Adapting The V/F Base Frequency - Lenze L-force HighLine C 8400 Series Reference Manual

5.4.3.1

Adapting the V/f base frequency

The V/f base frequency (C00015) determines the slope of the V/f characteristic and has
considerable influence on the current, torque, and power performance of the motor.
 The setting in
 Mains fluctuations or fluctuations of the DC-bus voltage (operation in generator mode)
do not need to be considered when the V/f base frequency is set. They are
automatically compensated for by the internal mains voltage compensation of the
device.
 Depending on the setting in C00015, it may be required to adapt the reference speed
(C00011) to traverse the entire speed range of the motor.
 The V/f base frequency is automatically calculated from the stored motor nameplate
data by the motor parameter identification:
V
frequency inverter
U : Rated motor voltage depending on the connection method
ratedmot
f : Rated motor frequency
rated
[5-4] Calculation of the V/f base frequency
Typical values of the V/f base frequency
Drive controller with 400 V mains connection
Motor voltage [V]
230 / 400
220 / 380
280 / 480
400 / 690
400
230 / 400
280 / 480
400
220 / 380
Drive controller with 230 V mains connection
Motor voltage [V]
230
220 / 380
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
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C00015 applies to all permitted mains voltages.
C00015 [Hz]
: Mains voltage 400 V or 230 V
Motor frequency [Hz]
50
50
60
50
50
50
60
87
50
Motor frequency [Hz]
50
50
L
8400 HighLine C | Reference manual
V/f characteristic control (VFCplus)
U [V]
FI
--------------------------------- - f ⋅ [Hz]
=
Rated
U [V]
Ratedmot
Motor connection






Motor connection


Motor control (MCTRL)
V/f base frequency
(C00015)
50 Hz
52.6 Hz
50 Hz
50 Hz
87 Hz
90.9 Hz
V/f base frequency
(C00015)
50 Hz
52.3 Hz
157