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Selection Guide

Safety Monitoring Relays

Safety Monitoring Relays

OSTI Safety Monitoring Relays - 28201 Selection Guide

Relay

Selecting the Proper Monitoring Relay for Your Application Choosing the Proper Model in 10 Selection Steps

Safety monitoring relays range in function from two-hand palm button control to dual channel input units with time-delayed outputs that provide conformity to ANSI B11.19-2003, Section 6 for Performance of the Safety Related Function(s).The following questions and charts will guide you from the various capabilities and features to the proper model number.

1

Does the application require two dual channel inputs? Yes: See Chart Below No: Go to Question 2 Outputs Operating VoltageRelay Safety Aux. Solid State Safety Delayed 24 24 120 200 230 CatalogModel Terminals Inputs
† N/O N/C Aux. N/O N/C DC AC AC AC AC PageSafety Monitoring Relays

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SR131A Fixed (2) 1 N/C + 1 N/O 2 – 2 – – â—� – – – – I-19

2

Does the application require one single channel or one dual channel input? Yes: See Chart Below No: Go to Question 3 Outputs Operating VoltageRelay Safety Aux. Solid State Safety Delayed 24 24 120 200 230 CatalogModel Terminals Inputs
† N/O N/C Aux. N/O N/C DC AC AC AC AC PageSafety Monitoring Relays SR101A Fixed 1 N/C, Supply Voltage 2 – – – – â—� â—� â—� – â–  I-7G9SA-301
1 Fixed 1 N/C, 2 N/C, PNP 3 1 – – – â—� â—� â—� – â–  I-5 G9SA-501
1 Fixed 1 N/C, 2 N/C, PNP 5 1 – – – â—� â—� â—� – â–  I-5 SR102AM Fixed 1 N/C, 2 N/C, PNP 2 – – – – â—� â—� â—� – â–  I-8SR103AM Fixed 1 N/C, 2 N/C, PNP 3 1 – – – â—� â—� â—� – â–  I-9

3

Does the application require the ability to accept input from a variety of safety devices such as E-stops, interlocks or light curtains? Yes: See Chart Below No: Go to Question 4 Outputs Operating VoltageRelay Safety Aux. Solid State Safety Delayed 24 24 120 200 230 CatalogModel Terminals Inputs
† N/O N/C Aux. N/O N/C DC AC AC AC AC PageMulti-Input Safety Monitoring Relays SR120MP Fixed 1 N/C, 2 N/C, SM, PNP 3 1 4 – – â—� â—� â—� – â–  I-14SR126AM Fixed 1 N/C, 2 N/C, PNP 7 2 4 â—� â—� â—� – â–  I-17 1 N/C, 2 N/C, SM, SR130DD Fixed PNP (2 total) 6 – 3 – – â—� – – – – I-18 Omron STI has many additional models available, some are readily available. Use www.sti.com’s SpeedSPEC Code “Relay” to quickly review additional products.

OMRON SCIENTIFIC TECHNOLOGIES, INC. USA For Complete Specifications and Additional Models

Tel. 1/888/510-4357

Canada

Tel. 1/866/986-6766 On the Internet: www.sti.com or www.omron.ca

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