User Manual
EM303B General Purpose Inverter
108
No.
Function
Range
Unit Default Type
F3-24
DC Brake Start Frequency at Stop 0.10
~
60.00/0.1
~
60.0
Hz
2.00
〇
F3-25
DC Brake Proportion at Stop
0.00
~
30.00,
30.01
~
250.00
%
100.00
〇
F3-26
DC Brake Waiting Time at Stop
0.10
~
30.00
0~15 kW
S
0.40
〇
15~110 kW
0.70
110~400
kW
1.00
F3-27
DC Brake Time at Stop
0.00
~
30.00
S
0.00
〇
F3-24
Set the frequency for starting DC brake in the process of ramp-to-stop. Once the
output frequency is lower than this frequency in the process of ramp-to-stop, if DC brake
time≠0, then DC brake is enabled at stop.
F3-25
Different setting values can define different DC brake torques at stop.
If F3-25≤30.00, the percentage base is the rated output voltage of inverter. While, the DC
brake controls the DC voltage generated by motor windings.
If F3-25≥30.01, the percentage base is the rated output current of inverter Model G.
While, the DC brake controls the DC current generated by motor windings.
F3-26
when DC brake command given by the terminal is active at stop or the output
frequency reaches the setting value of F3
-
24 in the process of ramp-to-stop. DC brake
enabled after the time set by F3-26 is up.
F3-27
Set DC brake time at stop. If F3-27=0.00, the DC brake is disabled at stop.
If there is a DC brake signal of external terminal at stop, then the DC brake time at stop
takes the greater between the active time of the DC brake signal of external terminal at
stop and the setting time of F3-27.
The process of DC brake at stop is as shown in Figure 7-11.
1.
For heavy load, regular deceleration cannot stop motor fully due to inertia, and
motor could be stopped by prolonging the DC brake time or increasing DC brake
current at stop.
2.
For potential energy load, DC brake current control mode cannot be applied due to the
rising time of current.