National Instruments cFP-RLY-421 Operating Instructions Manual
National Instruments cFP-RLY-421 Operating Instructions Manual

National Instruments cFP-RLY-421 Operating Instructions Manual

Fieldpoint eight-channel spst relay module

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National Instruments cFP-RLY-421 Operating Instructions Manual

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Summary of Contents for National Instruments cFP-RLY-421

  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 Page 1 Tuesday, October 11, 2005 11:50 AM FieldPoint Operating Instructions cFP-RLY-421 Eight-Channel SPST Relay Module These operating instructions describe how to install and use the National Instruments cFP-RLY-421 relay module, revision 185151C-01 and later. For information about installing and using earlier revisions of the cFP-RLY-421, refer to document number 323617B-01.
  • Page 3 Page 2 Tuesday, October 11, 2005 11:50 AM To install the cFP-RLY-421, refer to Figure 1 and complete the following steps: 1. Align the captive screws on the cFP-RLY-421 with the holes on the backplane. The alignment keys on the cFP-RLY-421 prevent backward insertion.
  • Page 4 The cFP-CB-x connector block has connections for each of the eight cFP-RLY-421 relay channels and for an external supply to power field devices. If you are using the cFP-RLY-421 in a hazardous voltage application, you must use the cFP-CB-1 connector block or a suitable hazardous voltage cable. A hazardous voltage is a voltage greater than 42.4 V...
  • Page 5 Page 4 Tuesday, October 11, 2005 11:50 AM Table 2. V and COM Terminal Assignments Caution Cascading power between two modules defeats isolation between those modules. Cascading power from the network module defeats all isolation between modules in the FieldPoint bank.
  • Page 6: Status Indicators

    NI Switches Help. Status Indicators After you install the cFP-RLY-421 onto a backplane and apply power to the network module, the green POWER indicator lights and the cFP-RLY-421 informs the network module of its presence.
  • Page 7: Isolation And Safety Guidelines

    This section describes the isolation of the cFP-RLY-421 and its compliance with international safety standards. The field wiring connections are isolated from the backplane and the inter-module communication bus.
  • Page 8 • Operate the cFP-RLY-421 only at or below Pollution Degree 2. Pollution Degree 2 means that only nonconductive pollution occurs in most cases. Occasionally, however, condensation can cause temporary conductivity.
  • Page 9: Specifications

    Page 8 Tuesday, October 11, 2005 11:50 AM such as that provided by a standard wall outlet. Do not use this module with voltages in Measurement Categories III or IV. Using This Product Safely in Hazardous Locations This product is suitable for use in U.S. and Canada: Class I, Division 2, Groups A, B, C, D, T4 hazardous locations;...
  • Page 10 Page 9 Tuesday, October 11, 2005 11:50 AM Maximum switching power AC ..........375 VA DC ..........60 W DC path resistance Initial .......... 150 mΩ End of life........≥ 1 Ω Note DC path resistance typically remains low for the life of the relay.
  • Page 11: Power Requirements

    Page 10 Tuesday, October 11, 2005 11:50 AM Power Requirements Power from network module .... 1 W max Safety Isolation Voltage Isolation voltage is verified by a dielectric withstand test. Channel to backplane Continuous ......... 250 V Withstand........2,300 V...
  • Page 12: Electromagnetic Compatibility

    Page 11 Tuesday, October 11, 2005 11:50 AM Electromagnetic Compatibility Emissions.......... EN 55011 Class A at 10 m FCC Part 15A above 1 GHz Immunity........... EN 61326:1997 + A2:2001, Table 1 CE, C-Tick, and FCC Part 15 (Class A) Compliant...
  • Page 13: Where To Go For Support

    Switzerland 41 56 200 51 51, Taiwan 886 02 2377 2222, Thailand 662 278 6777, United Kingdom 44 0 1635 523545 National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.
  • Page 14 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

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