Modbus
Cable type Individually screened 2 pair data cable, 24AWG, low capacitance, low smoke halogen free.
Outer diameter 7mm (max)
To prevent signal crosstalk OMD cables should be segregated from high voltage cables and
follow good installation practice
Please Note: The Remote Display Unit Modbus data cable should NOT be connected when the
power is applied to the unit.
Suggested cables:
FS Cables 2402PIFFH
Beldon 9729
Helkama RFE-HF(i) 2x2x0.75
Jinro 60V RCOP(IS)
The above cable should be used to connect between the control unit and either the ships AMS system
or the Remote Display Unit
The Modbus connection to the Remote Display Unit may be made using the pre-terminated 5m cable, 1-
43682-K297. The cable may be extended to provide the required length to the Control Unit.
Refer Figure 21, Figure 22 and Figure 23 for cable extension methods
Alternatively, a single length of cable may be used between the Control Unit and the Remote Display
Unit. Using this method, the cable must be terminated in using a 9 pin D type connector + IP65 shell, 1-
27400-K305.
Refer Figure 19 for Modbus Connector Wiring Drawing.
Refer Figure 20 for connector location.
Figure 19 Modbus Connector Wiring Drawing
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