ABB ACS 800 Series, Firmware Manual

Page: 226 / 340

Actual signals and parameters
226
SCALAR Scalar control is suitable in special cases where the DTC cannot be applied.
The Scalar control mode is recommended:
- for multimotor drives with variable number of motors
- when the nominal current of the motor is less than 1/6 of the nominal output
current of the drive (inverter)
- the drive is used for test purposes with no motor connected.
Note: The outstanding motor control accuracy of the DTC cannot be achieved
in Scalar control. The differences between the scalar and DTC control modes
are pointed out in this manual in relevant parameter lists. There are some
standard features that are disabled in the Scalar control mode: Motor
identification run (group
99 START-UP DATA ), Speed Limits (group 20
LIMITS ), Torque Limit (group 20 LIMITS ), DC hold (group 21 START/STOP ),
DC Magnetizing (group 21 START/STOP ), Speed Controller Tuning (group 23
SPEED CTRL ), Torque Control (group 24 TORQUE CTRL ), Flux optimisation
(group 26 MOTOR CONTROL ), Flux braking (group 26 MOTOR CONTROL ),
Underload Function (group 30 FAULT FUNCTIONS ), Motor phase loss
Protection (group 30 FAULT FUNCTIONS ), Motor Stall protection (group 30
FAULT FUNCTIONS ).
For more information, see section Scalar control on page 73 .
65535
99.05 MOTOR NOM
VOLTAGE Defines the nominal motor voltage. Must be equal to the value on the motor
rating plate.
1/2 … 2 · UN Voltage. Allowed range is 1/2 … 2 · U
N
of the drive.
Note: The stress on the motor insulations is always dependent on the drive
supply voltage. This also applies to the case where the motor voltage rating is
lower than the rating of the drive and the supply of the drive.
1 = 1 V
99.06 MOTOR NOM
CURRENT Defines the nominal motor current. Must be equal to the value on the motor
rating plate.
Note: Correct motor run requires that the magnetizing current of the motor
does not exceed 90 percent of the nominal current of the inverter.
0 … 2 · I
2hd
Allowed range: approx. 1/6 … 2 · I
2hd
of ACS800 (parameter 99.04 = DTC).
Allowed range: approx. 0 … 2 · I
2hd
of ACS800 (parameter 99.04 = SCALAR).
1 = 0.1 A
99.07 MOTOR NOM FREQ Defines the nominal motor frequency.
8 … 300 Hz Nominal frequency (50 or 60 Hz typically) 800 …
30000
99.08 MOTOR NOM SPEED Defines the nominal motor speed. Must be equal to the value on the motor
rating plate. The motor synchronous speed or another approximate value must
not be given instead!
Note: If the value of parameter 99.08 is changed, the speed limits in parameter
group 20 LIMITS change automatically as well.
1 … 18000 rpm Nominal motor speed 1 … 18000
99.09 MOTOR NOM
POWER Defines the nominal motor power. Set exactly as on the motor rating plate.
0 … 9000 kW Nominal motor power 0 … 90000
Index Name/Selection Description FbEq