{"product_id":"allen-bradley-1734-vhsc-high-speed-counter-modules","title":"Allen Bradley 1734-VHSC High Speed Counter Modules","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1734-VHSC\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1734-VHSC\u003c\/strong\u003e Very High Speed Counter Module, operates as a dedicated hardware component for high-frequency pulse counting and encoder signal processing within Allen-Bradley POINT I\/O systems.\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\u003e1734-VHSC\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\u003e0.15 lbs (0.068 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e56.0 mm x 12.0 mm x 75.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e1.0 W max @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Assembly\u003c\/td\u003e\n\u003ctd\u003eTwo-module set (electronic module and terminal base assembly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e1 MHz max (differential input), 500 kHz max (single-ended input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Categories\u003c\/td\u003e\n\u003ctd\u003e5 VDC, 12 VDC, 24 VDC selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Isolation\u003c\/td\u003e\n\u003ctd\u003eScrew terminals providing chassis ground (CHAS GND) and common (C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Bus Current\u003c\/td\u003e\n\u003ctd\u003e180 mA @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Backplane Communication and I\/O Density Scaling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Velocity:\u003c\/strong\u003e Interfaces with the POINT I\/O backplane via a high-speed serial bus, delivering real-time pulse registration and frequency evaluation to the primary controller without network transmission delays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling:\u003c\/strong\u003e Constructed in a 12 mm narrow module profile to allow maximum channel density per linear DIN-rail distance, scaling system expansion inside control enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEtherNet\/IP Determinism:\u003c\/strong\u003e Direct mapping of counter accumulators, rate values, and operational flags to controller tags over EtherNet\/IP adapter modules with Requested Packet Interval (RPI) configurable down to 1.0 ms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility:\u003c\/strong\u003e Supports backplane firmware flash operations to verify consistent execution routines and operational parity across system controller upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1734-VHSC module be inserted or removed under power (RIUP)?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping is permitted only when backplane power is isolated or when operating in non-hazardous location class environments. Physical keying on the terminal base must be set correctly prior to module insertion.\u003c\/p\u003e\n\u003cp\u003eQ: What is the mechanical function of the CHAS GND and C terminals on the terminal base?\u003c\/p\u003e\n\u003cp\u003eA: The CHAS GND terminal connects directly to the mounting DIN rail to establish a high-frequency noise grounding path for shielded encoder cabling, whereas the C terminal provides a direct return path for DC sensor supplies.\u003c\/p\u003e\n\u003cp\u003eQ: What input threshold options are hardware supported by the 1734-VHSC?\u003c\/p\u003e\n\u003cp\u003eA: The module accepts differential and single-ended encoder or counter pulse signals operating across standard logic levels of 5 VDC, 12 VDC, and 24 VDC.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSecure the two-module terminal base onto a standard 35 mm DIN rail, verifying that the lower mounting latch locks completely into position.\u003c\/li\u003e\n\u003cli\u003eRoute shielded signal cables for high-speed counter inputs away from high-voltage AC lines. Terminate cable shields directly at the CHAS GND terminal on the base assembly.\u003c\/li\u003e\n\u003cli\u003eVerify that terminal wiring configuration and external power supply selections match the intended operating voltage range (5 VDC, 12 VDC, or 24 VDC) prior to energizing the backplane bus.\u003c\/li\u003e\n\u003cli\u003eTighten terminal block screws to the specified torque rating of 0.5 to 0.6 Nm to ensure gas-tight electrical contact and vibration resistance.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45327626993779,"sku":"1734-VHSC","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1734-VHSC_1200x1200_484c7fbd-6468-43ca-857f-9f1b491d4a55.jpg?v=1786068790","url":"https:\/\/www.dcssupplier.com\/products\/allen-bradley-1734-vhsc-high-speed-counter-modules","provider":"DcsSupplier Limited","version":"1.0","type":"link"}