{"product_id":"unitronics-m91-2-r1-12-24v-programmable-logic-controller","title":"UNITRONICS M91-2-R1 12\/24V PROGRAMMABLE LOGIC CONTROLLER","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a312ff7-89cc-83ec-b51a-00ece17d18b9-30\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a312ff7-89cc-83ec-b51a-00ece17d18b9-30\" data-turn-id-container=\"request-6a312ff7-89cc-83ec-b51a-00ece17d18b9-30\" data-testid=\"conversation-turn-70\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"a78d5c03-28c5-4998-b777-06a208128581\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"18\" data-end=\"613\"\u003eThe Unitronics M91-2-R1 Programmable Logic Controller is a 12\/24 VDC Micro-OPLC with an integrated text-based HMI, onboard digital and analog I\/O, and relay outputs for industrial automation and machine control systems. Commonly installed in packaging equipment, material handling systems, pump stations, HVAC controls, and OEM machinery requiring compact \u003ca href=\"https:\/\/plgautomation.com\/collections\/plcs-more\"\u003ePLC\u003c\/a\u003e and operator interface functionality. Maintenance technicians, OEMs, and \u003ca href=\"https:\/\/plgautomation.com\/collections\/hmi-operator-interfaces\"\u003esystem integrators\u003c\/a\u003e use this controller for replacement, retrofit, automation upgrades, and new control system installations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"615\" data-end=\"632\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"634\" data-end=\"1092\"\u003eThe Unitronics M91-2-R1 is designed for factory automation, conveyor systems, water and wastewater treatment, packaging machinery, building automation, and standalone machine control applications where integrated logic control, operator interaction, and scalable I\/O capabilities are required. It supports small to medium automation tasks and can be expanded with compatible I\/O modules to accommodate evolving system requirements. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1094\" data-end=\"1123\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1125\" data-end=\"1997\"\u003e• Brand: Unitronics\u003cbr data-start=\"1144\" data-end=\"1147\"\u003e• Part Number: M91-2-R1\u003cbr data-start=\"1170\" data-end=\"1173\"\u003e• Product Type: Programmable Logic Controller (Micro-OPLC with Integrated HMI)\u003cbr data-start=\"1251\" data-end=\"1254\"\u003e• Supply Voltage: 12\/24 VDC\u003cbr data-start=\"1281\" data-end=\"1284\"\u003e• Digital Inputs: 10 configurable PNP\/NPN inputs\u003cbr data-start=\"1332\" data-end=\"1335\"\u003e• Analog Inputs: 1 onboard analog input\u003cbr data-start=\"1374\" data-end=\"1377\"\u003e• Relay Outputs: 6 relay outputs\u003cbr data-start=\"1409\" data-end=\"1412\"\u003e• Display: 2-line × 16-character LCD text display\u003cbr data-start=\"1461\" data-end=\"1464\"\u003e• Keypad: Integrated 15-key operator interface\u003cbr data-start=\"1510\" data-end=\"1513\"\u003e• Communication Ports: RS232 \/ RS485\u003cbr data-start=\"1549\" data-end=\"1552\"\u003e• Supports MODBUS communication protocol\u003cbr data-start=\"1592\" data-end=\"1595\"\u003e• Expansion Capability: Supports I\/O expansion modules up to 150 I\/O points\u003cbr data-start=\"1670\" data-end=\"1673\"\u003e• High-Speed Inputs: Supports high-speed counter\/shaft encoder functions on selected inputs\u003cbr data-start=\"1764\" data-end=\"1767\"\u003e• Application Memory: 36K virtual ladder memory\u003cbr data-start=\"1814\" data-end=\"1817\"\u003e• Designed for industrial automation and machine control applications\u003cbr data-start=\"1886\" data-end=\"1889\"\u003e• Suitable for OEM equipment, retrofit, and maintenance installations \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1999\" data-end=\"2023\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"2025\" data-end=\"2105\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Unitronics M91-2-R2C\u003cbr data-start=\"2047\" data-end=\"2050\"\u003e• Unitronics JZ20-R31\u003cbr data-start=\"2071\" data-end=\"2074\"\u003e• Unitronics Vision V130-33-R34\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"UNITRONICS","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51728645587246,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_60b56bf3-718d-46c3-b399-4e6e40dc8963.jpg?v=1770587160","url":"https:\/\/plgautomation.com\/products\/unitronics-m91-2-r1-12-24v-programmable-logic-controller","provider":"PLG Automation ","version":"1.0","type":"link"}