FORD ELX-1-1995 RADIO FREQUENCY INTERFACE (RFI) SUPPRESSION《射频干扰（RFI）抑制》.pdf

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1、 Manufacturing StandardsFord Motor Company199506 RADIO FREQUENCY INTERFERENCE (RFI) ELX-1SUPPRESSIONEngineering Standards & Printed copies are uncontrolled.Systems Engineering (ESSE) Page 1 of 31. SCOPE:1.1 | The purpose of this standard is to assure that industrial equipment,| which in its operatio

2、n utilizes radio frequencies above 9 kHz| (9,000 cycles per second) complies with all requirements of the| Federal Communications Commission (FCC) Rules and Regulations, Title| 47, Part 18, as applied to Industrial, Scientific, and Medical (ISM)| equipment within the Company. Its purpose is to preve

3、nt harmful| interference to radio communications. Furthermore, such ISM| equipment shall be subject to verification, in accordance with the| relevant sections of Part 2, Subpart J, of Title 47. (Equipment| Authorization Procedures)1.1.1 | Category of ISM Equipment:| a) Industrial heating equipment|

4、b) Ultrasonic equipment| c) RF lighting devices (Ex. Electronic Ballasts)| NOTE: Ballast require FCC certification1.2 It is the further intent of this standard to assure that precautionshave been taken so that two or more pieces of equipment utilizingradio frequencies and located within the same bui

5、lding or plant areaare compatible and will allow simultaneous operation of allequipment without interference.1.3 This standard does not apply to communication apparatus, eitherfixed or mobile, used for message handling purposes.1.4 | Part 18, “Industrial, Scientific, and Medical Equipment“, is| incl

6、uded as part 47CFR of the Federal Communications Commission| Rules and Regulations. Copies are available from the:| U.S. Government Printing Office| 710 North Capitol St. N.W.| Washington, D.C. 20402| Phone: (202) 783-32381.5 (ISM) equipment for use in Canadian Plants shall comply withCanadian Stand

7、ards Association (CSA) and the Canadian ElectricalCode as applicable, including supplements issued by the OntarioHydro and Department of Communications (DOC).1.6 | Other Applicable Standards:| Ford Manufacturing Standard BNX - “Industrial Process| Equipment - Induction and Dielectric| Heating Equipm

8、entManufacturing StandardsFord Motor Company199506 RADIO FREQUENCY INTERFERENCE (RFI) ELX-1SUPPRESSIONEngineering Standards & Printed copies are uncontrolled.Systems Engineering (ESSE) Page 2 of 32. PROCUREMENT:2.1 | Industrial equipment (ISM) using radio frequencies above 9 kHz shall| comply to thi

9、s standard. To facilitate compliance, paragraphs 2.2| and 2.3 (below) shall be included as part of the Purchasing| Information Request (PIR) and the Purchase Order. In addition, it| shall be specified that the equipment shall conform to this| standard.2.2 Equipment shall comply with all Federal Comm

10、unications Commissionrequirements as outlined in Part 18 of the FCC Rules for Industrial,Scientific, and Medical Equipment.2.3 | The equipment manufacturer shall furnish proof of compliance (i.e.| verification and date of verification) with Part 18 of the FCC Rules| and Regulations. Such proof shall

11、 be submitted to the| requisitioning activity. In addition, the manufacturer shall affix| a permanent non-corrodible nameplate to the exterior of the control| enclosure door. This nameplate shall include a statement that “the| equipment has been tested to the verification requirements of the| FCC Ru

12、les and Regulations Part 18.“3. INSTALLATION:3.1 Installation shall be made in strict accordance with the equipmentmanufacturers installation and operating instructions.3.1.1 | The installation shall also comply with the National Electrical| Code (NEC), Article 665 - Induction and Dielectric Heating

13、| Equipment, and International Electrotechnical Commision (IEC)| 204 part 1, clause 4.4.1.3.2 GROUNDING: In order to minimize undesirable radiation from theequipment, it is imperative that the equipment be adequatelygrounded. Grounding through supply conduits and other piping to thebuilding frame is

14、 not adequate. All grounding to be done in strictcompliance with the manufacturers installation instructions and NECSection 250.Aluminum grounding conductors shall not be permitted.Manufacturing StandardsFord Motor Company199506 RADIO FREQUENCY INTERFERENCE (RFI) ELX-1SUPPRESSIONEngineering Standard

15、s & Printed copies are uncontrolled.Systems Engineering (ESSE) Page 3 of 33.3 BONDING: Where the equipment consists of several units such as theoscillator or generator, controls, work table, automation andaccessory items, these shall be bonded together with copperconductors according to instructions

16、 by the manufacturer andrequirements specified in NEC Article 250, Part G. Conduits,piping, and other metal to metal joints are not considered adequatebonding for apparatus operating on radio frequencies.3.4 DOORS, COVERS, AND SHIELDS: Enclosure or compartment doors, covers,and shields shall be clos

17、ed and in place whenever the equipment isin operation. Periodic maintenance inspections shall be made toassure that all joints are secure and that shielding has notdeteriorated. Corroded, frayed, or worn bonding conductors, mesh,or screens shall be promptly replaced.3.5 | INFORMATION TO THE USER: The following information shall be| provided to the user per FCC section 18.213:| a) The interference potential of the system or device| b) Maintenance of the system| c) Simple measures that can be taken by the user to correct| interferences.| NOTE: Denotes area of change in previous issue.|