{"product_id":"siemens-6es5090-8ma01-s5-90u-compact-controller","title":"Siemens 6ES5090-8MA01 S5-90U Compact Controller","description":"\u003cdiv\u003e\u003cp\u003eSiemens 6ES5090-8MA01 SIMATIC S5-90U Compact Controller is a compact, battery-backed CPU from the SIMATIC S5 family. It provides 10 digital inputs at 24 V DC and 6 relay outputs, and it operates from a mains supply of 115\/230 V AC. The unit includes an integrated backup battery and is designed to interface with an IM 90 interface module to connect to S5-100 IO modules, supporting up to six expansion modules for modest expansion of I\/O. The 6ES5090-8MA01 order number identifies this S5-90U compact controller configuration, making it suitable for small machine-control tasks and legacy automation projects that require reliable digital input sensing and relay actuation in a compact footprint. Typical applications include stand-alone control of simple machines, interlocks, sequencing tasks, and packaging or machine-tools setups where 24 V DC inputs are read and relays drive actuators, with industry-standard 115\/230 V AC power and a battery-backed memory arrangement to retain data between power cycles in the S5-90U system.\u003c\/p\u003e\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":46268486549738,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-018.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-6es5090-8ma01-s5-90u-compact-controller","provider":"GTG Hardware","version":"1.0","type":"link"}