{"product_id":"cj1w-da021-omron-analog-output-unit-cj-series","title":"CJ1W-DA021 Omron Analog Output Unit CJ Series","description":"\u003cp\u003eThe \u003cstrong\u003eOmron CJ1W-DA021\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eCJ1W-DA021\u003c\/strong\u003e Analog Output Unit, operates as a dedicated hardware component for digital-to-analog signal conversion and process control variable generation within CJ Series PLC backplanes.\u003c\/p\u003e\n\u003ch3\u003eProduct Designation \u0026amp; Architecture Analysis\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eOmron CJ1W-DA021\u003c\/strong\u003e occupies a single slot on CJ1G, CJ1M, CJ2M, or CJ2H CPU bus racks. Its standardized model structure highlights specific operational capabilities:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCJ1W\u003c\/strong\u003e: Dedicated I\/O module system platform for Omron CJ Series programmable controllers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDA\u003c\/strong\u003e: Digital-to-Analog hardware architecture designed for field voltage and current loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e021\u003c\/strong\u003e: Functional designator indicating 2 analog output channels with a 1\/4,000 resolution profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Bus Interface\u003c\/strong\u003e: Photocoupler isolation separates internal PLC controller signals from field wiring side circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOperational Hardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCJ1W-DA021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eOmron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Output Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Analog Outputs\u003c\/td\u003e\n\u003ctd\u003e2 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal Ranges\u003c\/td\u003e\n\u003ctd\u003e1 to 5 V, 4 to 20 mA, 0 to 5 V, 0 to 10 V, -10 to 10 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Resolution\u003c\/td\u003e\n\u003ctd\u003e1\/4,000 (16-bit binary conversion data)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Speed\u003c\/td\u003e\n\u003ctd\u003e1.0 ms per point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Accuracy (25 deg C)\u003c\/td\u003e\n\u003ctd\u003eVoltage: +-0.3% of F.S. \/ Current: +-0.5% of F.S.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Accuracy (0 to 55 deg C)\u003c\/td\u003e\n\u003ctd\u003eVoltage: +-0.5% of F.S. \/ Current: +-0.8% of F.S.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Impedance (Voltage)\u003c\/td\u003e\n\u003ctd\u003e0.5 ohm max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Output Current (Voltage)\u003c\/td\u003e\n\u003ctd\u003e12 mA per point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Load Resistance (Current)\u003c\/td\u003e\n\u003ctd\u003e600 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Internal Bus)\u003c\/td\u003e\n\u003ctd\u003e5 VDC, 120 mA max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Power Supply\u003c\/td\u003e\n\u003ctd\u003e24 VDC (+10% \/ -15%), 140 mA max.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Inrush Current\u003c\/td\u003e\n\u003ctd\u003e20 A max., pulse width 1 ms min.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Structure\u003c\/td\u003e\n\u003ctd\u003ePhotocoupler between I\/O and PLC logic (No channel-to-channel isolation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Wiring Terminals\u003c\/td\u003e\n\u003ctd\u003e18-point detachable terminal block (M3 screws)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnit Dimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e3.1 cm x 9.0 cm x 6.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnit Weight\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e2.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e15.0 cm x 11.0 cm x 8.0 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Synchronization \u0026amp; I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe module streams converted analog variables over the high-speed local backplane bus without requiring additional CPU polling cycles. Internal bus communication velocity guarantees rapid data write commands directly from allocated memory words to the digital-to-analog converter. Scaling algorithms adjust firmware register values in real time to sustain deterministic loop output states under dynamic processing loads.\u003c\/p\u003e\n\u003ch3\u003eStandard Module Package Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Omron CJ1W-DA021 Analog Output Unit\u003c\/li\u003e\n\u003cli\u003e1 x 18-point detachable terminal block with M3 screw terminals\u003c\/li\u003e\n\u003cli\u003e1 x Hardware mounting instruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Termination \u0026amp; Wiring Practices\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Screw Torque\u003c\/strong\u003e: Tighten all M3 terminal block screws to a torque rating of 0.5 N m to ensure secure connection without stripping threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Power Wiring\u003c\/strong\u003e: Wire an independent, regulated 24 VDC external power supply to the terminal block to supply output driver circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding Protocol\u003c\/strong\u003e: Use twisted-pair shielded cables for all analog voltage and current loops. Ground the shield at the module panel earth side only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Separation\u003c\/strong\u003e: Keep analog signal cables separated from AC power lines and high-frequency inverter outputs by a minimum distance of 300 mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat causes the output voltage or current to freeze when the CPU enters STOP mode?\u003c\/p\u003e\n\u003cp\u003eThe module's hold function is configured to maintain the last valid converted value. Change the memory setting to CLEAR if zero output is required during CPU stop.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan channel 1 operate in 4-20 mA mode while channel 2 operates in -10 to 10 V mode?\u003c\/p\u003e\n\u003cp\u003eYes. Each analog channel is individually configured in system memory for specific voltage or current signal ranges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs channel-to-channel isolation supported on the CJ1W-DA021 terminal block?\u003c\/p\u003e\n\u003cp\u003eNo. Photocoupler isolation exists between field circuits and the backplane logic, but there is no electrical isolation between individual output channels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is external 24 VDC power connected to the unit?\u003c\/p\u003e\n\u003cp\u003eExternal 24 VDC power must be wired directly to the designated terminals on the 18-point detachable terminal block to power the internal output stage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the CJ1W-DA021 support hot-swapping while the rack is powered?\u003c\/p\u003e\n\u003cp\u003eNo. Removing or inserting the unit while the CJ Series backplane is energized can damage module electronics and fault the controller.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the response time for both analog output channels to update?\u003c\/p\u003e\n\u003cp\u003eThe total D\/A conversion cycle time is 1.0 ms per point, resulting in a total update period of 2.0 ms for both active output points.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat load resistance limits apply when using the 4-20 mA current output range?\u003c\/p\u003e\n\u003cp\u003eThe connected load impedance must not exceed 600 ohms per current output channel to maintain calibrated signal accuracy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens if the external 24 VDC power supply drops below operating limits?\u003c\/p\u003e\n\u003cp\u003eThe module stops outputting current\/voltage signals, flags a power supply alarm in the PLC status words, and forces outputs to 0 V or 0 mA.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":47306659758253,"sku":"CJ1W-DA021","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/CJ1W-DA021_1_ba0fe8de-7c84-4731-98f6-99c505273096.jpg?v=1788155355","url":"https:\/\/www.maxwellplc.com\/ru\/products\/cj1w-da021-omron-analog-output-unit-cj-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}