Regenerative Operation At Parallel Operation Of Up To Three R6-S With Decoupling Diodes - KEB COMBIVERT R6-S Instruction Manual

6.4.4 Regenerative operation at parallel operation of up to three R6-S with decoupling di-
odes
(Parallel operation with an error at current sharing of the R6-S units of ≤10 %)
L2 L1
PE N L3
F4
F1
F2
F3
PE N L3 L2 L1
When connecting the units absolutely pay attention to correct phasing ! The external precharging is
to be made within 10 s !
A load draw from the DC circuit may be done only if relay 1 is active (ready signal). This can be
guaranteed by a series connection of the relay of the R6 units with the control release of the con-
nected inverters (see next side GB-24).
In case of failure the contactors must disconnect the units from the supply system.
If the precharging due to the internal capacity of the R6 about 19.2 mF can not be done with the
inverter, use the interconnection of 4.4.3. The line contactor may be connected only after the pre-
charging of R6.
A1 Synchronization unit (max. length of the phase lines 1 m)
K4
13 14
21 22
H
H1
13 14
K1
A1
A2
22
21
K3 S2
43 44 33 34
A1
L3
X2D
L2
X2C
L1
X2B
HF1 DR1
L1.1
L1 L1'
L2 L2' L2.1
L3 L3'
L3.1
H2
13 14
K3
A1
A2
21 22
K1 S3
43 44 33 34
HF2 DR2
L1 L1' L1.1
L2 L2' L2.1
L3 L3' L3.1
K4
DR3
L1.1
L1.2
L2.1
L2.2
L3.1
L3.2
Connection Power Unit R6-S
L1 L2
X1B
X1B
14/K2
13/K2
G1
25
X2C
24
12
X2A
17
D1
X2B
D2
++
L1.2 L1.2
X1A
L2.2 L2.2
D3
- -
L3.2 L3.2
D4
F5
L1 L2
X1B
X1B
14/K2
13/K2
G2
25
X2C
24
12
X2A
17
F5
X2B
D5
- -
L1.2 L1.2
D6
X1A
L2.2 L2.2
++
L3.2 L3.2
D7
HF3
D8
L1 L1'
L2 L2'
L3 L3'
F6
F7
L1L2 L3
further on next side
GB - 85