Dimensioning Power Supply And Regenerative Units; Figure 19: Dimensioning Power Supply And Regenerative Units; A. Appendix A - KEB COMBIVERT R6 Instruction Manual

Appendix A
A. Appendix A
A.1

Dimensioning power supply and regenerative units

Dimensioning of the power supply
and regenerative unit
Only
regeneration ?
Decoupling R6-S (see 4.4.3 to
4.4.5)
Acquire:
PM, PMmax, t1, T, ηM, ηG, ηFI
Calculate:
ILG, ILGmax
IDCmax > ILGmax
T < 300 s
t1 > 60 s
IDC > ILG
Regenerative unit capable
PM Mechanical power
PM- Max. mechanical power
max
t1 Overload time
t Last cycle
n Number R6-S
Figure 19:
GB - 50
no
Acquire:
C
yes
select higher unit or paral-
lel connection of R6-S
(n • IDC, n • IDCmax)
no
yes
yes
no
yes
no
no
yes
η
M
ηG
ηFU
ILM
ILM-
max
Dimensioning power supply and regenerative units
CZK_all > CZK_max
ZK_all
P , P
M Mmax
Calculate: ILM, ILMmax
IDCmax > ILMmax
IDC > ILM
Calculate: ILG, ILGmax
IDCmax > ILGmax
IDC > ILG
Power supply and regenerative unit capable
Motor efficiency
Gearbox efficiency
Inverter efficiency
DC load motoric current
Max. DC load motoric
current
yes
no
Acquire:
, t1, T, η η η
M, G, FI
select higher unit or parallel con-
nection of R6-S
(n • IDC, n • IDCmax)
no
yes
yes
T < 300 s
no
yes
t1 > 60 s
no
no
yes
select higher unit or parallel con-
nection of R6-S
(n • IDC, n • IDCmax)
no
yes
no
yes
IDC DC output current R6-S
IDCmax max. DC output current
R6-S
ILG DC load regenerative current
ILGmax Max. DC load regenerative
current
CZK_all DC link capacity of all fre-
quency inverters
CZK_ max. connecting capacity
max R6-S
bridgeover ext.
load-shunt with
contactor (special
unit)