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Download DL8000 Preset Controller Instruction Manual
Transcript
DL8000 Preset Instruction Manual 2.7 Electrical Installation 7B Caution Shut off all sources of AC and DC power to the loading island site before installing the DL8000. 2.7.1 General Considerations 20B Use any of three cable entries located on the bottom of the housing for wiring access to the DL8000. Caution A threaded 25.4 mm (1-inch) female NPSM connection on the left side of the unit (for AC power and control / status signals). A spare threaded 25.4 mm (1-inch) female NPSM connection on the right side of the unit (may be used for meter pulse wiring to segregate meter pulse wiring from all other signals). A threaded 50 mm (2-inch) female NPSM connection for DC cabling and low voltage level signals in the center. Seal all cable entries within 50 mm (2 inches) of the enclosure with suitable sealing or potting compound. 2.7.2 Field Wiring Installation Guidelines: 21B Revised Mar-12 Route external AC and DC wiring in separate conduits. Record cable and wire routing and interconnection information to simplify the creation of as-built documentation for the system. Provide remote circuit breakers and optional disconnect switches for all AC and DC power input circuits. Follow power and signal field wiring grounding standards. Use only stranded copper wire, equal to or of larger gauges as indicated on the basic wiring diagrams located at the rear of this section. Take care not to cut or weaken wire strands during the removal of insulation. Clearly mark all wire ends with slip-on wire tags or similar devices. Preferably, color-code the wire tags to indicate the voltage level and mark tags with the specific signal name. Cut power and signal wires with an additional length of approximately 50 mm (2 inches) for service loops to allow terminal board and connector removal. Position all wiring within the unit to avoid unnecessary crimping and overcrowding and to insure proper clearance for the instrument door and hinges. Installation and Use 2-17
