Lenze EVS9326-EK User Manual

Function block library
7-148

SHB9300CRV EN 2.0
7.6.47.9 Field weakening
The field weakening does not have to be set if the motor type was set under under C0086. All
necessary settings are done automatically. The motor is operated in the field weakening, if:
l the output voltage of the controller exceeds the rated motor voltage set under C0090.
l the controller can no longer increase the output voltage with increasing speed, due to the
mains voltage or DC bus voltage.
Manual field weakening
A manual field weakening is possible via the input MCTRL-FLD-WEAK. For a maximum excitation,
this input must be triggered with +100% (e.g.FIXED100%).
Stop!
The available torque is reduced by the field weakening.
7.6.47.10 Chopping frequency change-over
The chopping frequency of the inverter can be selected:
l 8 kHz fixed, for operation with optimum power (C0018 = 1)
– maximum power output of the controller, but with audible pulse operation
l 16 kHz fixed, for operation with optimum noise (C0018 = 2)
– inaudible pulse operation of the controller,but with reduced power (torque)
l automatic change-over between operation with optimum power and optimum noise
(C0018 = 0)
Automatic chopping frequency change-over
The automatic chopping frequency change-over can be used if the drive is to be operated with
optimum noise, but the torque available in this mode is not sufficient for accelerations.
Condition M = f(I) Function
M< M
r16
(I
r16
) Controller operates with 16 kHz (optimum noise)
M
r16
(I
r16
)< M< M
r8
(I
r8
) Controller changes to 8 kHz (optimum power)
M> M
max8
(I
max8
) Controller operates with 8 kHz in its current limit
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Lenze EVS9326-EK Specifications

General

Brand	Lenze
Model	EVS9326-EK
Category	DC Drives
Language	English