Dimensioning Power Supply And Regenerative Units; Appendix A - KEB Combivert R6 Instruction Manual

Appendix

Appendix A

A.1

Dimensioning power supply and regenerative units

Dimensioning of the power supply and
regenerative unit
Only
regeneration ?
Yes
Decoupling R6-S (see 4.4.3 to 4.4.5)
Acquire:
P , P , t1, T, η
M Mmax M,
Calculate:
I , I
LG LGmax
I > I
DCmax LGmax
Yes
T < 300 s
no
t1 > 60 s
no
I > I
DC LG
Yes
Regenerative unit capable
PM Mechanical power
PMmax Max. mechanical power
t1 Overload time
t Last cycle
n Number of R6-S
GB - 44
no
Acquire:
C
ZK_all
η η
G, FU
Choose bigger unit or parallel
processing of R6-S
(n • IDC, n • IDCmax)
no
Yes
Yes
no
η
M
ηG
ηFU
ILM
ILMmax
C
ZK_all >
P , P
M Mmax
Calculate:
I
DCmax
Calculate:
I
DCmax
Power supply / regenerative unit capable
Motor efficiency
Gearbox efficiency
Inverter efficiency
DC load motoric current
Max. DC load motoric current
Yes
C
ZK_max
no
Acquire:
, t1, T, η η η
M, G, FU
I , I
LM LMmax
Choose bigger unit or parallel processing of
(n • IDC, n • IDCmax)
no
> I
LMmax
Yes
Yes
T < 300 s
no
Yes
t1 > 60 s
no
no
I > I
DC LM
Yes
I , I
LG LGmax
Choose bigger unit or parallel processing of
(n • IDC, n • IDCmax)
no
> I
LGmax
Yes
no
I > I
DC LG
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 frequency in-
verters
CZK_max Max. connecting capacity R6-S
Bridgeover ext. load-shunt
with contactor (special
unit)
R6-S
R6-S