{"product_id":"bently-nevada-133442-01-3500-50m-i-o-module-with-internal-terminations","title":"Bently Nevada 133442-01 3500\/50M I\/O Module with Internal Terminations","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e133442-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a dual-channel Tachometer Input\/Output (I\/O) module designed for the 3500 Series Machinery Protection System. This module serves as the primary physical interface for field wiring, specifically engineered to operate with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500\/50\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500\/50M\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTachometer Main Modules. It processes high-frequency pulse inputs from proximity probes or passive magnetic pickups to facilitate precise measurements of rotational speed, rotor acceleration, and reverse rotation.\u003c\/p\u003e\n\u003cp\u003eAs an internal termination variant, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e133442-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efeatures integrated screw terminal blocks directly on the module body, optimizing it for high-density cabinet installations where space is a priority. This hardware configuration is widely deployed in power generation, petrochemical, and gas compression facilities for continuous machinery monitoring and critical overspeed protection.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e133442-01\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTachometer I\/O Module with Internal Terminations\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3500 Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2-channel differential or single-ended pulse inputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProximity probe systems, Magnetic pickups\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Signal Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e+10.0 Vdc to -24.0 Vdc (internally limited)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.15 kΩ (Internal Barrier variant)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e241.3 mm x 24.4 mm x 163.1 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.46 kg (1.01 lb)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-30 deg C to +65 deg C (-22 deg F to +149 deg F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP20\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cp\u003eWhen procuring spare parts, ensure the part number matches the specific rack configuration to avoid hardware\/software mismatch errors.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e133442-01\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComponent Description\u003c\/strong\u003e: 3500\/50M Tachometer I\/O Module with Internal Terminations (Internal Barrier Type)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAssociated Main Module\u003c\/strong\u003e: 3500\/50-01-XX or\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500\/50M-01-XX\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTerminal Type\u003c\/strong\u003e: Fixed screw terminal blocks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering \u0026amp; Field Wiring Guide\u003c\/h3\u003e\n\u003ch3\u003eWiring and Shielding Requirements\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCable Selection\u003c\/strong\u003e: Use twisted, shielded pair cabling (18 AWG to 22 AWG) for all transducer connections to mitigate electromagnetic interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShield Grounding\u003c\/strong\u003e: Connect shields to the designated instrument ground terminal on the 3500 rack chassis at one end only. Do not ground at the field transducer to prevent ground loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSignal Separation\u003c\/strong\u003e: Maintain a minimum distance of 300 mm (12 inches) between speed sensor cables and high-voltage AC power lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and Hot-Swap Precautions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRack Alignment\u003c\/strong\u003e: The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e133442-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emust be installed in the rear slot corresponding to the front-mounted 3500\/50M main processor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBypass Protocol\u003c\/strong\u003e: Prior to module extraction or insertion, bypass all associated machinery trip relays to prevent accidental turbine or compressor trips.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTorque Limits\u003c\/strong\u003e: Tighten terminal block screws to a maximum of 0.56 N·m (5 in·lb) to protect the internal PCB traces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 133442-01 compatible with older 3500\/50 modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it is fully backwards compatible with standard 3500\/50 and upgraded 3500\/50M modules, provided the rack configuration software matches the hardware variant.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between this and the External Termination (ET) version?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e133442-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efeatures built-in terminal blocks. The ET version requires a multi-pin cable to connect to a remote DIN-rail terminal block.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the risks of exceeding the input signal range?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile internal clipping circuits limit voltages, sustained overvoltage outside the +10V to -24V range can degrade the internal barrier circuitry and cause channel faults.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666519650667,"sku":"133442-01","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-133442-01-i-o-module-with-internal-terminations-1a4iq1cd4r4_bc83d92f-d0df-4c88-95ae-2fed0e219041.jpg?v=1765440137","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-133442-01-3500-50m-i-o-module-with-internal-terminations","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}