{"product_id":"yokogawa-aai135-h00-k4a00-analog-input-module","title":"Yokogawa AAI135-H00\/K4A00 Analog Input Module","description":"\u003cp\u003eThe Yokogawa AAI135-H00\/K4A00 is an 8-channel analog input module designed to receive 4 to 20 mA current signals from field instruments. It provides isolated input channels, HART digital communication, and an input-to-system withstand voltage of 500 V AC for 1 minute. The K4A00 option specifies a KS Cable Interface Adapter, model ATK4A-00, for the cable connection interface.\u003c\/p\u003e\n\u003ch3\u003eFunctional Description\u003c\/h3\u003e\n\u003cp\u003eThe AAI135-H00\/K4A00 converts field current signals into input data for the Yokogawa control system. Its eight input channels accept standard 4 to 20 mA signals, allowing multiple transmitters to be connected through one module.\u003c\/p\u003e\n\u003cp\u003eThe H suffix identifies the HART communication configuration. HART uses digital communication superimposed on the conventional 4 to 20 mA current loop, allowing compatible field devices to exchange additional digital information while retaining the analog measurement signal.\u003c\/p\u003e\n\u003ch3\u003eChannel Isolation and Electrical Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe module provides isolated input channels, with a specified withstand voltage of 500 V AC for 1 minute between input and system, and between input channels. These isolation characteristics define the electrical separation between the input circuits and system circuitry, as well as between individual input channels.\u003c\/p\u003e\n\u003cp\u003eThe allowable input current is 25 mA. Input resistance varies with the operating condition: when powered on, it ranges from 290 ohm at 20 mA to 450 ohm at 4 mA. When power is off, the input resistance is 500 kohm or greater.\u003c\/p\u003e\n\u003ch3\u003eK4A00 Cable Interface Configuration\u003c\/h3\u003e\n\u003cp\u003eThe K4A00 option specifies a KS Cable Interface Adapter, identified as ATK4A-00. This adapter is part of the specified connection configuration and should be considered when checking replacement requirements or confirming the existing cabinet wiring arrangement.\u003c\/p\u003e\n\u003cp\u003eThe complete ordering number AAI135-H00\/K4A00 should be retained when identifying this configuration, rather than treating it as a generic AAI135 module.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eAAI135-H00\/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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module (Current Input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Input Channels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Configuration\u003c\/td\u003e\n\u003ctd\u003eIsolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Input Current\u003c\/td\u003e\n\u003ctd\u003e25 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Communication\u003c\/td\u003e\n\u003ctd\u003eHART protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance (Power ON)\u003c\/td\u003e\n\u003ctd\u003e290 ohm at 20 mA to 450 ohm at 4 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resistance (Power OFF)\u003c\/td\u003e\n\u003ctd\u003e500 kohm or greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-16 uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstand Voltage (Input to System)\u003c\/td\u003e\n\u003ctd\u003e500 V AC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstand Voltage (Between Input Channels)\u003c\/td\u003e\n\u003ctd\u003e500 V AC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Interface Adapter\u003c\/td\u003e\n\u003ctd\u003eATK4A-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eModel Configuration\u003c\/h3\u003e\n\u003cp\u003eThe ordering number identifies the module and its specified communication and cable interface configuration.\u003c\/p\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAAI135\u003c\/td\u003e\n\u003ctd\u003e8-channel, isolated 4 to 20 mA analog input module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH\u003c\/td\u003e\n\u003ctd\u003eDigital communication with HART protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e00\u003c\/td\u003e\n\u003ctd\u003eBasic type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eK4A00\u003c\/td\u003e\n\u003ctd\u003eKS Cable Interface Adapter configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eATK4A-00\u003c\/td\u003e\n\u003ctd\u003eAssociated KS Cable Interface Adapter model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the AAI135-H00\/K4A00 support HART communication?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The H suffix identifies the HART communication configuration. It supports digital communication over the 4 to 20 mA current loop, in addition to the analog input signal.\u003c\/p\u003e\n\u003cp\u003eQ: Are the eight input channels electrically isolated?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module specifies isolated input channels, with a withstand voltage of 500 V AC for 1 minute between input channels. It also specifies 500 V AC for 1 minute between the input and system circuits.\u003c\/p\u003e\n\u003cp\u003eQ: Which cable interface adapter is specified for the AAI135-H00\/K4A00?\u003c\/p\u003e\n\u003cp\u003eA: The K4A00 option specifies the KS Cable Interface Adapter ATK4A-00. This model should be checked when verifying the cable interface configuration for a replacement module.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":69298029625586,"sku":"AAI135-H00\/K4A00","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/5589\/5794\/files\/AAI135-H00K4A002.jpg?v=1794453982","url":"https:\/\/www.petrospare.com\/products\/yokogawa-aai135-h00-k4a00-analog-input-module","provider":"Petro Spare Industrial Limited","version":"1.0","type":"link"}