ABB ACS150 series, User Manual

Page: 100 / 173

99
Actual signals and parameters
Parameters in the Long parameter mode
Index Name/Selection Description Def
2008 MAXIMUM FREQ Defines the maximum limit for the drive output frequency. E: 50.0 Hz /
U: 60.0 Hz
0.0
…500.0 Hz
Maximum frequency. See parameter 2007 MINIMUM FREQ.
2020 BRAKE CHOPPER Selects the brake chopper control. 0 = INBUILT
0 = INBUILT Internal brake chopper control.
Note: Ensure the brake resistor(s) is installed and the overvoltage control is
switched off by setting parameter 2005 OVERVOLT CTRL to selection 0
(DISABLE).
1 = EXTERNAL External brake chopper control.
Note: The drive is compatible only with ABB ACS-BRK-X brake units.
Note: Ensure the brake unit is installed and the overvoltage control is
switched off by setting parameter 2005 OVERVOLT CTRL to selection 0
(DISABLE).
21 START/STOP
Start and stop modes of the motor
2101 START FUNCTION Selects the motor starting method. 1 = AUTO
1 = AUTO Frequency reference ramps immediately from 0 Hz.
2 = DC MAGN The drive pre-magnetizes the motor with DC current before the start.
The pre-magnetizing time is defined by parameter
2103 DC MAGN TIME.
Note: Starting the drive connected to a rotating motor is not possible when 2
(DC MAGN) is selected.
WARNING! The drive starts after the set pre-magnetizing time has passed
even if the motor magnetization is not completed. In applications where a full
break-away torque is essential, always ensure that the constant magnetizing
time is long enough to allow generation of full magnetization and torque.
4 = TORQ BOOST Torque boost should be selected if a high break-away torque is required.
The drive pre-magnetizes the motor with DC current before the start.
The pre-magnetizing time is defined by parameter
2103 DC MAGN TIME.
Torque boost is applied at start. Torque boost is stopped when output
frequency exceeds 20 Hz or when it is equal to the reference value. See
parameter
2110 TORQ BOOST CURR.
Note: Starting the drive connected to a rotating motor is not possible when 4
(TORQ BOOST) is selected.
WARNING! The drive starts after the set pre-magnetizing time has passed
although the motor magnetization is not completed. In applications where a
full break-away torque is essential, always ensure that the constant
magnetizing time is long enough to allow generation of full magnetization and
torque.
6 = SCAN START Frequency scanning flying start (starting the drive connected to a rotating
motor). Based on frequency scanning (interval
2008 MAXIMUM
FREQ... 2007 MINIMUM FREQ) to identify the frequency. If frequency
identification fails, DC magnetization is used. See selection 2 (DC MAGN).
7 = SCAN+BOOST Combines frequency scanning flying start (starting the drive connected to a
rotating motor) and torque boost. See selections 6 (SCAN START) and 4
(TORQ BOOST). If frequency identification fails, torque boost is used.
2102 STOP FUNCTION Selects the motor stop function. 1 = COAST
1 = COAST Stop by cutting off the motor power supply. The motor coasts to stop.
2 = RAMP Stop along a ramp. See parameter group 22 ACCEL/DECEL .