Lenze E82xVxxxKxxxxx - Manual (Page 480)

DC−bus operation
Distributed supply (several supply points)
12
l
480 EDS82EV903−3.0
12.8 Distributed supply (several supply points)
The controller DC bus is supplied through +U
DC
, −U
DC
via several controllers connected to
the mains in parallel. A 400 V mains can use one additional regenerative power supply unit.
Basic circuit diagram
K1
K1
L3
N
PE
L1
L2
U V W
M
3~
L1 L2 L3
F1
+UG -UG
RB
J
+UG -UG RB2 RB1
Z1
X1
RB
K1
F4
ON
OFF
28 xx
K1
CINH
F2 F3
Z4
U V W
M
3~
L1 L2 L3 +UG -UG
Z1
X2
28
K1
CINH
S1
S2
S1 S2
F5
xx
A1 A2 Z3
+ +
+ +
+ +
+ +
8200vec657
Fig. 12−5 Network of three−phase connected controllers with decentralised supply and additional braking unit
A1, A2 230 V controller 8200 vector or
400 V controller 8200 vector / 8400 / 9300
Z1 Mains filter( ¶ 465)
Z3 Braking unit 935x
Z4 Brake resistor
F1, F2, F3 Mains fuses ( ¶ 467)
F4, F5 Fuses on DC level ( ¶ 470)
K1 Mains contactor
(
Stop!
935x braking units must only be operated with the assigned Lenze brake
resistors because these have an integrated temperature monitoring function.
Otherwise the brake resistors may be destroyed.
)
Note!
When operated at 400 V mains, 934X regenerative power supply modules can
be used instead of the braking unit. Advantage: Low heat generation during
operation in generator mode.