{"product_id":"allen-bradley-1745-e103-slc-100-expansion-chassis","title":"Allen-Bradley 1745-E103 SLC 100 Expansion Chassis","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1745-E103\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1745-E103\u003c\/strong\u003e PLC Expansion Unit, operates as a dedicated hardware component for localized digital I\/O processing within Allen-Bradley SLC 100 platforms.\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\u003e1745-E103\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\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\u003e3.95 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard SLC 100 Chassis\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\u003eLine Voltage 100\/200 VAC, 120\/240 VAC (50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Rating\u003c\/td\u003e\n\u003ctd\u003e10-30 VAC\/DC Discrete Inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Rating\u003c\/td\u003e\n\u003ctd\u003e10-250 VAC \/ 10-125 VDC Discrete Outputs (50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctional Category\u003c\/td\u003e\n\u003ctd\u003ePLC Expansion Unit \/ Rack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eAllen-Bradley Technical Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity\u003c\/strong\u003e: Executes direct register updates across the local extension bus interface to prevent scan-time latency during discrete I\/O state evaluations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling\u003c\/strong\u003e: Increases physical rack terminal density by bridging low-voltage AC\/DC field sensors and multi-voltage load circuits directly into the base controller memory map.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1745-E103 expansion chassis be connected or disconnected while system power is active?\u003c\/p\u003e\n\u003cp\u003eA: No. Connecting or disconnecting the interconnect cable while line voltage is applied can trigger processor backplane fault trips and risk component damage.\u003c\/p\u003e\n\u003cp\u003eQ: What operational input voltage range does the 1745-E103 support on its input channels?\u003c\/p\u003e\n\u003cp\u003eA: The input channels are rated to process discrete signals operating within the 10-30 VAC\/DC voltage threshold.\u003c\/p\u003e\n\u003cp\u003eQ: Are the output contacts on the 1745-E103 restricted solely to AC loads?\u003c\/p\u003e\n\u003cp\u003eA: No. The output circuits accommodate switching for both AC loads (10-250 VAC, 50\/60 Hz) and DC loads (10-125 VDC).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDe-energize all primary line power sources (120\/240 VAC) and field supply loops before mounting or wiring the 1745-E103 unit.\u003c\/li\u003e\n\u003cli\u003eFasten the chassis firmly to the enclosure mounting panel to establish a solid physical ground connection and ensure passive heat dissipation.\u003c\/li\u003e\n\u003cli\u003eKeep field input\/output wiring separated from AC mains lines and variable frequency drive leads to reduce electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eMaintain a 2.0 in (50.8 mm) clearance above and below the chassis assembly to permit adequate thermal airflow.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45338803798131,"sku":"1745-E103","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1745-E102_588bc20c-5b2c-4e3f-9213-5bc4177d58f1.png?v=1786343865","url":"https:\/\/www.dcssupplier.com\/ar\/products\/allen-bradley-1745-e103-slc-100-expansion-chassis","provider":"DcsSupplier Limited","version":"1.0","type":"link"}