V/F Control - Larsen & Toubro C*2000 Series User Manual

7.5 V/F control

Linear V/F pattern operation
Group
Function group 1
Function group 2
Set F30 to 0 (linear)
This pattern maintains a linear Volts/frequency ratio from F23 (Start frequency) to F22 (Base
frequency).
 Base Frequency: Inverter outputs its rated voltage frequency. Refer to the motor nameplate Data.
 Start Frequency: Inverter starts to output its voltage frequency.
Square V/F pattern
Group
Function group 1
Set F30 to 1(square).
This pattern maintains squared volts/hertz ratio. Appropriate applications are fans, pumps, etc.
Cx2000 AC Drive
Code Item
Base frequency
F22
F23 Start frequency
F30 V/F pattern
H40 Control mode select
B a se fre q .
F re q .
In ve rte r ra te d
vo lta g e
V o lta g e
R u n
co m m a n d
Code Item
F30 V/F pattern
V oltage
100%
B ase freq.
Chapter 7 Basic Functions
Set value Range
- 30.00 ~ 400.00
- 0.10~10.00
0 0 ~ 2
- 0 ~ 3
S ta rt fre q .
Set value Range
1 0 ~ 2
Initial Unit
50.00 Hz
0.50 Hz
0
0
Initial Unit
0
F req.
7-17