KEB COMBIVERT S6 User Manual

3.3.7 DC link / braking transistor function
Unit size 12 13 14
DC link rated voltage @ U
N = 400 V UN_dc / V 565
DC link rated voltage @ U
N = 480 V UN_dc_UL / V 672
DC link voltage working voltage range U
in_dc / V 260...750 ±0
DC switch-off level „Error! Underpotential“ U
UP_dc / V 240
DC switch-off level „Error! Overpotential“ U
OP_dc / V 840
Rated current DC
@ Uin_dc = 565 V Iin_dc / A 16 20 26
Rated current DC @ U
in_dc = 680 V Iin_dc_UL / A 13 19 22
Rated current DC
@ Uout_dc = 565 V Iout_max_dc / A 16 20 26
Rated current DC
@ Uout_dc = 680 V Iout_max_dc_UL / A 13 19 22
DC switching level braking resistor
1)
UB_dc / V 780
Max. braking current I
Bmax / A 28 34 34
Min. brake resistance value R
Bmin /Ω 33 25 25
DC link capacity C / uF 470 560 680
Protection function for braking transistor (GTR7)
2)
—
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-
ied in the table.
2)
No protective function, => “Wiring of an intrinsically safe braking resistor”.
NOTICE
Destruction of the drive converter if the value has fallen below the
minimum brake resistance value
► The minimum brake resistance value must not fall below!
Net
Rectier
DC link
Inverter
Braking
transistor
(GTR7)
Motor
DC Out
Braking
resistor
DC in
I
in IN
Iout_dc IB
Iin_dc
Figure 7: Block diagram of the energy ow
Activation of the braking transistor function
The function must be activated with parameter "is30 braking transistor func-
tion" in order to use the braking transistor (GTR7).
Further information can be found in the download area of www.keb.de under
the search term „S6 Programming Manual“.
37
UNIT DATA

KEB COMBIVERT S6 Specifications

General

Brand	KEB
Model	COMBIVERT S6
Category	Servo Drives
Language	English