Lenze 8400 User Manual

Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 171
5 Motor control (MCTRL)
5.4 V/f characteristic control (VFCplus)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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 selected via 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

Lenze 8400 Specifications

General

Category	DC Drives
Series	8400
Protection class	IP20
Control Type	Vector control
Communication	CANopen, PROFIBUS, Ethernet
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Input Voltage	AC 230/400/480 V