{"product_id":"psccm22aan-yokogawa-prosafe-plc-series-datasheet-technical-manual","title":"PSCCM22AAN Yokogawa ProSafe-PLC Series Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eYokogawa PSCCM22AAN ProSafe-PLC Critical Control Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa PSCCM22AAN\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003ePSCCM22AAN\u003c\/strong\u003e Critical Control Module, serves as the primary \u003cstrong\u003ePSCCM22\u003c\/strong\u003e Safety CPU utilized to execute emergency shutdown (ESD) and high-integrity interlock functions across ProSafe-PLC safety instrumented system platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\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\u003ePSCCM22AAN (Revision 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e5.1 cm x 25.4 cm x 30.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +60 deg C (Storage range: -40 to +85 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC Nominal (+-10% range); Rated at 0.60 A (Maximum operational load: \u0026lt;= 10 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchitecture\u003c\/td\u003e\n\u003ctd\u003eDual-processor safety execution engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Integrity Level\u003c\/td\u003e\n\u003ctd\u003eSIL3 certified (Compliance parameters: IEC 61508 \/ IEC 61511)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Capacity\u003c\/td\u003e\n\u003ctd\u003e8 MB RAM + 2 MB Flash memory matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal Interface Bus\u003c\/td\u003e\n\u003ctd\u003eIntegrated ProSafe-PLC backplane communication busway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus TCP (Ethernet Interface) and Modbus RTU (RS-485 Serial)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Protection\u003c\/td\u003e\n\u003ctd\u003eIndustrial-grade metal housing rated to IP20 status\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSafety Instrumented System (SIS) Properties\u003c\/h3\u003e\n\u003cp\u003eThe Yokogawa PSCCM22AAN is a SIL3-certified core safety CPU that utilizes dual-processor redundancy loops to manage critical process inputs without single points of hardware failure. The internal architecture uses a fault-tolerant design that combines separate hardware-level diagnostics with automated fail-safe state execution mechanisms. Rather than operating as a general-purpose signal conditioner, the module evaluates Boolean ladder logic and function block diagrams (FBD) through synchronized processing pipelines, running millisecond-level safety MCU scans to enforce real-time self-diagnostics, galvanic isolation limits, and automatic failover routines across the safety network.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the internal processor arrangement maintain SIL3 certification constraints during an active component fault?\u003c\/p\u003e\n\u003cp\u003eA: The module executes safety logic inside a dual-processor architecture where both 32-bit RISC processing tracks cross-check calculations on every instruction cycle. If a mismatch is detected, the internal hardware diagnostics trigger a fail-safe state execution, transferring control to a redundant module or forcing outputs to a predetermined de-energized shutdown status.\u003c\/p\u003e\n\u003cp\u003eQ: Can the PSCCM22AAN execute diagnostic passthrough functions for field smart instrumentation?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The safety CPU backplane architecture supports HART protocol data streams from field devices. This configuration allows asset management software to pull instrument health, valve signatures, and diagnostic registers directly through the module without interfering with the primary safety logic execution.\u003c\/p\u003e\n\u003cp\u003eQ: What are the electrical power constraints regarding the dual redundant input feeds for this safety CPU?\u003c\/p\u003e\n\u003cp\u003eA: The module operates on a nominal 24 VDC line with a continuous current draw of 0.60 A. The backplane interface contains redundant input routing diode arrays, allowing the unit to draw balanced current from two separate utility feeds to ensure continuous operation if one power source drops out.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Slot Mechanical Seating:\u003c\/strong\u003e Guide the IP20 metal chassis carefully into the designated slot of the primary ProSafe-PLC rack assembly. Push the module firmly inward until the backplane multi-pin array locks completely, then hand-tighten the integrated upper and lower mounting screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedundant Feed Cable Routing:\u003c\/strong\u003e Connect the primary and secondary 24 VDC power lines through separate wire ducts. This physical separation prevents a single localized cabinet fire or electrical short from disabling both power inputs simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Framework:\u003c\/strong\u003e Terminate all serial RS-485 and Modbus TCP communication cable shields at the primary instrumentation grounding bus of the local enclosure panel. Maintain a clean, single-point ground connection to avoid creating ground loops that could disrupt high-speed data transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management Clearance:\u003c\/strong\u003e Ensure all top and bottom convection cooling louvers on the rack enclosure remain unobstructed. Maintaining an unblocked vertical airflow path keeps ambient temperatures within the -20 to +60 deg C operating limits, protecting the internal components from premature degradation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43497952608346,"sku":"PSCCM22AAN","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/359._fcadfd7c-9092-4621-9e2c-2a39dc3393ec.jpg?v=1781514885","url":"https:\/\/www.spareoil.com\/products\/psccm22aan-yokogawa-prosafe-plc-series-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}