{"product_id":"omron-cj1w-ad04u-cj-series-isolated-type-universal-input-unit","title":"Omron CJ1W-AD04U CJ Series Isolated-type Universal Input Unit","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eFor versatile process monitoring and multi-signal data acquisition, the \u003cstrong\u003eOmron CJ1W-AD04U\u003c\/strong\u003e provides direct connection of multiple sensor types to Omron CJ-series programmable logic controller (PLC) systems. Designed with four high-precision input channels, this unit delivers individual channel-to-channel isolation, effectively mitigating electrical noise, ground loops, and signal degradation in harsh industrial environments.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eCJ1W-AD04U\u003c\/strong\u003e universal input module accommodates a broad range of signal types, including thermocouples, resistance temperature detectors (RTDs), DC voltage, and DC current. Each channel can be configured independently, allowing engineers to consolidate different process measurements onto a single physical module, maximizing rack space and lowering system costs.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFour isolated-type universal input channels with robust channel-to-channel electrical isolation.\u003c\/li\u003e\n  \u003cli\u003eSupports a wide array of temperature sensors, including Pt100, JPt100, Pt1000, and thermocouple types K, J, T, L, R, S, and B.\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard DC analog signals, including 0 to 5 V, 1 to 5 V, 0 to 10 V, 0 to 20 mA, and 4 to 20 mA.\u003c\/li\u003e\n  \u003cli\u003eIndependent configuration of signal range and sensor type for each individual input channel.\u003c\/li\u003e\n  \u003cli\u003eHigh-speed conversion processing at 250 ms for all four inputs.\u003c\/li\u003e\n  \u003cli\u003eRemovable terminal block simplifies system wiring, commissioning, and module replacement.\u003c\/li\u003e\n  \u003cli\u003eDirect integration within the CJ-series backplane, allocating a single unit number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial furnace and oven temperature monitoring.\u003c\/li\u003e\n  \u003cli\u003eChemical and petrochemical process control systems.\u003c\/li\u003e\n  \u003cli\u003eFood processing and pasteurization thermal logging.\u003c\/li\u003e\n  \u003cli\u003eWater and wastewater flow and pressure data logging.\u003c\/li\u003e\n  \u003cli\u003eHVAC and environmental chamber monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003cstrong\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003c\/strong\u003e\n      \u003cstrong\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/strong\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eOmron\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eModel Number\u003c\/td\u003e\n      \u003ctd\u003eCJ1W-AD04U\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Series\u003c\/td\u003e\n      \u003ctd\u003eCJ Series\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInput Points\u003c\/td\u003e\n      \u003ctd\u003e4 channels\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInput Isolation\u003c\/td\u003e\n      \u003ctd\u003eChannel-to-channel isolation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSignal Ranges (Voltage)\u003c\/td\u003e\n      \u003ctd\u003e0 to 5 V, 1 to 5 V, 0 to 10 V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSignal Ranges (Current)\u003c\/td\u003e\n      \u003ctd\u003e0 to 20 mA, 4 to 20 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRTD Inputs Supported\u003c\/td\u003e\n      \u003ctd\u003ePt100, JPt100, Pt1000\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eThermocouple Inputs Supported\u003c\/td\u003e\n      \u003ctd\u003eK, J, T, L, R, S, B\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConversion Speed\u003c\/td\u003e\n      \u003ctd\u003e250 ms for 4 inputs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePlatinum Resistance Accuracy\u003c\/td\u003e\n      \u003ctd\u003e+\/-0.3% of PV or +\/-0.8 degC (whichever is larger) +\/-1 digit max\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eThermocouple Accuracy\u003c\/td\u003e\n      \u003ctd\u003e+\/-0.3% of PV or +\/-1.5 degC (whichever is larger) +\/-1 digit max\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVoltage\/Current Input Accuracy\u003c\/td\u003e\n      \u003ctd\u003e+\/-0.3% of F.S. +\/-1 digit max\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eExternal Connection Type\u003c\/td\u003e\n      \u003ctd\u003eRemovable terminal block\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Unit Numbers Allocated\u003c\/td\u003e\n      \u003ctd\u003e1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n      \u003ctd\u003e0.32 A at 5 VDC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eShipping Weight\u003c\/td\u003e\n      \u003ctd\u003eApproximately 2.0 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Ensure the PLC rack power is completely switched off before mounting or removing the module from the CJ-series backplane.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Route analog input signal cables separately from high-voltage AC power lines and motor drive cables to prevent electromagnetic interference.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShielding:\u003c\/strong\u003e Use shielded twisted-pair cabling for all analog inputs, grounding the shield at the PLC end only.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal Block:\u003c\/strong\u003e Ensure the removable terminal block is fully seated and the retention screws are tightened to prevent accidental disconnection.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":53077913502059,"sku":"CJ1W-AD04U","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/cj1w-ad04u-1xzvkl2k0d2.png?v=1775733491","url":"https:\/\/www.plcprotech.com\/products\/omron-cj1w-ad04u-cj-series-isolated-type-universal-input-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}