{"product_id":"honeywell-621-1100r-8-point-vac-vdc-discrete-input-module","title":"Honeywell 621-1100R 8-Point VAC\/VDC Discrete Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 621-1100R\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e621-1100R\u003c\/strong\u003e Discrete Input Module, operates as a dedicated hardware component for high-voltage binary state detection and real-time contact status acquisition within Honeywell industrial automation systems. Designed to ingest 8 discrete input channels operating across a 90 to 140 VAC\/VDC voltage range with a current draw of 6 to 21 mA, the unit digitizes field contact positions, pressure switches, and auxiliary relay outputs. Drawing a maximum backplane operating current of 30 mA at +5 VDC, the module incorporates internal filtering logic that enforces controlled input turn-on delays of 2.4 ms ±20% and turn-off delays of 17 ms ±20% to attenuate contact bounce across field circuits.\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\u003e621-1100R\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.34 kg (0.76 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e51 mm x 241 mm x 191 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e+5 VDC at 30 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e8 points (2 commons, 4 points per common)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e115 VAC\/VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e90 to 140 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current Range\u003c\/td\u003e\n\u003ctd\u003e6 to 21 mA (12 mA typical at 115 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAllowable Off-State Leakage\u003c\/td\u003e\n\u003ctd\u003e2 mA AC \/ 3 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay (Off to On)\u003c\/td\u003e\n\u003ctd\u003e2.4 ms ±20% plus 0-0.5 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay (On to Off)\u003c\/td\u003e\n\u003ctd\u003e17 ms ±20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL508, CSA, TUV\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\u003c\/h3\u003e\n\u003cp\u003eThe 621-1100R utilizes optoelectronic isolation barriers between field-side 115 VAC\/VDC input terminals and internal +5 VDC logic buses. Arranged into two isolated groups of four channels sharing a common return line, the channel isolation topology prevents high-voltage inductive spikes from crossing into central processor backplanes. This galvanic isolation prevents switching transients on high-voltage discrete input loops from coupling onto adjacent 4-20 mA HART loop protocol signaling lines installed in parallel cabinet raceways.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 621-1100R module be hot-swapped while the rack backplane is fully energized?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module supports live insertion and removal on an energized rack, provided extraction guide tabs are pulled straight out to prevent connector pin binding.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum allowable off-state leakage current across connected field contacts?\u003c\/p\u003e\n\u003cp\u003eA: Connected field devices must not exceed an off-state leakage current of 2 mA for AC signals or 3 mA for DC signals to prevent false-on input triggering.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eAlign the module edge guide with the designated subrack card slot and slide the assembly in until the backplane connectors interface securely.\u003c\/li\u003e\n\u003cli\u003eFasten the top and bottom front panel locking screws to establish chassis frame earth grounding and prevent vibration-induced disconnection.\u003c\/li\u003e\n\u003cli\u003eWire the 115 VAC\/VDC input conductors ensuring field connections adhere to the 4-points-per-common grouping structure across both isolated commons.\u003c\/li\u003e\n\u003cli\u003eSeparate high-voltage AC\/DC field input wiring from low-level analog and communication cables within cabinet wire ducts to maintain optimal signal isolation.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53625560072501,"sku":"621-1100R","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/621-1100R.png?v=1790049721","url":"https:\/\/www.5gplc.com\/products\/honeywell-621-1100r-8-point-vac-vdc-discrete-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}