{"product_id":"yokogawa-aep9d-analog-terminal-board","title":"Yokogawa AEP9D Analog Terminal Board","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa AEP9D\u003c\/strong\u003e, also cataloged within the \u003cstrong\u003eAEP9D\u003c\/strong\u003e instrumentation interface series, operates as a dedicated hardware component for high-density analog signal collection and terminal distribution within distributed control system networks.\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\u003eAEP9D\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\u003eApproximately 1.5 kg (3.31 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482.6 mm x 465.1 mm x 440 mm (Integrated holes for 19-inch rack mounting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Tolerances\u003c\/td\u003e\n\u003ctd\u003e±0.8 mm (for segments ≤120 mm), ±1.5 mm (combined), JEM 1459 compliant (\u0026gt;120 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Count\u003c\/td\u003e\n\u003ctd\u003e16-channel structural analog capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Type\u003c\/td\u003e\n\u003ctd\u003eM4 size mechanical screw terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Cable\u003c\/td\u003e\n\u003ctd\u003eDedicated KS1 multi-conductor connection cable assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e≥100 MΩ measured at 500 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e500 V AC for 1 minute (dielectric breakdown baseline)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Build\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating option implemented\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Protection\u003c\/td\u003e\n\u003ctd\u003eIntegrated onboard surge absorber module array\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Process Control and Networks\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop Protocol Integration:\u003c\/strong\u003e The terminal board functions as a physical interface layer routing analog instrumentation lines straight to downstream I\/O cards. The circuit board traces are optimized to permit unattenuated pass-through of high-frequency digital telemetry running on top of standard 4-20 mA HART loops, maintaining complete diagnostic connectivity without causing phase distortion or loop impedance shifts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel Isolation Protection:\u003c\/strong\u003e The electrical layout works alongside connected I\/O modules to reinforce galvanic channel-to-channel isolation boundaries. Physical spacing between trace paths prevents field ground loops, inductive cross-talk, and transient spikes from leaking across adjacent loops or migrating into the central processing backplane logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold Junction Compensation Coordination:\u003c\/strong\u003e When managing thermocouple terminations across the 16 M4 screw channels, the uniform thermal mass of the terminal board design coordinates with external cold junction compensation (CJC) sensors. This alignment guarantees precise tracking of reference junction temperatures, eliminating gradient errors across the cabinet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the ISA Standard G3 coating profile alter the hardware lifespan in harsh environments?\u003c\/p\u003e\n\u003cp\u003eA: The G3 classification signifies that the printed circuit assembly has been treated with a specialized conformal coating layer that resists severe atmospheric corrosion. This coating protects exposed copper traces and component solder joints from aggressive airborne contaminants like hydrogen sulfide (H2S), chlorine, and sulfur dioxide (SO2), preventing premature tracking failures and open circuits.\u003c\/p\u003e\n\u003cp\u003eQ: What are the engineering consequences to the instrumentation loop if an analog channel encounters a surge exceeding the integrated absorber threshold?\u003c\/p\u003e\n\u003cp\u003eA: The onboard surge absorbers clamp common-mode and differential transients to safe levels. However, a catastrophic surge (such as a direct lightning strike on an outdoor instrument run) will permanently short the absorber component to ground to save downstream DCS I\/O cards. This requires replacing the terminal module assembly, but successfully insulates the core system logic from overvoltage breakdown.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":47616610500798,"sku":"AEP9D","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-09_117-18-38.png?v=1780998768","url":"https:\/\/www.autooiltech.com\/products\/yokogawa-aep9d-analog-terminal-board","provider":"AutoOilTech Limited","version":"1.0","type":"link"}