Emerson PN 51-1055pHC/rev.K instruction manual Section Wiring, Preparing Conduit Openings

MODEL SOLU COMP II	SECTION 3.0
	WIRING

SECTION 3.0.

WIRING

3.1PREPARING CONDUIT OPENINGS

3.2POWER, ALARM, OUTPUT, AND SENSOR CONNECTIONS

3.1PREPARING CONDUIT OPENINGS

The number of conduit openings and the location depend on the model.

Model	Description	Conduit openings
1055-10	panel mount	two open, three knockouts
1055-11	surface or pipe mount	three open, no knockouts

Conduit openings accept 1/2-inch 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 the requirements of UL514B. Connect the conduit hub to the conduit before attaching the fitting to the analyzer (UL508-

26.16).

FIGURE 3-1. Removing the Knockouts

Figure 3-1 shows how to remove the knockouts. The knockout grooves are on the outside of the case. Place the screwdriver blade on the inside of the case and align it approximately along the groove. Rap the screwdriver sharply with a hammer until the groove cracks. Move the screwdriver to an uncracked portion of the groove and continue the process until the knockout falls out. Use a small knife blade to remove the flash from the inside of the hole.

3.2 POWER, ALARM, OUTPUT, AND SENSOR CONNECTIONS

The Solu Comp II is available in two mounting configurations.The positions of the power, alarm, output, and sen- sor terminal blocks are different in each. Refer to the table to find the correct drawing.

For best EMI/RFI protection use shielded output signal cable enclosed in an earth-grounded metal conduit. Connect the shield to earth ground at termi- nal 4 on TB1.

MODEL	MOUNTING	POWER	FIGURE
1055pH-01-10	Panel	115/230 Vac	3-2
1055pH-02-10		24 Vdc	3-3
1055pH-01-11	Surface/Pipe	115/230 Vac	3-4
1055pH-02-11		24 Vdc	3-5

AC wiring should be 14 gauge or greater. Provide a switch or breaker to disconnect the analyzer from the main power supply. Install the switch or breaker near the analyzer and label it as the disconnecting device for the analyzer.

WARNING: RISK OF ELECTRICAL SHOCK

AC connections and grounding must be in compliance with UL 508 or local electrical code. DO NOT apply power to the analyzer until all electrical connections are verified and secure.

Keep sensor and output signal wiring separate from power wiring. Do not run sensor and power wiring in the same conduit or close together in a cable tray.

NOTE

For sensors without solution ground, please use the RC kit included with the instrument.

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