GESTRA LRG 16-40, Оригинальная инструкция по установке

Страница: 20 / 32

20
Assignment of sensor connectors
Wiring
– continued –
Key
1
Screen
2
Voltage supply
24 V DC+ (red)
3
Voltage supply
24 V DC– (black)
4
CAN Data line C
H
(white)
5
CAN Data line C
L
(blue)
6
Terminating resistor
120 Ω at end of Bus
line
Fig. 11
Wiring diagram for CAN Bus system (example)
Attention
n
Wire equipment in series. Star-type wiring is not permitted!
n
Connect the screen of the bus line to pin 1,
Fig. 10
.
n
Connect screens of bus lines such that electrical continuity is ensured and connect
them to the central earthing point (CEP) in the control cabinet.
n
If equipotential bonding currents (outdoor installations) are to be expected, disconnect
the screens from the central earthing point.
n
If two or more system components are connected in a CAN bus network, the first and
the last devices must be provided with a terminating resistor 120 Ω (electrode pin 4:
C
H ,
pin 5: C
L
; control unit terminal 2: C
L
, terminal 4: C
H
)
n
The CAN bus data line must not be interrupted during operation.
In the event of an interruption an alarm message will be generated.
Fig. 10
3 1 4 4 5 1 2 2 5 3 6 6
120 Ω 120 Ω
RES 2
CEP
Central
earthing
point
NRS, NRR,
LRR, TRS,
URB 1 URB 2
NRG, LRG,
EF, URZ TRV
RES 1