{"product_id":"omron-sysmac-cj1-series-cj1w-ia201-ac-input-unit","title":"Omron SYSMAC CJ1 Series CJ1W-IA201 AC Input Unit","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eOmron CJ1W-IA201 (CJ1WIA201)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a specialized 8-point AC input module designed for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSYSMAC CJ1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCJ2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eseries PLC platforms. This unit is specifically engineered to interface directly with high-voltage AC field devices, such as limit switches, push-buttons, and auxiliary contacts operating on 200 V to 240 V AC networks. By eliminating the need for interposing relays to step down voltages to 24 VDC, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCJ1W-IA201\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esignificantly reduces cabinet space and wiring complexity. The module features an integrated terminal block and high-quality internal optocouplers that provide up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2,000 VAC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edielectric strength, ensuring that sensitive PLC backplane electronics are fully isolated from high-voltage field-side surges.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCJ1W-IA201\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis optimized for stability in high-voltage industrial power environments.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAC Input Filtering\u003c\/strong\u003e: Features a robust hardware-based filter to prevent \"false triggers\" caused by induction or noise on long field cable runs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeterministic Response\u003c\/strong\u003e: Provides a reliable ON response time of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e18 ms\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand an OFF response time of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e48 ms\u003c\/strong\u003e, making it suitable for standard interlocking and monitoring applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Efficiency\u003c\/strong\u003e: Designed with an internal current consumption of only\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e80 mA\u003c\/strong\u003e, allowing for multiple units to be installed on a single rack without exceeding the power supply's capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Commonality\u003c\/strong\u003e: All 8 points share a single common circuit (8 points\/common), simplifying the neutral or line-return wiring for the field devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRemovable Terminal Block\u003c\/strong\u003e: Facilitates rapid maintenance; the terminal block can be removed without disconnecting the field wiring, minimizing downtime during module replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCJ1W-IA201\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOmron\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSYSMAC CJ1 \/ CJ2\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRated Input Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e200 to 240 VAC (50\/60 Hz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e170 to 264 VAC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e9 mA (50 Hz) \/ 11 mA (60 Hz) typical\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eON Voltage\/Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120 VAC min. \/ 4 mA min.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOFF Voltage\/Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e40 VAC max. \/ 2 mA max.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInternal Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e80 mA max. at 5 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInsulation Resistance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e20 MOhm min. (at 500 VDC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e130 g (Net) \/ 2.0 kg (Shipping)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this unit with 110 VAC signals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCJ1W-IA201\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ehas a minimum ON voltage threshold of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e120 VAC\u003c\/strong\u003e. For 100-120 VAC signals, you should use the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCJ1W-IA111\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodule.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require an external power supply for the inputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe inputs are \"sink\" type AC inputs. They do not require power from the PLC to sense the signal, but the field circuit itself must be powered by the 200-240 VAC source you are monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the benefit of the default 8 ms filter setting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe default software filter helps debounce mechanical contacts. While the hardware response is fixed, the PLC allows you to adjust the software filter in the \"PLC Setup\" to prioritize either speed or noise immunity.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Safety:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHigh voltage (200-240 VAC) is present at the terminal block. Ensure that the PLC power is OFF and the field power is locked out before removing the terminal block or performing maintenance. Use crimp-style spade or ring terminals to ensure a secure, vibration-resistant connection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSeparation of Cables:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTo prevent electromagnetic interference (EMI), route the 200 VAC input cables in separate trunking or ducts away from low-voltage DC signals and communication cables (Ethernet\/IP, RS-485).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLeakage Current Awareness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIf you are using sensors with leakage current (such as some proximity switches) to drive these inputs, ensure the leakage current is below\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2 mA\u003c\/strong\u003e. If it exceeds this value, the input may stay \"ON\" even when the sensor is inactive. In such cases, an external bleeder resistor may be required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":53077935587691,"sku":"CJ1W-IA201","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/CJ1W-IA201-jpjemvuk2wp.png?v=1775733512","url":"https:\/\/www.plcprotech.com\/products\/omron-sysmac-cj1-series-cj1w-ia201-ac-input-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}