Firmware Manual

9000X AF Drives
MN04004001E
For more information visit: www.eaton.com
8-57
August 2010
Description of Parameters
Table 8-12: Size-Dependent Switching Frequencies
521 Motor control mode 2 6 (P1.6.12)
With this parameter you can set another motor control mode. The mode which is used
is determined by ID164.
For the available selections, see ID600.
600 Motor control mode 234567 (P1.6.1)
SVX:
0 Frequency control: The I/O terminal and keypad references are frequency
references and the frequency converter controls the output frequency
(output frequency resolution = 0.01 Hz)
1 Speed control: The I/O terminal and keypad references are speed
references and the frequency converter controls the motor speed
compensating for motor slip (accuracy ± 0.5%).
SPX:
The following selections are available for SPX drives only, except for
selection 2, which is available in the Multi-Purpose Control Application
for SVX drives also.
2 Torque control: In torque control mode, the references are used to
control the motor torque.
3 Speed control (closed loop): The I/O terminal and keypad references are
speed references and the frequency converter controls the motor speed
very accurately comparing the actual speed received from the
tachometer to the speed reference (accuracy ± 0.01%).
4 Torque control (closed loop): The I/O terminal and keypad references are
torque references and the frequency converter controls the motor torque.
601 Switching frequency 234567 (P1.6.9)
Motor noise can be minimized using a high switching frequency. Increasing the
switching frequency reduces the capacity of the frequency converter unit. The range
of this parameter depends on the size of the frequency converter:
Voltage Drive Rating HP (I
L
) Min. (kHz) Max. (kHz) Default (kHz)
230 (208 – 240) V: 1 – 20 HP 1.0 16.0 10.0
230 (208 – 240) V: 25 – 30 HP 1.0 10.0 3.6
480 (380 – 500) V: 1-1/2 – 40 HP 1.0 16.0 10.0
480 (380 – 500) V: 50 – 250 HP 1.0 6.0 3.6
575 (525 – 690) V: All 1.0 6.0 1.5
602 Field weakening point 234567 (P1.6.4)
The field weakening point is the output frequency at which the output voltage reaches
the set (ID603) maximum value.