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Electrical Installation
November 2017
4. Remove approximately 4-in. (100 mm) of the cable mantle and strip approximately 0.4-in. (10 mm)
off the edge of each conductor.
5. Loosen the terminal block screws located inside the Rosemount 5708 head.
Note
The two terminal blocks can be pulled out by unfastening the two side screws to allow for easier wiring
into the terminals. When inserting the terminal blocks back into the head, it is advised to fasten the
screws back into the electronics card in order to avoid a loose connection and or operational problems.
6. Connect the cable wires according to the wiring diagram. See
page 29
Note
When connecting the last Rosemount 5708 in the chain, a 120 Ohm resistor must be connected as well.
See
Figure 4-6 on page
In any installation of the 5708 whether it is a single unit on a silo or multiple units, it is mandatory to use
termination resistors at the ends of the daisy-chain connection.
One resistor must be on the last scanner on the chain (connected to the +/- terminals of the RS485 and
the other resistor on the other end of the line before converting the RS485 bus to a different
communication protocol such as USB, TCP/IP and others.
26
for different connection methods.
31.
0.4-in.
(10 mm)
4-in. (100 mm)
"Different connection methods" on
Reference Manual
00809-0100-4570, Rev DA
Electrical Installation
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