hi, sorry to be so late responding to you. the pin router is a sony 'compact assembly tool cast-pro', model cast-cr1. i scanned the area being routed (while it was routing) using an acl staticide electrostatic locator model 300b. so, no it probably wasnt the correct way of measuring the charge, and i'd apprciate a recommendation in that regard. in addition, if anyone using a sony pin router can tell me if any extra esd precautions should be taken, let me know. thanks, phil -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Leo Higgins Sent: Wednesday, October 13, 2004 1:14 PM To: [log in to unmask] Subject: Re: [TN] pin router and esd Are you using a proper electrostatic voltmeter? Regards, Leo -----Original Message----- From: Crepeau, Phil [mailto:[log in to unmask]] Sent: Wednesday, October 13, 2004 1:38 PM To: [log in to unmask] Subject: [TN] pin router and esd hi, i'd like a sanity check if you don't mind. we are separating panels populated panels using a turbine driven pin router. i just knew that this equipment was generating excessive esd voltages. i used a hand held meter and measured the field while it was routing a panel. i didn't detect any significant voltage. does this seem reasonable? phil -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Gene Felder Sent: Wednesday, October 13, 2004 10:37 AM To: [log in to unmask] Subject: Re: [TN] ESD Question When working with voltages over 250 VAC, ESD personnel grounding should not be used, rather ionization may be required to neutralize electrostatic charges. Per ESD Handbook TR 20.20 paragraph 5.3.6.1 Introduction and Purpose / General Information "The primary method of static charge control is direct connection to ground for conductors, static dissipative materials, and personnel. A complete static control program must also deal with isolated conductors that cannot be grounded, insulating materials (e.g., most common plastics), and moving personnel who cannot use wrist or heel straps or ESD control flooring and footwear. Air ionization can neutralize the static charge on insulated and isolated objects by charging the molecules of the gases of the surrounding air." As important as ESD control is, it is of secondary importance compared to employee safety. Questions regarding safety should be answered by the facility's safety officer. The safety officer and ESD Coordinator should be aware of this information ANSI/ESD S20.20 states: "Paragraph 5. PERSONNEL SAFETY The Procedures and equipment described in this document may expose personnel to hazardous electrical conditions. Users of this document are responsible for selecting equipment that complies with applicable laws, regulatory codes and both external and internal policy. Users are cautioned that this document cannot replace or supersede any requirements for personnel safety. Ground fault circuit interrupters (GFCI) and other safety protection should be considered wherever personnel might come into contact with electrical sources. Electrical hazard reduction practices should be exercised and proper grounding instructions for equipment must be followed." Many Wrist Straps and Foot Grounders are Underwriter Laboratories listed. UL cautions: A one megohm resistor is molded into Wrist Strap Coil Cords. DO NOT REMOVE. If it becomes damaged, replace Coil Cord immediately. These products are not to be used in areas where the individual may come in contact with exposed electrical circuitry exceeding 250 volts. These products are for ElectroStatic control. They will not reduce or increase your risk of receiving electrical shock when using or working on electrical equipment. Follow the same precautions you would use without wrist straps, including: . Make certain that equipment having a grounding type plug is properly grounded. . Make certain that you are not in contact with grounded objects other than through the Wrist Strap. In addition, per ESD Handbook TR 20.20 section 5.3.13.6 Other Considerations "For personnel safety, static control garments should not be worn in situations where there is exposure to high voltage." Gene Felder [log in to unmask] -----Original Message----- From: Gregg A. Owens [SMTP:[log in to unmask]] Sent: Wednesday, October 13, 2004 10:01 AM To: [log in to unmask] Subject: [TN] ESD Question Dear TechNetters: In one of my customers test departments they test ESDS assemblies with voltages from 50 to 1400 volts. I have read that personal grounding should not be used when exposed to voltages over 250 volts. So how does a test technician protect the ESDS items while maintaining their personal safety from potential electrical shock? I realize that wrist straps have a one meg ohm resistor inside, but is that trustworthy for personnel safety? Any thoughts? Gregg A. Owens, CIT Manufacturing Technology Training Center, Inc. --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------