Rockwell Automation Allen-Bradley Guardmaster Dual-input Safety Relay Application Technique
Light curtain with a dual-input safety relay safety function
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Application Technique
Light Curtain with a Dual-input Safety Relay Safety Function
Products: Guardmaster Dual-input Safety Relay, GuardShield Light Curtain, 100S-C Safety Contactors
Safety Rating: Cat. 4, PLe to ISO 13849-1: 2015
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Table of Contents
Related Manuals for Rockwell Automation Allen-Bradley Guardmaster Dual-input Safety Relay
Summary of Contents for Rockwell Automation Allen-Bradley Guardmaster Dual-input Safety Relay
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Page 1: Table Of Contents
Application Technique Light Curtain with a Dual-input Safety Relay Safety Function Products: Guardmaster Dual-input Safety Relay, GuardShield Light Curtain, 100S-C Safety Contactors Safety Rating: Cat. 4, PLe to ISO 13849-1: 2015 Topic Page Important User Information General Safety Information Introduction Safety Function Realization: Risk Assessment Stop Safety Function Safety Function Requirements... -
Page 2: Important User Information
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. -
Page 3: General Safety Information
Light Curtain with a Dual-input Safety Relay Safety Function General Safety Information Contact Rockwell Automation to learn more about our safety risk assessment services. IMPORTANT This application example is for advanced users and assumes that you are trained and experienced in safety system requirements. -
Page 4: Introduction
, and right-click and save the component that you want to use. If the PDF file opens in a browser and you don't see the Attachments link , download the PDF file and then reopen the file with the Adobe Acrobat Reader application. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019... -
Page 5: Safety Function Realization: Risk Assessment
The safety functions in this application technique each meet or exceed the requirements for category 3, Performance Level d (cat. 3, PLd), per ISO 13849-1 and control reliable operation per ANSI B11.19. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019... - Page 6 C = 0 mm (0 in.) [8 x (d-14) but not less than 0 where d is the resolution of the light curtain (d=14 mm (.55 in.))] S = (K x T) + C = 2000 mm (78.74 in.) per second x 0.405 s + 0 mm (0 in.) = 810 mm (31.89 in.) Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019...
- Page 7 Ds = 63 x (0.3 + 0.09 + 0.015 + 0) + 1 = 26.5 in. (673.1) The light curtain must not be mounted closer than 26.5 in. (673.1 mm) from the guarded hazard. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019...
- Page 8 The minimum distance (A) depends on the distance (D) between the sender and the receiver. Follow these steps to determine the minimum distance from the reflecting surfaces. 1. Determine the distance, (D) in meters, between the sender and receiver. 2. Read the minimum distance, (A) in millimeters, from the graph. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019...
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Page 9: Functional Safety Description
After clearing the light curtain, once all safety input signals are correct, no faults are detected, and the reset push button is pressed (for 0.25…3.0 seconds) and released, the DIS relay turns ON its safety outputs, providing power to the contactor coils. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019... -
Page 10: Bill Of Material
24V signal from the coils of the two safety contactors whose main motor contacts then open, thus removing power from the motor. This action causes the motor to coast to a stop (stop category 0). Stopped is the safe state. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019... - Page 11 Receiver Brown Brown White White Black Black Reset External Switched Blue Blue Stop/Start Circuit Grey Grey LOGIC 24V DC Com For an electrical schematic in AutoCAD or EPLAN format, see the attached files. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019...
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Page 12: Configuration
4. Verify the setting by counting the number of times the IN1 indicator blinks between pauses (one blink confirms the setting of 1). 5. Cycle power to the DIS relay to store the logic setting. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019... -
Page 13: Calculation Of The Performance Level
Light Curtain with a Dual-input Safety Relay Safety Function Calculation of the Performance Level The calculations of the performance levels are based on the November 2017 issue of the Rockwell Automation safety library. Safety Function Limiting Factors Mechanical and electromechanical devices can introduce significant limitations on the number of operating cycles that are allowed per year to achieve the safety rating. - Page 14 The CCF value is generated by using the scoring process that is outlined in Annex F of ISO 13849-1. The complete CCF scoring process must be performed when actually implementing an application. A minimum score of 65 must be achieved. Rockwell Automation Publication SAFETY-AT168A-EN-P - February 2019...
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Page 15: Verification And Validation Plan
Industrial Automation Wiring and Grounding Guidelines, publication1770-4.1 Provides general guidelines on how to install a Rockwell Automation industrial system. Product Certifications website, rok.auto/certifications Provides declarations of conformity, certificates, and other certification details. - Page 16 Rockwell Automation maintains current product environmental information on its website at http://www.rockwellautomation.com/rockwellautomation/about-us/sustainability-ethics/product-environmental-compliance.page. Allen-Bradley, Guardmaster, GuardShield, LISTEN. THINK. SOLVE., Rockwell Automation, Rockwell Software, and SensaGuard are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.