8400 StateLine C | Reference manual
Motor control (MCTRL)
V/f characteristic control (VFCplus)
140
L
Firmware
≤
11.00 - DMS 8.0 EN - 10/2011
5.4.3.6
Defining a user-defined V/f characteristic
This function extension is only available from version 04.00.00!
For individual adaptation of the motor magnetisation to the actual application, the motor
control "10: VFCplus: V/f definable" with a freely definable characteristic can be selected in
C00006
as an alternative if the linear and quadratic characteristics are not suitable.
The 11 grid points (voltage/frequency values) of the characteristic are stipulated by
means of the 11 subcodes of
C00967
and
C00968
.
– It is necessary to set all 11 grid points by means of corresponding subcodes.
– If fewer grid points (voltage/frequency values) are needed, this can be achieved
indirectly by ascribing the same voltage and frequency values to consecutive grid
points.
Example: C00967/
3
= C00967/
4
and C00968/
3
= C00968/
4
– The grid points can be specified in any sequence. Internally, they are automatically
ordered from the minimum to the maximum frequency value.
– Above the maximum and below the minimum frequency, the previous rise is
continued until the maximum output voltage.
In the Lenze setting, the 11 grid points represent a linear characteristic.
– 3-phase devices: Output voltage 400 V at f = 50 Hz
– 1-phase devices: Output voltage 230 V at f = 50 Hz
[5-7]
Freely definable characteristic (Lenze setting for 3-phase devices)
Note!
The V/f base frequency (
C00015
) and the V
min
boost (
C00016
) no longer exert an
influence if this motor control is chosen.
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
V
400 V
320 V
240 V
160 V
80 V
0 V
80 V
160 V
240 V
320 V
400 V
f
-50 Hz
-40 Hz
-30 Hz
-20 Hz
-10 Hz
0 Hz
10 Hz
20 Hz
30 Hz
40 Hz
50 Hz
U [V]
160
0
f [Hz]
240
320
400
10
20
30
40
50
-50
-40
-30
-20
-10
80
C00967/1
C00968/1
C00967/2
C00968/2
C00967/3
C00968/3
C00967/11
C00968/11
P1
P2
P3
P4
P5
P7
P6
P8
P9
P10
P11
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
