440G-LZ Power to Release Guard Locking Switch May Unlock During Repeated Power Outage Posted on July 7, 2017 by Brandy McNeil Error with 440G LZ Product Safety Group 1201 South Second Street Milwaukee, WI USA 53204 firstname.lastname@example.org PRODUCT NOTICE Notice of Potential Product Concern Rockwell Automation issues a Product Notice when it identifies a product(s) anomaly that may cause commercial or customer satisfaction concerns. 440G-LZ Power to Release Guard Locking Switch May Unlock During Repeated Power Outage Reference: 2017-07-001 Date: July 2017 This Product Notice informs you of a potential anomaly that exists with the 440G-LZ Power to Release Guard Locking Switch. A repeat power outage during the initial eight seconds of device restart may cause the switch locking mechanism to release. PRODUCT NOTICE Page 2 of 5 – Product Identification – The affected products are the power to release versions of the 440G-LZ Guard Switch. Power to lock versions are not affected by this anomaly. Affected product may be identified by the catalog number and firmware version. Affected product was manufactured November 2013 (date code 1344) through June 2017 (date code 1725). The affected catalog numbers and corresponding affected firmware revisions are provided in the following table. With Lock Status Auxiliary With Door Proximity Auxiliary Catalog Number Firmware Catalog Number Firmware 440G-LZS21SPRH 1.002 440G-LZS21STRH 1.001 440G-LZS21SPRA 1.002 440G-LZS21STRA 1.001 440G-LZS21SPRB 1.002 440G-LZS21STRB 1.001 440G-LZS21UPRH 1.002 440G-LZS21UTRH 1.001 440G-LZS21UPRA 1.002 440G-LZS21UTRA 1.001 440G-LZS21UPRB 1.002 440G-LZS21UTRB 1.001 For unopened product still in the carton, the identification information may be found on the product carton label. The catalog number will be in the CAT field and the date code is in the bottom right corner of the format YYWW, where YY is the year code and WW is the week of the year. In the example shown to the left, the catalog number is 440G-LZS21STRH and the date code is 1542, or the 42nd week of 2015. This product matches the catalog listing and is within the affected date code range of 1344 through 1725, and would be subject to this notification. For opened and installed product, the identification information may be found printed on the side of the product. The catalog number will be at the top right, the firmware revision will be in the F/W REV field, and the date code will be in the lower left corner. In the example shown to the left, the catalog number is 440G-LZS21UPRH, the firmware revision is 1.002, and the date code is 1622 or the 22nd week of 2016. This product matches the catalog listing and firmware revision, and is within the affected date code range of 1344 through 1725. This product would be subject to this notification. PRODUCT NOTICE Page 3 of 5 – Description – A potential anomaly exists with the 440G-LZ Power to Release Guard Locking Switch. A repeat power outage during the initial eight seconds of device restart may cause the switch locking mechanism to release. When 24 volt power is removed from a switch that is in the locked condition with the bolt extended into the actuator, the switch will correctly remain in the locked condition. When power is restored, the switch will remain in the locked condition through the switch’s eight second power up sequence. However, after power is restored, if power is removed within the switch’s eight second power up sequence, the switch will go to an unlocked condition. This could allow an operator access to an area normally protected by the locking switch with the potential to access machinery that may still be in its power down sequence. This has the potential, under these very specific conditions, to create a hazardous condition. – Temporary Workarounds – Rockwell Automation has not identified a temporary workaround for this anomaly. Refer to the Correction section for remediation steps. – Correction – Important – Rockwell Automation strongly recommends that customers perform a system risk assessment on affected equipment and machinery to determine the likelihood under these very specific conditions that operators may come into contact with machinery, creating a potentially hazardous condition, should this anomaly occur. If the result of your risk assessment indicates remediation is necessary, you may implement one of following actions: Add a relay to either of the input or output circuit of the 24 volt power supply such that if power is lost the relay will latch requiring a manual reset to apply power. This is commonly referred to as “no volt” relay protection. Request replacement product through your local Rockwell Automation Distributor or Rockwell Automation Sales Office, or the original place of purchase. When requesting replacement product you must reference this Product Notice 2017-07-001. Both opened and unopened product may be replaced. Unopened product should be returned in its original carton with all carton seals intact. Important – Implementation of either of these corrective actions may require additional system functional testing. Refer to the Guardmaster® Guard Locking Switch User Manual, Rockwell Automation publication