Dc Link / Braking Transistor Function; Dc Link / Braking Transistor Function Of The Peak Power Devices; Figure 5: Block Diagram Of The Energy Flow; Table 18: Dc Link / Braking Transistor Function Of The Peak Power Devices - KEB COMBIVERT F6 Series Instructions For Use Manual

GENERAL ELECTRICAL DATA

3.3.2 DC link / braking transistor function

NOTICE
I
IN
Net
Figure 5: Block diagram of the energy flow

3.3.2.1 DC link / braking transistor function of the Peak Power devices

Device size
Rated DC link voltage
@ U = 400 V
N
Rated DC link voltage
@ U = 480 V
N_UL
DC link voltage working voltage range
DC switch-off level "Error underpotential"
DC switch-off level "Error overpotential"
DC switch-off level braking resistor
Max. braking current
Min. braking resistor value
Braking transistor
Protection function for braking transistor
DC link capacity
Table 18: DC link / braking transistor function of the Peak Power devices
The DC switching level for the braking transistor is adjustable. The default value is the value specified in the
1)
table.
The cyclic duration factor is additionally limited by the used braking resistor.
2)
40
Destruction of the drive controller if the value falls below the
minimum brake resistance value
► The minimum brake resistance value must not fall below!
DC link
Rectifier
Braking
transistor
Braking
resistor
U
U
U
U
U
U
1)
I
B_max
R
2)
C / µF
Inverter
I
B
/ V
N_dc
/ V
N_dc_UL
/ V
IN_dc
/ V
UP
/ V
OP
/ V
B
/ A
/ Ω
B_min
Max. cycle time: 120 s; ED: 50 %
No protection function available
I
N
Motor
16
565
680
390...780
240
840
780
47
18
1230