Veikong VFD500 Series User Manual page 52

Chapter 5 Function code
Function
Parameter name
code
P02.12 Magnetic flux brake gain
Delaying frequency at
P02.13
stop
P02.14 Delaying time at stop
The minimum blocking
P02.15
time after free stop
P02.16 Speed tracking mode
VFD500 high performance vector control frequency inverter user manual
Description
1.00～1.50
Over excitation braking convert some kinetic
energy to motor heating by increasing motor
excitation. value 1 means ineffective: value
higher better performance but output current
bigger
This inverter can slow down the motor
by increasing the magnetic flux. The
energy generated by the motor during
braking can be transformed into heat
energy by increasing the magnetic flux.
The inverter monitors the state of the
motor continuously even during the
magnetic flux period. So the magnetic
flux can be used in the motor stop, as
well as to change the rotation speed of
the motor. Its other advantages are:
Brake immediately after the stop
command. It does not need to wait the
magnetic flux weaken.
The cooling is better. The current of the
stator other than the rotor increases
during magnetic flux braking, while the
cooling of the stator is more effective
than the rotor.
0.00Hz～20.00Hz
0.000s～60.000s
0.000s:no function for delaying time at stop
>0.000s:it is effective, when output frequency
decrease lower than delaying frequency at stop
(P02.13),inverter will block pulse output after
delaying time at stop (P02.14).if run command
comes during delaying time, inverter will
restart.it is useful to some application with jog
function
0.010s～30.000s
Unit's digit：tracking mode
0 ： Speed tracking for maximum output
frequency
1：Speed tracking for frequency at stop
2：Speed tracking for grid frequency
Ten's digit：direction choosing
0：only search at given frequency direction
- 50-
Default Property
1.00
★
0.50Hz
★
0.000s
★
Depend
★
00
★