{"product_id":"ax521-1sap-250-100-r0001-analog-i-o-module-abb","title":"AX521 1SAP 250 100 R0001 Analog I\/O Module ABB","description":"\u003ch2\u003e\u003cstrong\u003eABB AX521 Analog Input\/Output Module – 1SAP 250 100 R0001\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Inputs:\u003c\/strong\u003e The module features 4 bipolar analog inputs configurable for 0-10V, -10-10V, 0-20mA, 4-20mA, Pt100, Pt1000, or Ni1000 sensors. Each input can be set independently for your specific application needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Outputs:\u003c\/strong\u003e It provides 4 analog outputs configurable for -10-10V, 0-20mA, or 4-20mA signals. The current outputs support loads from 0 to 500Ω, while voltage outputs drive up to ±10 mA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution and Accuracy:\u003c\/strong\u003e The system delivers 12-bit resolution for all ranges, with a typical conversion error of ±0.5% at 25°C. The maximum error remains within ±1% across the entire 0°C to 60°C operating temperature range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Processing:\u003c\/strong\u003e The input filter time constant is 100 µs for voltage and current signals. The conversion cycle takes 2 ms for all 8 inputs and outputs combined, extending to 1 second for Pt\/Ni temperature measurements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications and Environmental Tolerance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Voltage:\u003c\/strong\u003e The module operates on a 24V DC supply with a maximum ripple of 5%. It includes reverse polarity protection and a 10A fast-acting fuse on the UP terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanic Isolation:\u003c\/strong\u003e The \u003cstrong\u003e1SAP 250 100 R0001\u003c\/strong\u003e provides isolation between the channels and the I\/O bus. It does not isolate channels from each other or from the process supply voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e The module operates reliably from 0°C to 60°C in horizontal mounting. Vertical mounting reduces the output load to 50% per group at 40°C and above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Tolerance:\u003c\/strong\u003e It withstands humidity up to 95% without condensation. The unit tolerates storage and transport temperatures from -40°C to 70°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMC and Protection:\u003c\/strong\u003e The module maintains accuracy within ±1% even under EMC disturbances. It features overvoltage protection on all input channels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I connect a Pt100 sensor directly to this module?\u003c\/strong\u003e\u003cbr\u003eYes, the inputs support 2-wire and 3-wire Pt100, Pt1000, and Ni1000 connections with individual channel configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What happens if I leave unused inputs open?\u003c\/strong\u003e\u003cbr\u003eConfigure unused voltage inputs as \"unused\" to avoid interference. Unused current inputs have low resistance and can remain open-circuited safely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does the module provide isolation between channels?\u003c\/strong\u003e\u003cbr\u003eNo, the \u003cstrong\u003eAX521\u003c\/strong\u003e does not isolate channels from each other. It does provide isolation between the channels and the I\/O bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the inrush current at power-up?\u003c\/strong\u003e\u003cbr\u003eThe inrush current from UP at power-up is 0.020 A²s. Consider this value when sizing your power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I use the analog inputs as digital inputs?\u003c\/strong\u003e\u003cbr\u003eYes, you can configure each analog input as a digital input with a configurable delay of 0.1 to 32 ms and a threshold of 13V for signal 1.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfooter\u003e\n\u003cp\u003e© 2026 NexAuto Technology Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\u003cbr\u003ePhone: \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/footer\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":48245030519042,"sku":"AX521","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/AX521_2.jpg?v=1785738493","url":"https:\/\/www.nex-auto.com\/products\/ax521-1sap-250-100-r0001-analog-i-o-module-abb","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}