GESTRA NRR 2-60, Оригинальное руководство по установке и эксплуатации

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21 NRR 2-60 - Installation & Operating Manual -
819693-00
Wiring diagram of CAN bus system
Important notes on connecting the CAN bus system
■ ■
A dedicated 24 V DC SELV power supply unit that is isolated from connected loads must be used to
supply the SPECTOR
connect system.
■ ■
Make sure wiring is in line, not in a star!
■ ■
Use a central earth to prevent differences in potential in system parts.
■ ◆
Connect the bus line shields to one another all the way along, and connect to the central earthing
point (CEP).
■ ■
If two or more system components are connected in a CAN bus network, a 120 Ω terminating resistor
must be connected to the
first and last units between terminals C
L
/C
H
.
■ ■
The NRR 2-60 level controller is equipped with an internal terminating resistor.
To activate the internal terminating resistor in the NRR 2-60 level controller, insert a bridge between
the terminals (“Option” and “CH”).
■ ■
The CAN bus network must not be interrupted during operation!
If it is, an alarm is triggered.
Example
5
Shield
3
3
5 5
120 Ω
CH
CL
120 Ω
CH
CL
S
+ 24 V
- 0 V
CH
CL
S
CL
-
CH
+ 24 V
S
+ 24 V
- 0 V
CH
CL
S
+ 24 V
- 0 V
CH
CL
S
+ 24 V
- 0 V
CH
CL
S
CH CH CH CH CL CL CL CL
S S S S
+ + +
– – – –
+
24V DC
24 V DC
100 - 240 V AC
120 Ω
2
7
+ 24 V
CL
CH
-
0 V
+
+
-
–
C
H
C
L
Option
Fig. 9
URB URS, NRR, LRR,
URW
NRG, LRG, TRV NRG, LRG,TRV
CH = CAN High
CL = CAN Low
S = Shield
Terminating
resistor