MODEL TCL

SECTION 4

 

WIRING

4.3 MAKE POWER, ALARM, OUTPUT, AND SENSOR CONNECTIONS IN THE ANALYZER

WARNING

RISK OF ELECTRICAL SHOCK

Electrical installation must be in accordance with the National Electrical Code (ANSI/NFPA-70) and/or any other applicable national or local code.

4.3.1 Power

Wire AC mains power to the power supply board, which is mounted vertically on the left hand side of the analyzer enclosure. The power connector is at the top of the board. Unplug the connector from the board and wire the power cable to it. Lead connections are marked on the connector. (L is live or hot; N is neutral, the ground connection has the standard symbol.)

AC power wiring should be 14 gauge or greater. Run the power wiring through the conduit opening nearest the power terminal. 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.

CAUTION

If your 1056 analyzer does not have alarm relays (options -270, -271, or -272) you must set the black and red AC power switch located below the power terminal to the correct AC voltage. The analyzer is shipped with the switch in the 230 VAC position. For operation at 110-120 VAC, slide the switch upward so that 115 VAC is showing.

If your 1056 analyzer has alarm relays (options -273, -274, or -275) there is no switch setting to make. The analyzer automatically detects the AC voltage.

4.3.2 Analog output wiring

Two analog current outputs are located on the main circuit board, which is attached to the inside of the enclosure door. Figure 4-3 shows the location of the terminals. The connectors can be detached for wiring. TB-1 is output 1. TB-2 is output 2. Polarity is marked on the circuit board.

For best EMI/RFI protection, use shielded output signal cable enclosed in earth-grounded metal conduit.

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

FIGURE 4-2. Analog output connections. The analog outputs are on the main board near the hinged end of the enclosure door.

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Emerson TCL instruction manual Power, Analog output wiring
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TCL specifications

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