{"product_id":"omron-cj1w-da021-sysmac-cj1-series-analog-output-unit","title":"Omron CJ1W-DA021 Sysmac CJ1 Series Analog Output Unit","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned for direct integration into Sysmac PLC architectures, the \u003cstrong\u003eOmron CJ1W-DA021\u003c\/strong\u003e is a high-performance, dual-channel digital-to-analog conversion module. It enables precise control of external actuators, variable frequency drives, and process equipment by converting digital processor values into industry-standard analog signals. The module features robust \u003cstrong\u003ephotocoupler isolation\u003c\/strong\u003e between the internal controller CPU backplane and external field connections, shielding sensitive logic circuits from field-side electrical disturbances. With an integrated 18-point detachable terminal block, maintenance engineers can swap modules without disconnecting field wiring, minimizing operational downtime in continuous process environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Independent Output Channels:\u003c\/strong\u003e Supports independent configuration for both voltage and current outputs across two distinct field connections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Range Flexibility:\u003c\/strong\u003e Software-selectable output signal ranges including 1 to 5 V, 0 to 5 V, 0 to 10 V, bipolar -10 to 10 V, and 4 to 20 mA.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFail-Safe Output Hold Function:\u003c\/strong\u003e Configurable recovery behavior (CLR, HOLD, or MAX) to preserve, clear, or maximize output signal states if the controller CPU encounters an error or stops executing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Resolution:\u003c\/strong\u003e Operates at an industrial-grade conversion resolution of 4,000 (1\/4000) for smooth ramp profiles and precise valve positioning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetachable Terminal block:\u003c\/strong\u003e 18-point M3 screw terminal layout simplifies cabinet pre-wiring and field module swaps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eSpeed referencing for Variable Frequency Drives (VFDs) and servo controller velocity loops.\u003c\/li\u003e\n  \u003cli\u003ePositioning and flow adjustment for pneumatic and hydraulic proportional control valves.\u003c\/li\u003e\n  \u003cli\u003eSet-point configuration feed to discrete temperature controller units and recording devices.\u003c\/li\u003e\n  \u003cli\u003eSimulating transducer signals during commissioning of remote supervisory control systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eValue \/ Detail\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eOmron\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCJ1W-DA021\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModule Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Output Unit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNumber of Outputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2 channels\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eAnalog Signal Formats\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e1 to 5 V, 0 to 5 V, 0 to 10 V, -10 to 10 V, 4 to 20 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eD\/A Conversion Resolution\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e4,000 (16-bit binary data representation)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eConversion Speed\u003c\/td\u003e\n        \u003ctd style=\"padding: 1.0 ms per point (2.0 ms total cycle for both channels active)\"\u003e1.0 ms per point\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eAccuracy (at 25 degC)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eVoltage: +\/-0.3% of F.S. | Current: +\/-0.5% of F.S.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eAccuracy (0 to 55 degC)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eVoltage: +\/-0.5% of F.S. | Current: +\/-0.8% of F.S.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eIsolation Mechanism\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003ePhotocoupler isolation between controller backplane and outputs; no isolation between channels\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eExternal Power Supply\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e24 VDC (+10% \/ -15%), 140 mA max (Inrush: 20 A max, pulse width 1 ms min)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eInternal Power Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e5 VDC, 120 mA max\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutput Impedance (Voltage)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.5 Ohms max\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eMax Load Resistance (Current)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e600 Ohms max\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eJapan\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.35 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e11.5 cm x 10.5 cm x 4.5 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe module interface uses an 18-point detachable terminal block setup. Terminal assignments must align strictly with the target signal type to prevent internal component fatigue.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eTerminal Connection\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eSignal Allocation \/ Function\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eA1 \/ B1\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eExternal Power Supply Input (+24 VDC \/ 0 V Ground)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eA3 \/ A4\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eChannel 1 Voltage Output (+) \/ Output Common (-)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eA5 \/ A4\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eChannel 1 Current Output (+) \/ Output Common (-)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eB3 \/ B4\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eChannel 2 Voltage Output (+) \/ Output Common (-)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eB5 \/ B4\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eChannel 2 Current Output (+) \/ Output Common (-)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe CJ1W-DA021 shares form-factor and configuration parameters with standard CJ1, CJ2, and NJ controller backplanes (when utilized with an EtherCAT or EtherNet\/IP bus coupler). It serves as a direct drop-in replacement for legacy CJ1W analog variants. However, verify the CPU allocated memory map registers (CIO area), as older program structures might require address validation depending on the unit number assigned via the front-panel rotary switch.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eNote that there is no electrical isolation between Channel 1 and Channel 2 outputs on this unit; both share a common ground reference (Output Common). If connecting to two field instruments with differing ground references, ground loop currents can corrupt analog signals or damage the output stage. Ensure field instruments have isolated inputs or use external signal isolators to maintain loop integrity.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo mitigate electromagnetic interference in high-noise environments (such as proximity to active VFD switchgear), always use shielded twisted-pair (STP) cabling for the analog loops. Ground the cable shield strictly at the PLC enclosure ground panel and leave the instrument end ungrounded to prevent ground loops. Never route analog output cables inside the same wire duct as high-voltage AC power lines.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e Ensure all power to the PLC rack and the external 24 VDC field supply is completely disconnected before mounting, unmounting, or wiring the module. Hot-swapping the module can cause latch-up conditions or permanent damage to the CPU backplane logic.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eSet the Unit Number rotary switch on the front panel of the CJ1W-DA021 using a small flathead screwdriver. This allocation must match the hardware configuration in CX-Programmer or Sysmac Studio.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eMount the module onto the CJ-series backplane, aligning the bottom hook and snapping the top locking mechanism firmly into place. Secure the yellow slide locks to ensure mechanical stability.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eWire the external 24 VDC power supply to terminals A1 (+) and B1 (-) to energize the conversion circuitry, then wire the analog load loops according to the designated voltage or current terminals.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":53077907472747,"sku":"CJ1W-DA021","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/cj1w-da021-gmw2odeegaf.png?v=1775733500","url":"https:\/\/www.plcprotech.com\/products\/omron-cj1w-da021-sysmac-cj1-series-analog-output-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}