Larsen & Toubro C*2000 Series User Manual page 99

Chapter 7 Basic Functions
User V/F pattern operation
Group
Function group 1
Set F30 to 2 (user V/F).
User can adjust the Volt/Frequency ratio according to V/F pattern of specialized motors and load
characteristics.
In case of using a standard induction motor, if this value is set much higher than linear V/F pattern,
it could result in torque shortage or motor overheating due to over-energizing.
When User V/F curve is active, F28 - [Torque Boost in forward direction] and F29 - [Torque Boost
in reverse direction] are deactivated.
Output voltage adjustment
Group Code
Function group 1 F39
This function is used to adjust the output voltage of the inverter. This is useful when the raged voltage
of the motor is different from the input voltage of the inverter.
7-18
Code Item
F30 V/F pattern
F31 User V/F frequency 1
～
~
F38 User V/F voltage 4
Caution
V o lta g e
1 0 0%
F 3 8
F 3 6
F 3 4
F 3 2
F 3 1 F 3 3 F 3 5
S ta rt
fre q.
Item
Output voltage adjustment
V o lta g e
1 0 0%
7 0%
Set value Range
2 0 ~ 2
- 0.00~ 400.00 12.50
- 0 ~ 100
L in e a r
V/ F
F re q .
F 3 7
B a se
fre q .
Set value Range
- 40 ~ 110
1 0 0％ S e ttin g
7 0％ S e ttin g
F re q.
B a se fre q.
Initial Unit
0
Hz
100 %
Initial Unit
100 %
Cx2000 AC Drive