Rittal SK 3209. Series, Руководство по сборке и эксплуатации

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4 Assembly and connection
Rittal air/water heat exchanger assembly instructions 13
EN
4.7 Carrying out the electrical installation
4.7.1 Bus connection
(only when interconnecting several units
with a Comfort controller)
When using several air/water heat exchangers, the
serial unit interface can be used to connect up to
ten air/water heat exchangers with the bus cable
(Model No. SK 3124.100).
When interconnecting, please note the following:
– De-energise the air/water heat exchangers to
be connected.
– Ensure proper electrical insulation.
– Make sure the cables are not laid in parallel
to power lines.
– Make sure that the lines are short.
Fig. 12: Connection example: Master-slave operation
Legend
1 Serial interface
2 Serial interface cable
3 Master-slave bus cable (Model No. SK 3124.100)
RTT Rittal TopTherm air/water heat exchanger
X1
Supply connection/door limit switch/alarms
X2 Master-slave connection Sub-D, 9-pole
X3 Serial interface Sub-D, 9-pole
St. Sub-D connector, 9-pole
Bu. Sub-D jack, 9-pole
Adr. Address
Note:
The electrical signals at the X2 interface are
of an extra-low voltage (not extra-low safety
voltages in accordance with EN 60 335).
X2
CMC
RTT
Master Adr.: 09
X1
X2 X3
X1
X2 X3
X1
X2 X3
X1
X2 X3
X2 X3 X2 X2
X2 X2
X2
X2
St. St. St. Bu.
St. Bu.
X2
Adr.: 11 Adr.: 12 RTT
Slave RTT
Slave Adr.: 19 RTT
Slave
St. Bu.
St.
Bu.
3
2
1