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Emerson Rosemount 781 Quick Start Manual

Emerson Rosemount 781 Quick Start Manual

Wireless field link
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Quick Start Guide
00825 0100-4421, Rev DC
September 2020
Emerson Wireless Field Link

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Summary of Contents for Emerson Rosemount 781

  • Page 1 Quick Start Guide 00825 0100-4421, Rev DC September 2020 Emerson Wireless Field Link...
  • Page 2: Table Of Contents

    Quick Start Guide September 2020 NOTICE This guide provides basic guidelines for the Emerson Wireless Field Link. It does not provide instructions for diagnostics, maintenance, service, or troubleshooting. This guide is also available electronically on www.Emerson.com. WARNING Failure to follow these installation guidelines could result in death or serious injury.
  • Page 3: Wireless Considerations

    Wireless considerations Power up sequence The Emerson Wireless Field Link and wireless I/O should be installed and functioning properly before the power modules are installed in any wireless field devices. Wireless field devices should also be powered up in order of proximity from the Field Link beginning with the closest.
  • Page 4 Figure 1-3: Conduit Plugs Conduit plug Intended use The Field Link must be used in conjunction with a network manager or network Gateway. The Field Link then functions as a translator between the wired network and a wireless field network. Emerson.com/Rosemount...
  • Page 5 September 2020 Quick Start Guide Figure 1-4: Example System Architecture Host system Field link Control network Wireless field network Network manager Wireless field devices Quick Start Guide...
  • Page 6: Physical Installation

    “–” terminal. 3. Connect the Data + lead to the “A (+)” terminal and the Data – lead to the “B (–)” terminal. 4. Plug and seal any unused conduit connections. 5. Replace the housing cover. Emerson.com/Rosemount...
  • Page 7 September 2020 Quick Start Guide Figure 2-2: Emerson Wireless Field Link Terminal Diagram Data A (+) Data B (–) +10.5 to 30 VDC Return Grounding The Field Link enclosure should always be grounded in accordance with national and local electrical codes. The most effective grounding method is a direct connection to earth ground with minimal impedance.
  • Page 8: Verify Operation

    2. Percent Range Screen 3. Wired Interface Usage 4. Radio Interface Usage The Field Link will continue to rotate through each periodic screen through the course of normal operation. If any diagnostic or fault condition occurs, a corresponding diagnostics screen will appear. Emerson.com/Rosemount...
  • Page 9: Reference Information

    Reference information Figure 4-1: Emerson Wireless Field Link Terminal Diagram Data A (+) Data B (–) +10.5 to 30 VDC Return Note The Emerson Wireless Field Link requires separate twisted shield pairs (four wires) for power and data. Quick Start Guide...
  • Page 10 Quick Start Guide September 2020 Figure 4-2: Emerson Wireless Field Link Dimensional Drawing 90° 12.43 (316) 10.91 5.21 (277) 3.55 (132) 3.55 (90.17) 4.20 (90.17) (107) 5.51 5.51 (140) (140) 2x Conduit plug Possible antenna rotation shown Extended range antenna ®...
  • Page 11: Ordering Information

    September 2020 Quick Start Guide Ordering information Table 5-1: Emerson Wireless Field Link The Standard offering represents the most common options. The starred options (★) should be selected for best delivery. The expanded offering is subject to additional delivery lead time.
  • Page 12 Quick Start Guide September 2020 Table 5-1: Emerson Wireless Field Link (continued) Options (Include with selected model number) Meter ★ LCD display Gland and connector options Cable gland (7,5 – 11,9 mm) Thin wire cable gland (3 – 8 mm) Typical model number: 781 A1 D 1 KL WA3 WK3 M5 Emerson.com/Rosemount...
  • Page 13: Product Certifications

    A copy of the EU Declaration of Conformity can be found at the end of the Quick Start Guide. The most recent revision of the EU Declaration of Conformity can be found at Emerson.com. Ordinary Location Certification As standard, the transmitter has been examined and tested to determine...
  • Page 14 3. The Rosemount 781 transmitter will not pass the 500 Vrms electric strength test and this must be taken into account during installation. Canada...
  • Page 15 1. The plastic antenna may present a potential electrostatic ignition hazard and must not be rubbed or cleaned with a dry cloth. 2. The Rosemount 781 enclosure is made of aluminum alloy and given a protective paint finish; however, care should be taken to protect it from impact or abrasion if located in a zone 0 environment.
  • Page 16 Standards ABNT NBR IEC 60079-0:2013 ABNT NBR IEC 60079-11:2013 Markings Ex ia IIC T4 Ga, –40 ~ + 70 °C IP66, UL BR Special Conditions for Safe Use (X) 1. See certificate for special conditions. 6.11 China I3 NEPSI 本质安全 Emerson.com/Rosemount...
  • Page 17 September 2020 Quick Start Guide 证书 GYJ20.1394X(CCC 认证) 所用标准 GB3836.1 – 2010, GB3836.4 – 2010, GB3836.20-2010 标志 Ex ia IIC T4 Ga 特殊使用条件(X) 1. 产品外壳含有轻金属,用于 0 区时需注意防止由于冲击或摩擦产生 的点燃危险。 2. 天线材质含非金属,使用时须防止产生静电火花,只能用湿布清 理。 3. 此设备不能承受 GB3836.4-2010 标准中第 6.3.12 条规定的 500V 交 流有效值试验电压的介电强度试验。 使用注意事项...
  • Page 18 Quick Start Guide September 2020 6.12 Combinations Combination of I1, I5, and I6 Combination of I1, I5, I6, and I7 Emerson.com/Rosemount...
  • Page 19 September 2020 Quick Start Guide Figure 6-1: Rosemount 781 Declaration of Conformity Quick Start Guide...
  • Page 20 Quick Start Guide September 2020 Emerson.com/Rosemount...
  • Page 21 September 2020 Quick Start Guide Quick Start Guide...
  • Page 22 Quick Start Guide September 2020 Rosemount 781 China RoHS List of Rosemount 781 Parts with China RoHS Concentration above MCVs / Hazardous Substances Hexavalent Polybrominated Polybrominated Part Name Lead Mercury Cadmium Chromium biphenyls diphenyl ethers (Pb) (Hg) (Cd) (Cr +6)
  • Page 23 September 2020 Quick Start Guide Quick Start Guide...
  • Page 24 The Emerson logo is a Twitter.com/Rosemount_News trademark and service mark of Emerson Electric Facebook.com/Rosemount Co. Rosemount is a mark of one of the Emerson Youtube.com/user/ family of companies. All other marks are the RosemountMeasurement property of their respective owners.