number 440G-UM001, available from the Rockwell Automation Literature Library at http://www.rockwellautomation.com/global/literature-library/overview.page, for additional information. – Requested Customer Action – Rockwell Automation requests you take the following actions: Check if you have a product affected by this Product Notice. Refer to the Product Identification and Description sections of this document for product identification assistance. PRODUCT NOTICE Page 4 of 5 If your risk assessment indicates a need for product replacement, contact your local Rockwell Automation Distributor or Sales Office for replacement. Make sure to reference this Product Notice when requesting replacement product. Rockwell Automation will accept requests for replacement product for a period of 18 months from the initial publication of this Product Notice. All returns should be over packed to prevent shipping damage during transit. Continue to check incoming shipments for potentially affected product. Product in transit or in non-Rockwell Automation inventory may continue to contain potentially affected product for a period of time after the publication of this document. If you need additional assistance, please contact Rockwell Automation Technical Support. See Appendix A for local telephone numbers. Customers without TechConnect contracts should reference this Product Notice when calling. Customers with TechConnect contracts may be able to chat online with support representatives. Reference this Product Notice when connected to a support engineer. The most current version of this Product Notice is posted on the Rockwell Automation Support Center, http://www.rockwellautomation.com/knowledgebase, as ID number 1053247. Additional languages may also be available at the end of this article attached as downloadable PDF documents. Customers using the Rockwell Automation Support Center in a non-English language should search for the document by the article ID number listed above. The resulting article ID for non-English postings may be different than the listed article ID number. If this Product Notice does not affect you because you do not have the products any longer, or if you are a Distributor, Rockwell Automation asks that you forward a copy of this notice, with any identifying documentation, immediately to the person or company that now has the product. We also ask that you contact Rockwell Automation Technical Support and provide the location of the affected units. We appreciate your immediate cooperation. If you have any questions, please contact us. Sincerely, ROCKWELL AUTOMATION You can register for Automatic Product Safety Advisories and Product Notices from Rockwell Automation by email. Go to the Support web page at http://www.rockwellautomation.com/support and click the Visit the Technical Support Center link. Sign in with your Tech Connect Account or free Rockwell Automation Member Account and you can subscribe to important product updates, including Product Safety Advisories and Product Notices. PRODUCT NOTICE Page 5 of 5 Appendix A Regional Technical Support Information The following list can help you to contact the correct technical support center for your location. If your country is not listed, you can find a customer support number for your location on http://www.rockwellautomation.com/support/ by clicking Get Support Now, selecting your country, and clicking the Phone/OnSite Support tab. Region / Country Phone Number ( ) International Code Region / Country Phone Number ( ) International Code Asia/Pacific Europe Australia 1 800 762 593 Austria (49) 211 41553 664 China 400 620 6620 Belgium (32) 2 716 8411 Hong Kong +852 2887 4666 Czech Republic (420) 28401 5911 India 1 800 2000 121 Denmark (45) 43 466 006 Japan 03 3206 2785 Finland (358) 958 447 419 Korea (82) 2 2188 4400 France (33) 825303132 Malaysia 1 800 80 4851 Germany (49) 211 41553 664 New Zealand 0800 27 27 25 Hungary (420) 28401 5911 Taiwan 080 902 0908 Ireland (44) 01908 635245 Thailand (66) 2936 1500 Italy (Brescia, Milano e Padova) (39) 199 11 99 00 Caribbean Italy (Bologna,Firenze,Napoli, Roma e Torino) (39) 199 11 99 22 All Countries (English) (1) 440 646 3223 Morocco (33) 825303132 All Countries (Español) (1) 440 646 3650 Netherlands (31) 10 266 55 80 Central America Poland (48) 22 32 60 707 Argentina 800.666.0320 Portugal (1) 440 646 3223 Belize (1) 440 646 3650 Slovakia (420) 284015911 Bolivia (54) 800 10 0632 Spain (34) 902 30 93 30 Brazil (55) 11 5189 9500 Sweden (46) 46 19 93 91 Chile 800.53.0012 Switzerland (German) (41) 0844 84 84 11 Colombia 01.800.700.2107 Switzerland (French) (41) 0844 84 84 12 Costa Rica 0800.013.1215 Switzerland (Italian) (41) 0844 84 84 13 Ecuador 58.212.949.0611 United Kingdom (44) 01908 635245 El Salvador (52) 55 5246 2010 North America Guatemala 1.800.288.0108 Canada (1) 440-646-3223 Honduras (52) 55 5246 2010 United States (1) 440-646-3223 Mexico 001.888.365.8677 Nicaragua (52) 55 5246 2010 Panama 001.800.203.3475 Paraguay (54) 11 5554 4000 Peru 0800.535.36 Suriname (1) 440 646 3650 Uruguay (54) 11 5554 4000 Venezuela 800.1.00.3062 If you have a TechConnect Contract, please use the telephone number supplied to you with the contract.