Emerson Rosemount Clarity II T56, Reference Manual

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3.1.4 Alarm relays
Emerson supplies four alarm relays with the switching power supply (85 to 264 Vac, 03
order code) and the 24 Vdc power supply (20 - 30 Vdc, 02 order code). You can use all
relays for process measurement(s) or temperature. You can also configure any relay as a
fault alarm instead of a process alarm. In addition, you may configure any relay
independently and program it to activate pumps or control valves.
All process alarms, alarm logic (high or low activation or USP*), and deadband are user-
programmable. Customer-defined failsafe operation is supported as a programmable
menu function to allow all relays to be energized or not energized as a default condition
upon powering the transmitter. You may program the USP* alarm to activate when the
conductivity is within a user-selectable percentage of the limit. USP* alarming is available
only when a contacting conductivity measurement board is installed.
3.2 Prepare conduit openings
The transmitter enclosure has six conduit openings. Four conduit openings are fitted with
conduit plugs.
Conduit openings accept ½ -in. conduit fittings or PG 13.5 cable glands. To keep the case
watertight, 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 transmitter.
3.3 Prepare sensor cable
The Rosemount T56 is intended for use with all Rosemount sensors. Refer to the sensor
installation instructions for details on preparing sensor cables.
3.4 Power, output, and sensor connections
3.4.1 Power wiring
Emerson offers two power supplies for the Rosemount T56:
1. 24 Vdc (20-30 V) power supply (02 ordering code)
2. 85-265 Vac switching power supply (03 ordering code)
AC mains (115 or 230 V) leads and 24 Vdc 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
marked clearly 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 to 265 Vac) power
supplyu. 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.
Wire Reference Manual
July 2020 00809-0100-3565
26 Emerson.com/Rosemount