Emerson PN-51-T56 Preparing Conduit Openings, Preparing Sensor Cable, Power wiring

Instruction Manual	Clarity II T56
PN-51-T56	May 2012

3.2Preparing Conduit Openings

There are six conduit openings in all configurations of T56. (Note that four of the openings will be fitted with plugs upon shipment.)

Conduit openings accept 1/2-inch conduit fittings or PG13.5 cable glands. To keep the case water- tight, block unused openings with NEMA 4X or IP65 conduit plugs.

NOTE:

Use watertight fittings and hubs that comply with your requirements. Connect the conduit hub to the conduit before attaching the fitting to the analyzer.

3.3Preparing Sensor Cable

The T56 is intended for use with all Rosemount Analytical sensors. Refer to the sensor installation instructions for details on preparing sensor cables.

3.4Power, Output, and Sensor Connections

3.4.1Power wiring

Two Power Supplies are offered for the T56:

a.24VDC (20 – 30V) Power Supply (-02 ordering code)

b.85 – 265 VAC Switching Power Supply (-03 ordering code)

AC mains leads and 24VDC leads are wired to the Power Supply board which is mounted vertically on the left side of the main enclosure cavity. Each lead location is clearly marked on the Power Supply board. Wire the power leads to the Power Supply board using the lead markings on the board.

The grounding plate is connected to the earth terminal of the -03 (85-265VAC) power supply. The green colored screws on the grounding plate are intended for connection to some sensors to minimize radio frequency interference. The green screws are not intended to be used for safety purposes.

3.4.2Current output wiring

All instruments are shipped with four 4-20mA current outputs. Wiring locations for the outputs are on the Main board which is mounted on the hinged door of the instrument. Wire the output leads to the correct position on the Main board using the lead markings (+/positive, -/negative) on the board. Male mating connectors are provided with each unit.

3.4.3Alarm relay wiring

Four alarm relays are supplied with the switching power supply (85 to 265VAC, -03 order code) and the 24VDC power supply (20-30VDC, -02 order code). Wire the relay leads on each of the independent relays to the correct position on the power supply board using the printed lead markings (NO/Normally Open, NC/Normally Closed, or Com/Common) on the board.

12 Wiring