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Rosemount 5300 Series with HART® to Modbus® Converter
May 2016
Reference Manual
00809-0100-4530, Rev DD
378
Rosemount 5300 Series with HART® to Modbus® Converter
J.5
Electrical installation
Note
For general electrical installation requirements, including grounding requirements, refer to
“Electrical Installation” on page 65
To connect the Rosemount 5300 Series:
1.
Disconnect/shut off the electrical power to transmitter head and then open the
instrument cover. Do not remove the cover in an explosive atmosphere with a live
circuit.
2.
Pull the cable through the cable gland/conduit. For the RS-485 bus, use shielded
twisted pair wiring, preferably with an impedance of 120
(typically 24 AWG) in
order to comply with the EIA-485 standard and EMC regulations. The maximum
cable length is 4000 ft/1200 m.
3.
Make sure that the transmitter housing is grounded, then connect wires according
to
. Connect the lead that originates from the “A” line from
the RS-485 bus to the terminal marked MB, and the lead that originates from the
“B” line to the terminal marked MA.
4.
If it is the last transmitter on the bus, connect the 120
termination resistor.
5.
Connect the leads from the positive side of the power supply to the terminal
marked POWER +, and the leads from the negative side of the power supply to the
terminal marked POWER -. The power supply cables must be suitable for the supply
voltage and ambient temperature, and approved for use in hazardous areas, where
applicable.
6.
Attach and tighten the housing cover. Tighten the cable gland, then plug and seal
any unused terminals, and connect the power supply.
Содержание 5300 Series
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