Sensia QRATE Scanner 3300, Инструкция по установке, эксплуатации и обслуживанию

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Section 3 - Wiring the QRATE Scanner 3300 Integrated Control
Flow Computer
Field Wiring Connections
CAUTION All field wiring must conform to the National Electrical Code, NFPA 70, Article 501-4(b) for installa-
tions within the United States or the Canadian Electric Code for installations within Canada. Local
wiring ordinances may also apply. All field wiring must be rated for temperatures of 90 ° C or higher,
and have a wire range of 22 to 14 AWG. Terminal block screws must be tightened to a minimum
torque of 5 to 7 in-lb. (0.57 to 0.79 joules) to secure the wiring within the terminal block. Only per-
sonnel who are experienced with field wiring should perform these procedures.
!
WARNING: All cable and cable glands must be rated for 80ºC.
To wire the QRATE Scanner 3300 for operation, complete the following field connections:
1. The terminal board is at the rear of the enclosure. All wiring connections can be made to this board. Wire in accor -
dance with the wiring diagrams shown on page 51 through page 59 . See Figure 3.1 for help in locating the
terminals by number.
Figure 3.1 - Terminal board illustration with numbered terminals
2. Complete wiring of the terminal board as follows:
a. Connect wiring for external power to POWER (Terminals 34 and 35), if desired.
b. If the device is externally powered, route the protective earth grounding conductor to the enclosure with the
incoming power conductors and terminate it to a screw on the side of the enclosure ( Figure 3.2 ) .
Grounding screws
Figure 3.2 - External ground screw locations
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QRATE Scanner 3300 integrated control flow computer Section 3