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Moore Industries HIT Manual

4-wire/2-wire hart isolators
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HIT/HIX
May 2016
206-730-00D
®
4-Wire/2-Wire HART
Isolators

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Summary of Contents for Moore Industries HIT

  • Page 1 HIT/HIX May 2016 206-730-00D ® 4-Wire/2-Wire HART Isolators...
  • Page 2 (typically, the secondary DCS, HIT/HIX Description PLC, or ESS). The HIT is a 4‑wire unit. It can be ordered in The HIT and the HIX: configurations that draw power from either external DC or external AC sources.

  • Page 3: Specifications

    When ordering, specify: Unit / Input / Output / Power / ‑Option [Housing] Model number examples: HIX / 4‑20MA / 4‑20MA / 12‑42DC / [DIN] and HIT / 4‑20MA / 4‑20MA / 117AC / ‑RF [DIN] The Interface Solution Experts...
  • Page 4 HIT/HIX 4-wire/2-wire HART ® Isolators Dimensions Figure 1. Dimensions for Aluminum DIN-Housed HIX and HIT HART Isolators 130mm (5.1 in) 36mm 25mm 110mm (1.4 in) (1.0 in) (4.3 in) – HART SIGNAL HART ISOLATOR ISOLATOR SPAN 80mm SPAN (3.2 in)
  • Page 5 4-wire/2-wire HART Isolators ® Calibration Procedure To calibrate the HIX or the HIT, set up the equipment listed in Table 1 as shown in Figure 3 and Figure 4, as Apply the appropriate power to the unit being appropriate. calibrated.
  • Page 6 HIT/HIX 4-wire/2-wire HART ® Isolators Figure 3. Setting up to Calibrate the HIT CURRENT CURRENT CALIBRATOR CALIBRATOR OPTIONAL OPTIONAL HART HART COMMUNICATOR COMMUNICATOR – – HART HART SIGNAL SIGNAL ISOLATOR ISOLATOR Note: SPAN SPAN Please refer to Fig 2 for legacy ECD housing...

  • Page 7: Installation

    4-wire/2-wire HART Isolators ® Installation Electrical Connections The HIX and HIT housings accommodate both 32mm, Caution: DIN‑style G‑rail (EN50035) and 35mm Top Hat rail Always remove power from the loop (EN50022). Figure 1 and Figure 2 on Page 3 show before making any electrical connections.

  • Page 8: Installation Category

    The HIT does not generate hazardous voltages, the applicable EMC directive. rather, it provides a 4‑20mA current input a 4‑20mA output. Products connected to the HIT should be WARNING: designed to receive these inputs. If this unit is used in a manner not specified by...
  • Page 9 “bucking” phenomenon that can cause current skewing. By adding a HIX (or HIT) to such loops, this problem is eliminated. Figure 5. Using the HIX to “Isolate” a Secondary HART Master.
  • Page 10 HIT/HIX 4-wire/2-wire HART ® Isolators Figure 6. Connecting the HIT in an Application – 4-20mA + HART Smart HART Transmitter (Externally-powered) OPTIONAL – HART HART SIGNAL ISOLATOR COMMUNICATOR SPAN ZERO +OUT –OUT 4-20mA + HART OPTIONAL – – Primary HART...
  • Page 11 EMC standard EN61326. This configuration not only solves the bucking power supply problem. It also saves the cost of an additional supply. Figure 7. Using the HIT with TX to combat Power Supply Bucking. – 4-20mA + HART Smart...

  • Page 12: Return Procedures

    4. Ship the equipment to the Moore Industries location nearest you. The returned equipment will be inspected and tested at the factory. A Moore Industries rep‑ resentative will contact the person designated on your documentation if more information is needed.

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