Download 8 - DEMPAN

Description of parameters
600
Motor control mode
234567
171(209)
(2.6.1)
NXS:
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 the motor slip (accuracy ± 0,5%).
2
Torque control
(Multi-Purpose Control application only) In torque
control mode, the references are used to control the motor
torque.
The following selections are available for NXP drives in applications 2, 3, 4, 5 and 7.
Selections 5 and 6 are not available in application 6 (Multipurpose Control Application).
601
3
Speed crtl (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 crtl (closed loop) The I/O terminal and keypad references are torque references
and the frequency converter controls the motor torque.
Switching frequency
234567
(2.6.9)
Motor noise can be minimised 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:
Type
0003—0061 NX_5
0003—0061 NX_2
0072—0520 NX_5
0041—0062 NX_6
0144—0208 NX_6
Min. [kHz]
Max. [kHz]
Default [kHz]
1.0
16,0
10.0
1.0
10.0
3.6
1.0
6.0
1.5
Table 8-12. Size-dependent switching frequencies
Note! The actual switching frequency might be reduced down to 1,5kHz by thermal
management functions. This has to be considered when using sine wave filters or
other output filters with a low resonance frequency.
602
Field weakening point
234567
(2.6.4)
The field weakening point is the output frequency at which the output voltage reaches
the set (ID603) maximum value.
8