5.4 Details of Function Codes
5-105
Details of
Function Codes
F37
E codes
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d codes
U codes
y codes
Chapter 5 Function Code
V/f pattern
The FRENIC-MEGA series of inverters offer a variety of V/f patterns and torque boosts, which include V/f
patterns suitable for variable torque load such as general fans and pumps and for constant torque load
(including special pumps requiring high starting torque). Two types of torque boosts are available: manual
and automatic.
Figure 5.4-35 Variable torque V/f pattern (F37 = 0)
re 5.4-36 Linear V/f pattern (F37 = 1)
When the variable torque V/f pattern is selected (F37 = 0 or 3), the output voltage may be low at a
low frequency zone, resulting in insufficient output torque, depending on the characteristics of the
motor and load. In such a case, it is recommended to increase the output voltage at the lo
frequency zone using the non-linear V/f pattern.
Recommended value:
H50 = 1/10 of the base frequency
H51 = 1/10 of the voltage at base frequency
Figure 5.4-37
To Next Page
Loading...
