ABB ACS255 User Manual page 47

48
Parameters in the Long parameter mode
Index Name/Selection
2006 MAINS LOSS RIDE
THROUGH / STOP
CONTROL
0: MAINS LOSS RIDE
THROUGH.
1: COAST TO STOP.
2: FAST RAMP TO STOP.
3: DC BUS POWER SUPPLY
MODE.
2007 MINIMUM FREQUENCY /
SPEED LIMIT
0.0 HZ...2008
2008 MAXIMUM FREQUENCY /
SPEED LIMIT
2007...500.0 Hz
2014 TORQUE CONTROL
REFERENCE / LIMIT
SOURCE
0: FIXED DIGITAL
1: ANALOG INPUT 1
2: ANALOG INPUT 2
3: FIELDBUS.
2015 MINIMUM MOTORING
TORQUE LIMIT
0.0 %...2017
2017 MAXIMUM MOTORING
TORQUE LIMIT / CURRENT
LIMIT
2015...500.00 %
2022 GENERATOR MODE MAX.
TORQUE LIMIT
(MAXIMUM
REGENERATIVE TORQUE)
0.0...500 %
21 START/STOP
2101 SPIN START ENABLE
0 : DISABLED
1 : ENABLED
Description
Controls the behaviour of the drive in response to a loss of mains power supply whilst the
drive is enabled.
The ACS255 will attempt to continue operating by recovering energy from the load motor.
Providing that the mains loss period is short, and sufficient energy can be recovered before
the drive control electronics power off, the drive will automatically restart on return of mains
power.
The ACS255 will immediately disable the output to the motor, allowing the load to coast or
free wheel. When using this setting with high inertia loads, the Spin Start function Parameter
2101 SPIN START ENABLE may need to be enabled.
The drive will ramp to stop at the rate programmed in the 2
parameter 2206 2 nd DECELERATION RAMP TIME.
This mode is intended to be used when the drive is powered directly via the +DC and –DC Bus
connections. Refer to your ABB Sales Partner for further details.
Minimum output frequency or motor speed limit – Hz or rpm.
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm
Minimum frequency
Maximum output frequency or motor speed limit – Hz or rpm.
If parameter 9908 MOTOR RATED SPEED >0, the value entered / displayed is in Rpm
Maximum frequency
When parameter 9903 MOTOR CONTROL MODE = 0, this parameter defines the source for
the maximum output torque limit.
When parameter 9903 MOTOR CONTROL MODE = 1, this parameter defines the source for
the torque reference (setpoint).
The torque controller reference / limit is set in parameter 2017 MAXIMUM MOTORING
TORQUE LIMIT/CURRENT LIMIT.
The output torque is controlled based on the signal applied to Analog Input 1, whereby 100%
input signal level will result in the drive output torque being limited by the value set in
parameter 2017 MAXIMUM MOTORING TORQUE LIMIT/CURRENT LIMIT.
The output torque is controlled based on the signal applied to Analog Input 2, whereby 100%
input signal level will result in the drive output torque being limited by the value set in
parameter 2017 MAXIMUM MOTORING TORQUE LIMIT/CURRENT LIMIT..
The output torque is controlled based on the signal from the communications Fieldbus,
whereby 100% input signal level will result in the drive output torque being limited by the
value set in parameter 2017 MAXIMUM MOTORING TORQUE LIMIT/CURRENT LIMIT..
Active only in Vector Speed or Vector Torque motor control modes (9903 MOTOR CONTROL
MODE = 0 or 1). Sets a minimum torque limit, whereby when the ACS255 is enabled, it will
always attempt to maintain this torque on the motor at all times whilst operating.
WARNING : This parameter should be used with extreme care, as the drive output frequency
will increase to achieve the torque level, and may exceed the selected speed reference.
When operating in Vector Speed or Vector Torque motor control modes (9903 MOTOR
CONTROL MODE = 0 or 1) this parameter defines the maximum torque limit or reference
used by the drive in conjunction with parameter 2014 TORQUE CONTROL REFERENCE/LIMIT
SOURCE .
When operating in V/F Mode (9903 MOTOR CONTROL MODE = 2), this parameter defines the
maximum output current the drive will provide to the motor before reducing the output
frequency to attempt to limit the current.
Active only in Vector Speed or Vector Torque motor control modes (parameter 9903 = 0,1,3).
Sets the maximum regenerating torque allowed by the ACS255
Start and Stop modes of the motor
Starting the drive connected to a rotating motor.
On start up the drive will attempt to determine if the motor is already rotating, and will
begin to control the motor from its current speed. A short delay may be observed when
starting motors which are not turning.
nd
deceleration time as set in
Def
0: Mains
Loss Ride
Through.
0.0 Hz
60.0 Hz
0: Fixed
Digital
0.0%
200.0%
200.0%
0 : Disabled