Dc Link / Braking Transistor Function Gtr7; Figure 3: Block Diagram Of The Energy Flow; Table 20: Dc Link / Braking Transistor Function Of The 400 V Units - KEB COMBIVERT F6 Instructions For Use Manual

UNIT DATA OF THe 400V UNITS

3.2.7 Dc link / braking transistor function GTr7

Inverter size
DC link rated voltage @ U
DC link rated voltage @ U
DC link voltage working voltage range
DC switch-off level „ERROR under potential"
DC switch-off level „ERROR overpotential"
Rated current @ U = 565 V
IN_dc
Rated current @ U = 680 V
IN_dc
Rated current @ U = 565 V
Out_dc
Rated current @ U = 680 V
Out_dc
DC switch-off level braking resistor
Max. braking current
Min. brake resistance value
Protection function for braking transistor (GTR7)
Table 20: DC link / braking transistor function of the 400 V units
1) The DC switching level for the braking transistor is adjustable. The default value is the value spec-
ified in the table.
ATTENTION
I
in
Net
Figure 3: Block diagram of the energy flow
ATTENTION
36
Activation of the braking transistor function
In order to use the braking transistor (GTR7), the function must be activated
with parameter "is30 braking transistor function".
For more information => F6 Programming manual
= 400V
N_ac
= 480V
N_UL_ac
Destruction of the drive converter if the value falls below the mini-
mum brake resistance value
► The minimum brake resistance value must not fall below!
DC link
Rectifier
GTR7
I
Out_dc
Braking
DC Out
resistor
Destruction of the drive converter
► If the error "ERROR GTR7 always ON" occurs, the drive converter
must be disconnected from the mains within 5 minutes!
21
U / V
N_dc
U / V
N_UL_dc
/ V
U
IN_dc
U / V
UP
U / V
OP
I / A 121
IN_dc
I / A 104
IN_UL_dc
I / A 121
Out_dc
I / A 104
Out_dc_UL
/ V
U
1)
B
I / A
B_max
R / Ω
B_min
Short-circuit monitoring
Converter
I
I
B
in_dc
DC in
22 23 24
565
680
390...780
240
840
155 190 228
129 157 198
155 190 228
129 157 198
780
168
5
I
N
Motor