{"product_id":"honeywell-621-0000-analog-input-module","title":"Honeywell 621-0000 Analog Input Module","description":"\u003ch1\u003eHoneywell 621-0000 Analog Input Module\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell 621-0000\u003c\/strong\u003e is an 8-channel analog input module designed for voltage signal acquisition in Honeywell IPC 620, TDC 2000, and TDC 3000 control systems. The module converts multiple field analog signals into digital process data for controller processing, supporting several bipolar and unipolar voltage ranges to accommodate different instrumentation requirements.\u003c\/p\u003e\n\u003ch3\u003eSignal Acquisition Capabilities\u003c\/h3\u003e\n\u003cp\u003eThe module provides eight independent analog input channels for monitoring process variables transmitted as DC voltage signals. Multiple input ranges allow the same module type to be applied across different measurement points without requiring separate hardware versions for each signal level.\u003c\/p\u003e\n\u003cp\u003eFor current-based instruments such as 4-20 mA transmitters, signal conversion through an external precision resistor may be required because the module is designed for voltage input measurement.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"___1vyiefv f1ddd56o f16vktn6 f1ahpp82 f11qra4b f1uinfot fibjyge fvueend f9yszdx f1fu4s3n f3l3pb3 f10ghnd0 f8fmt76 fjvbh62 f1qrqxae f1vw5qpk fc02sbz fxawf59 fymf513 f1aoyrul f1el8yx3 f1pymoxg f1ofu761 fe6itr f7coize f1794535 f1o0pw0q fbjjl9v fk1v6el f16pyhcb f1ixlhx9 f12zef0i flu5r5u f19haqzy f1owmcxx f1oddm8q f1004tna fcoaxci fh0ee9u f15v23i2 f1dmj53 f1r1gcv9 f14z1veh ffufd3x f1ypplot f1660cg\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e621-0000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e8 analog input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e0-10 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e-10 VDC to +10 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e0-5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e-5 VDC to +5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Time\u003c\/td\u003e\n\u003ctd\u003e75 us per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;= +\/-0.4% of full scale at 25 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eHoneywell IPC 620, TDC 2000, TDC 3000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Type\u003c\/td\u003e\n\u003ctd\u003eRack-mounted module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eBackplane-powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eTypical \u0026lt; 5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indication\u003c\/td\u003e\n\u003ctd\u003eFront-panel LED indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e145 x 100 x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.39 kg (0.86 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eConversion Performance\u003c\/h3\u003e\n\u003cp\u003eThe module incorporates a 12-bit conversion architecture with a conversion time of 75 us per channel. This combination provides sufficient resolution for process monitoring applications while allowing rapid scanning of multiple analog inputs.\u003c\/p\u003e\n\u003cp\u003eAn accuracy specification of up to +\/-0.4% of full scale at 25 deg C supports reliable acquisition of process measurements within the calibrated operating range.\u003c\/p\u003e\n\u003ch3\u003eSystem Integration\u003c\/h3\u003e\n\u003cp\u003eThe 621-0000 is designed for rack-mounted installation and receives operating power directly from the system backplane. This arrangement simplifies wiring requirements and allows the module to be integrated into existing Honeywell controller racks without a dedicated external power connection.\u003c\/p\u003e\n\u003cp\u003eCompatibility with IPC 620, TDC 2000, and TDC 3000 platforms makes the module suitable for maintaining and expanding legacy Honeywell automation systems.\u003c\/p\u003e\n\u003ch3\u003eDiagnostics and Maintenance\u003c\/h3\u003e\n\u003cp\u003eFront-panel LED indicators provide basic operational and diagnostic information. These indicators assist maintenance personnel in verifying module status and identifying potential power or communication issues during commissioning and troubleshooting.\u003c\/p\u003e\n\u003cp\u003eBecause analog measurements are processed through independent input channels, channel-level signal verification can be performed without affecting the acquisition capability of other inputs.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the Honeywell 621-0000 accept 4-20 mA transmitter signals directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The published input ranges are voltage-based. When a 4-20 mA signal must be measured, an external precision resistor is typically used to convert the current signal into a compatible voltage input.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many field signals can the module monitor simultaneously?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The module provides eight independent analog input channels, allowing up to eight analog voltage signals to be monitored within a single module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which Honeywell control systems support the 621-0000 module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The module is specified for use with Honeywell IPC 620, TDC 2000, and TDC 3000 control systems, subject to the applicable rack and system configuration requirements.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":67800582652003,"sku":"621-0000","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/621-2201_2.png?v=1789714541","url":"https:\/\/precisemodule.com\/products\/honeywell-621-0000-analog-input-module","provider":"Precise Module Ltd.","version":"1.0","type":"link"}