{"product_id":"yokogawa-aap135-s53-k4a00-centum-vp-pulse-input-module","title":"Yokogawa AAP135-S53\/K4A00 CENTUM VP Pulse Input Module","description":"\u003ch2\u003eYokogawa AAP135-S53\/K4A00 Pulse Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AAP135-S53\/K4A00\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAAP135\u003c\/strong\u003e Pulse Input Module, operates as a dedicated hardware component for pulse counting and frequency measurement within Yokogawa CENTUM VP and CS 3000 distributed control systems. Configured with 8 galvanically isolated input channels, the module processes pulse trains ranging from 0 to 10 kHz generated by turbine meters, Coriolis flowmeters, and rotary encoders. The unit includes the factory-installed ATK4A-00 KS cable interface adapter (\/K4A00), enabling direct signal routing to external terminal boards via standard KS cable assemblies.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix \/ Option Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunctional Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAAP135\u003c\/td\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003e8-channel isolated pulse input module (0 to 10 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e-S\u003c\/td\u003e\n\u003ctd\u003eStandard Type\u003c\/td\u003e\n\u003ctd\u003eStandard operational signal range and response processing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eNon-Explosionproof\u003c\/td\u003e\n\u003ctd\u003eStandard enclosure design without explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eSpecial Specification\u003c\/td\u003e\n\u003ctd\u003eSpecialized hardware variant\/conformal coating specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\/K4A00\u003c\/td\u003e\n\u003ctd\u003eInterface Adapter Option\u003c\/td\u003e\n\u003ctd\u003eIncludes ATK4A-00 KS cable adapter for direct connection to terminal boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003eAAP135-S53\/K4A00\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\u003e0.3 kg net (1.5 kg shipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 mm W x 30 mm H x 100 mm D\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive input processing (drawn via backplane bus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8 isolated pulse channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e0 to 10 kHz per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Types\u003c\/td\u003e\n\u003ctd\u003eContact ON\/OFF, Voltage pulse, Current pulse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Pulse Width\u003c\/td\u003e\n\u003ctd\u003e40 us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and module-to-system, 500 VAC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Interface\u003c\/td\u003e\n\u003ctd\u003eK4A00 terminal block or MIL connector via ATK4A-00 KS adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Channel-to-Channel Isolation Integration\u003c\/h3\u003e\n\u003cp\u003eThe AAP135-S53\/K4A00 pulse input module incorporates 500 VAC channel-to-channel galvanic isolation barriers to prevent noise coupling across high-density I\/O racks. When installed alongside analog I\/O modules operating on 4-20 mA HART loop protocol carrier frequencies, the isolated input stage eliminates ground loops and suppresses high-frequency common-mode interference. The high-speed optocoupler circuitry captures steep square waves and mechanical contact transitions down to a minimum pulse width of 40 us, preserving precise totalizer counts and CJC (cold junction compensation) reference accuracy across adjacent process measurement channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What minimum pulse width is required for the AAP135-S53\/K4A00 to reliably register high-frequency signals?\u003c\/p\u003e\n\u003cp\u003eA: The onboard signal conditioning logic requires a minimum pulse width of 40 us per transition across its 0 to 10 kHz operating frequency range to ensure complete pulse detection and accurate counter register updates.\u003c\/p\u003e\n\u003cp\u003eQ: How does the \/K4A00 option code affect field wiring connections?\u003c\/p\u003e\n\u003cp\u003eA: Option code \/K4A00 integrates the ATK4A-00 KS cable interface adapter directly onto the front connector of the module, converting individual wire terminal connections into a dedicated cable interface compatible with Yokogawa terminal boards.\u003c\/p\u003e\n\u003cp\u003eQ: Is channel-to-channel isolation present across all 8 pulse inputs?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module features complete individual channel-to-channel and channel-to-system galvanic isolation rated at 500 VAC for 1 minute, isolating distinct field transmitters from potential ground loop voltages.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface Adapter Seating:\u003c\/strong\u003e Secure the ATK4A-00 KS adapter locking tabs firmly onto the module front connector before inserting the card into the CENTUM VP I\/O backplane slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding Terminal:\u003c\/strong\u003e Terminate all pulse transmitter cable shields to the cabinet ground bar at one end only to prevent noise induction on high-frequency (10 kHz) signal lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Separation Bounds:\u003c\/strong\u003e Route field pulse input wiring in separate wire channels away from high-voltage AC lines or inductive motor control wiring by a minimum distance of 300 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse Signal Level Verification:\u003c\/strong\u003e Confirm that incoming voltage or contact pulse amplitudes meet the input threshold limits prior to system commissioning to avoid dropped pulse counts.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43796415578202,"sku":"AAP135-S53\/K4A00","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/447._cfaa7d17-89c2-4ebd-8643-d6b0a21fb1c4.jpg?v=1786067846","url":"https:\/\/www.spareoil.com\/ar\/products\/yokogawa-aap135-s53-k4a00-centum-vp-pulse-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}