{"product_id":"omron-g9sx-ex401-rt-g9sx-series-flexible-safety-expansion-unit","title":"Omron G9SX-EX401-RT G9SX Series Flexible Safety Expansion Unit","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eIntegrating directly into master safety architectures, the \u003cstrong\u003eOmron G9SX-EX401-RT\u003c\/strong\u003e expansion module expands the output capabilities of standard safety systems by providing additional instantaneous relay channels. Operating on a \u003cstrong\u003e24 VDC\u003c\/strong\u003e supply, this unit features \u003cstrong\u003e4 instantaneous safety outputs\u003c\/strong\u003e and 1 auxiliary feedback output, allowing industrial automation systems to scale safety-related control circuits without compromising response speed or diagnostic visibility. Designed with robust \u003cstrong\u003escrew terminals\u003c\/strong\u003e, it ensures high vibration resistance and secure wiring connections in demanding industrial environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstantaneous Safety Expansion:\u003c\/strong\u003e Adds 4 highly reliable, instantaneous electromechanical safety outputs to a master controller.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure Inter-Unit Linking:\u003c\/strong\u003e Connects directly to G9SX-series master modules via safe logical connections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuxiliary Diagnostic Output:\u003c\/strong\u003e Features 1 auxiliary output for standard PLC monitoring and fault reporting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial-Grade Screw Terminals:\u003c\/strong\u003e RT-designated model incorporates heavy-duty screw terminals for robust field wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eExpansion of safety output circuits for light curtains, E-stop loops, and safety door switches.\u003c\/li\u003e\n  \u003cli\u003eMulti-zone safety system integration in high-capacity manufacturing lines.\u003c\/li\u003e\n  \u003cli\u003eAutomated packaging systems requiring independent or grouped emergency stop zones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 0.5rem; text-align: left; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.5rem; text-align: left; font-weight: bold;\"\u003eSpecification Value\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eOmron\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eModel Code\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eG9SX-EX401-RT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eSeries\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eG9SX Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eDevice Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eFlexible Safety Expansion Unit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eRated Supply Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e24 VDC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eOperating Voltage Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e-15% to 10% of rated supply voltage\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eRated Power Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e2 W maximum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eSafety Relay Outputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e4 instantaneous outputs (DPST-NO x 2)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eAuxiliary Outputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e1 auxiliary semiconductor output\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eRated Load\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e250 VAC, 3 A \/ 30 VDC, 3 A (resistive load)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eRated Carry Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e3 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eOperating Time (OFF to ON)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e30 ms maximum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eResponse Time (ON to OFF)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e10 ms maximum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eMechanical Durability\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e5,000,000 cycles minimum (switching frequency: 7,200 cycles\/hour)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eElectrical Durability\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e100,000 cycles minimum (rated load, switching frequency: 1,800 cycles\/hour)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eTerminal Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eScrew terminals\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eProduct Net Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e0.165 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e1.50 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThis expansion unit must always be matched with a master G9SX unit (e.g., G9SX-AD or G9SX-ADA series). It cannot operate as a standalone safety relay. When replacing older Omron safety expansion modules, verify terminal footprints; the RT model features screw terminals, which differ from spring-cage (RC) variants.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen calculating the safety integrity level (SIL) and performance level (PL) for your safety loop, remember to add the 10 ms maximum response time of the expansion unit to the response time of your master G9SX unit. Ignoring this cumulative propagation delay can lead to insufficient safety distances for light curtains and emergency stop stations.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEnsure that the cross-unit connection cable is fully locked into place on both sides before applying 24 VDC control power. Powering the system up with a loose or partially inserted communication bus connector will cause the master module to enter a critical system fault mode, requiring a full power cycle to reset.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e De-energize all primary and auxiliary power sources before handling, mounting, or wiring this device. Failure to completely isolate power can result in electrical shock, unexpected machine startup, or irreversible damage to the internal safety relays.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 0.2rem;\"\u003eMount the expansion unit securely onto a standard 35 mm DIN rail immediately adjacent to the master G9SX safety unit.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 0.2rem;\"\u003eConnect the lateral expansion bus connector from the master controller to the side socket of the expansion unit until it clicks firmly into place.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 0.2rem;\"\u003eWire the 24 VDC power supply terminals and individual safety outputs, ensuring that all screw terminals are torqued according to OEM specifications.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":53077933261163,"sku":"G9SX-EX401-RT","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/g9sx-ex401-rt-35os50vk1g0.png?v=1775733814","url":"https:\/\/www.plcprotech.com\/id\/products\/omron-g9sx-ex401-rt-g9sx-series-flexible-safety-expansion-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}