3-20 | Thermox Series 2000 WDG-IV / IVC / IVCM
This wiring section shows you how to make the following connections:
• AC mains supply wiring to control unit
• AC mains supply wiring to sensor
• Control unit to sensor
• Control unit to remote calibration unit
• Control unit to alarm devices
• Control unit to current output devices
• Control unit to host computer (RS-485 communications)
In addition, this wiring section provides mandatory EMC grounding,
shielding, and noise protection requirements.
If you are considering adding option cards at a later time, such as a
combustibles card, you may want to connect the required intercon-
necting wires when you first install your analyzer, especially if run-
ning the wires over long distances through conduit.
General Wiring and Conduit Requirements
This section describes general wiring and conduit requirements.
• Sensor wiring conductors must be rated at a minimum of 80 °C. All
other wiring conductor ratings should be for the minimum tempera-
ture required for the equipment being connected to the analyzer, but
not less than 60 °C.
• Use only the applicable NEMA-approved conduit fittings or cable
fittings to maintain the NEMA rating for the Series 2000 controller
or sensor enclosure. If not using a conduit entry, leave the factory
NEMA-approved plugs intact. Never leave any holes unplugged.
• Follow all applicable electrical codes for your location.
• Follow proper grounding, shielding and noise protection practices as
described in this section.
• Use twisted-pair cable with an overall braided shield, or twisted-pair
cable in rigid metal conduit for all sensor and signal wiring.
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