Chapter 5 Function code VFD500 high performance vector control frequency inverter user manual
P02.12
Magnetic flux brake gain
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.
1.00
★
P02.13
Delaying frequency at
stop
0.00Hz
~
20.00Hz
0.50Hz
★
P02.14
Delaying time at stop
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
0.000s
★
P02.15
The minimum blocking
time after free stop
0.010s
~
30.000s
Depend
★
P02.16
Speed tracking mode
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
1
:
search on the other direction when failed
for given frequency tracking
00
★
P02.17
Deceleration time for
speed search
0.1s
~
20.0s
2.0s
★
P02.18
Current for speed search 10%
~
150% motor rated current
40%
★
P02.19
Speed search
compensation factor
0.00
~
10.00
1.00
★
Function
code
Parameter name
Description
Default
Property
52