespartners 3AXD50000016186 Rev B EN 2015 10 27 ...