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If the rack is delivered in a cabinet by Honeywell Marine, connecting points 1, 2 and 4 are
pre-wired.
1
Connect the supply cable 24 Vdc to the terminal block, respecting the polarity.
WARNING : The TA3840C is powered by 24 Vdc.
2
Plug in and secure the DB9 cable of interconnection between racks (transmitter BUS to TA3840S
rack).
Plug in and lock the ribbon cable(s) of the 4-20 mA analog inputs, On/Off inputs, On/Off outputs,
3
respecting the numerical order (1 to 24 first).
Connect wire of each transmitter channel on the connecting block.
Note: in order to respect the wire identification, refer to the I/0 list of the manufacturer file.
The corresponding analog inputs board must be configured according to the
transmitter type (2 or 3 wires). Refer to "Configuration of the boards" chapter.
If the number of analog inputs is higher than 96, connect the 2 wires cable from the TA3840C A/D
4
rack including the additional 4-20 mA analog inputs (RS485 transmitter BUS extension), respecting
the identification of A and B wires.
Connect the 1 and 2 monitoring ports ensuring the link to the cargo monitoring system or loading
5
system (MODBUS output).
According to the connection type:
●
RS232 Þ plug in and secure the DB9 cable,
●
RS422 Þ connect the cable, respecting the identification of TxA, TxB, RxA and RxB wires,
Doc No: MI5008E – Revision 7 – ENG
Data Processing Racks
TA3840 Installation Manual
8
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