KEB Combivert R6 Instruction Manual page 29

Connect the Power Unit
DR3 Mains choke for inverter input
2)
F1...F3 Mains fuse type gR
F4
10 A fuse gG/gL
F5 DC fuses type aR (see technical data)
F6, F7 DC fuses type aR/gR
G1, G2 Regenerative unit COMBIVERT R6-S
X1A
Power circuit terminals
X1B
Connection for precharging and switching-on of line contactor K1, K3
X2A
Control terminal strip (X2A.12: control release; X2A.17: voltage output)
X2B
Connection for synchronization line
X2C
Activation of the self-holding of the load shunt relay (K2 internal)
G3, G4 Frequency inverter with DC voltage input
H Supply of the signalling device
H1 Error message contactor K1 not dropped
H2 Error message contactor K2 not dropped
HF1,
HF2, EMI filter
HF3
K1, K3 Line contactor with auxiliary contacts
K4 Line contactor with auxiliary contacts
M Motor
S2, S3 Control release; in series with line contactor K1
1)
In case of parallel connection of R6‑S the total power can be smaller up to 10 % caused by production tole‑
rances of the commutation reactors. The impedance voltages uk of the commutation reactors must be the
same in case of parallel connection of R6‑S with different sizes. Specify the major unit as master.
2) Parallel connection of the frequency inverter and R6‑S causes a circulating current in regenerative operation.
It is depending on the inductance of the mains choke. The entire regenerative power is 75... 90 % of the R6‑S
regenerative power.
The cable cross section as well as the DC fuses (see chapter 2.1) must be dimensi-
oned to the DC rated current of the load (see technical data of the inverter).
GB - 29