Vacon NX series Applications Manual page 310

VACON · 310
Table 157: Selection for ID600 Motor control mode
Selection
number
Frequency control
0
Speed control
1
Torque control
2
Speed crtl (closed loop)
3
Torque crtl (closed loop)
4
601 SWITCHING FREQUENCY 234567 (2.6.9)
If you increase the switching frequency, the capacity of the AC drive reduces. To reduce
capacitive currents in the motor cable, when the cable is long, we recommend that you use a
low switching frequency. To reduce the motor noise, use a high switching frequency.
The range of this parameter depends on the size of the AC drive:
Table 158: Size-dependent switching frequencies
Type
0003—0061 NX_5
0003—0061 NX_2
0075—0300 NX_2
0072—0520 NX_5
0041—0062 NX_6
0144—0208 NX_6
8
Selection name
Drive frequency reference is set to output frequency without
slip compensation. Motor actual speed is finally defined by
motor load.
Drive frequency reference is set to motor speed reference.
The motor speed is remains the same regardless of motor
load. Slip is compensated.
Speed reference is used as maximum speed limit and the
motor produces torque within speed limit to achieve torque
reference.
Drive frequency reference is set to motor speed reference.
The motor speed remains the same regardless of motor
load. In Closed Loop control mode, speed feedback signal is
used to achieve optimum speed accuracy.
Speed reference is used as the maximum speed limit that
depends on the torque speed limit CL (ID1278) and motor
produces torque within speed limit to achieve torque refer-
ence. In Closed Loop control mode, speed feedback signal is
used to achieve optimum torque accuracy.
Min. [kHz]
1.0
1.0
1.0
1.0
PARAMETER DESCRIPTIONS
Description
Max. [kHz]
16.0
10.0
6.0
6.0
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Default [kHz]
10.0
3.6
3.6
1.5