REXROTH RD 500 Series, Applications Manual

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RD 500 RD51 Inverter Technical Data
5-13
DOK-RD500*RD51*******-IB04-EN-P
Circuit Principle of Power Section, Size Classes A and B
Ground +24 V
24 V Stand-by
power supply
X2
V2 PE
W2
U2
X83
W1 V1 X1
C D F
EW
SE
WS
K1
K2
BC
24 V
15 V
SNT
DC link
X1
WR
U1
3
1
2
VL
Stand-by
1 2 X80
+24V
4 3
M 3~
å
C1 D1 C D
U
U
J
U
J
A1/A2
V6 W6 U6
A1
GL
J
J
PE
PE
SP510004EN02.FH9
DC- link
Installation must be
inherently short-circuit-proof
ext. fuses
A1: 24 V Stand-by power supply,
Starting lock-out and Filter current
feedback
A2: 24 V Stand-by power supply and
Starting lock-out
only for special applications
Inverter control
Starting lock-
out
item
EW Ground fault transducer
GL Rectifier
K1 Main contactor
K2 Pre-charging contactor
SE Current sensing
SNT Switched-mode power supply
VL Pre-charging
WS Inverter control
WR Inverter
X80 Converter with Starting lock-out
Rectifier / Inverter / brake-
chopper
X81
only for additional
functions CF or DF
X155
at use as Motor inverter SFT,
the earth connection be
inapplicable
Fig.: 5-2 Sample connection of classes A – B when using inverter
Note: Connections C1 - C and D1 - D absolutely must be made.
Note: The leakage current compared to PE is greater than 3.5 mA.
The grounded conductor connection
is laid out for 10 mm²
(AWG 6).