KEB Combivert R6-S Instruction Manual page 32

Connection Power Unit R6-S
Regenerative inverter currents ≤ inverter current of one R6-S
(with mains-operated inverter of type B1 or B2)
1
L1
L2
L3
PE
1a
1 Mains contactor
1a Regenerative contactor
2 Mains fuses
3 Mains fuses type gR
4 Radio interference filter
1) A mains choke with uk=4 % is mandatory required for reduction of circulating currents.
2) Here alternatively the regenerative- or mains contactor can be switched first. The respective other
contactor may be connected only if the precharging in the R6-S or DC bus of the drive controllers is
completed. If the precharging of R6-S and drice controller is in the same DC branch (R6-S in E housing
and inverter type B2), a regenerative contactor is eventually not necessary (depending on the charging
resistors and the DC link capacity). Note the permissible DC link capacity of the charging circuit of the
inverter !
3) The cable cross-section may not be smaller than 10 mm². It must be dimensioned for the DC rated cur-
rent of the load. Otherwise appropriate fuses in the DC bus (10) are required. The indicated maximum
protection for the connected drive controllers must be observed !
4) Parallel connection of the drive controller and R6-S causes a circulating current in regenerative opera-
tion. It is depending on the inductance of the mains choke/ commutation reactor. The total regenerative
power is 75...90 % of the R6-S regenerative power.
5) If R6 devices without internal DC-fusing are used, fuses in accordance with annex B.1.2 must be used
to be conform according to UL. The specified fuses there refer to a maximum fusing of the R6 devices.
Lower fuse protection according to the connected inverter can be done with fuses of the same type.
Table 16:
B1 or B2)
GB - 32
5
2 4
L1 L1'
L2 L2'
L3 L3'
6
4
3
L1 L1'
L1.1
L2 L2' L2.1
L3 L3' L3.1
5 Mains choke
2)
6 Commutation reactor
2)
7 COMBIVERT R6-S
8 Decoupling diodes (see annex)
9 DC fuses type aR/gR
Regenerative inverter currents ≤ inverter current of one R6-S (inverter type
7
++
X2B X2B
++
8
L12
L1.2
L2.2 L22 - -
L3.2 L32 - -
PE
1) 4)
4)
5)
5)
10
9
-
xx xx
11
PE PE
PE
13 13
10 DC fuses type aR/gR
11 Inverter (all types)
12 Inverter (type B1, B2)
13 Motor
12
PE
3) 5)