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200n system layout
The 200N system controls up to 130 circuits
of heat-tracing. RMM2 (remote monitoring
module) units collect temperature inputs,
and RMC (remote module for control) units
switch power contactors on and off. RMM2s
and RMCs are connected to the 200N central
control and monitoring unit via a single
RS-485 network.
remote module for Control (rmC) assembly
Network processor (marked 750-312)
1
2
3
4
5
Digital inputs module (marked 750-400)
1
2
3
4
5
6
Contactor coil voltage supply
2
4
5
6
7
3
module (marked 750-612)
2-channel relay output module(s)
3
4
5
6
7
8
(marked 750-512) [not included,
up to 20 modules allowed]
End termination module
4
5
6
8
9
7
(marked 750-600)
DIN 35 rail [not included]
5
6
7
8
9
10
Address switches
6
8
9
10
11
7
RS-485 ribbon cable
7
8
9
10
11
RS-485 network connection module
8
9
10
11
24 Vdc power supply (such as
9
10
11
RMC-PS24) [not included]
Ground (earth) terminal block
10
11
6
7
8
9
10
11
7
8
9
10
11
11
8
9
10
11
9
10
11
10
11
11
200N
RMC
Contactors
RTD
or SCRs
(Pt 100)
10
9
8
– – +
DC
OK
OUT DC 24V 2A
22,5-28,5
V DC
DC
OK
2
4
6
8
Address x 1
IN AC 100-240V
L(+) NC NC N (–)
1
3
5
7
9
7
x 10
RS-485 network
Heat tracing circuits
1
2 3 4
V IN
15 16
ON
TxD
RxD
D1 D2
L
L
L
CRC
24V 0V
L
IO/RN
D1 D2
IO/ER
N
N
N
N
750-400 750-612
750-512
750-512 750-600
RMM2
4 5
L
N
6
3
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