{"product_id":"epro-mms6312-dual-channel-rotational-speed-monitor","title":"EPRO MMS6312 Dual-Channel Rotational Speed Monitor","description":"\u003cp\u003eThe \u003cstrong\u003eEPRO MMS 6312\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eMMS 6312\u003c\/strong\u003e Dual-Channel Rotational Speed Monitor, operates as a dedicated hardware component for precise rotational velocity tracking and overshoot monitoring within turbo-machinery protection systems (TSI). It processes high-frequency pulsed inputs generated by proximity sensor systems to execute real-time speed calculation and machine protection loops.\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\u003eMMS 6312\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEPRO (Philips \/ Emerson)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany (DE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eNet weight: Approx. 320 g \/ Gross weight: Approx. 450 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eEURO card format: 100 x 160 mm (Width: 30.0 mm \/ 6 TE, Height: 128.4 mm \/ 3 HE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +65 deg C (32 to 149 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-30 to +85 deg C (-22 to 185 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSourced via backplane chassis rack distribution infrastructure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Inputs\u003c\/td\u003e\n\u003ctd\u003e2 independent differential inputs for pulse sensors (PR 6422\/.. to PR 6425\/.., PR 9376\/, PR 6453\/)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Supply\u003c\/td\u003e\n\u003ctd\u003eSeparate buffered sensor supply voltage per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency Range\u003c\/td\u003e\n\u003ctd\u003e0 to 20,000 Hz (Configurable up to max. 65,535 RPM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e0 +\/- 27.3 VDC (Max permissible range: 0 to 30 V, +\/-26.75 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Inputs\u003c\/td\u003e\n\u003ctd\u003eBinary logic inputs for alarm reset, optocoupler mode selection, and alarm inhibit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Capacity\u003c\/td\u003e\n\u003ctd\u003eNom. 20 mA \/ Max. 35 mA available current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eModule: IP 00 \/ Front Plate: IP21 according to DIN 40050\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTurbo-Machinery Monitoring and Eddy-Current Sensor Interface\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEddy-Current Probe Scaling and Signal Processing:\u003c\/strong\u003e The monitor incorporates dual independent differential input channels optimized for low-noise interface with PR-series eddy-current proximity sensor systems. The internal transceiver modules support precise pulse tracking across an input frequency scale of 0 to 20,000 Hz, applying automated noise-rejection filters to incoming wave shapes down to a 2 V minimum input tracking threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor Dynamics and Real-Time Speed Calculation:\u003c\/strong\u003e Designed to prevent destructive overspeed conditions on critical industrial shafts, the module executes real-time mathematical frequency translations up to 65,535 RPM. Dedicated internal buffered supply circuits isolate each sensor line, ensuring localized sensor field shorts do not corrupt the primary rotor velocity calculation or interfere with parallel protection metrics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the MMS 6312 module be hot-swapped inside a live 19-inch sub-rack without interrupting parallel processing cards?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The structural EURO card interface configuration allows standard insertion and extraction while the master rack remains energized. However, hot-swapping this card instantly drops the speed tracking loop for its assigned channels, meaning all associated overspeed trip relays must be placed in a safe bypass state prior to mechanical extraction.\u003c\/p\u003e\n\u003cp\u003eQ: How do the control binary inputs handle false alarm latching during machine run-up phases?\u003c\/p\u003e\n\u003cp\u003eA: The board provides dedicated physical control logic inputs to inhibit alarms during planned operational critical speeds (critical speed masking). Additionally, a common binary logic input handles the direct clearing of latched trip arrays once the tracked parameter returns to standard nominal values below the configured trip limit.\u003c\/p\u003e","brand":"BOSCH","offers":[{"title":"Default Title","offer_id":45139768344691,"sku":"MMS6312","price":410.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-06-10_16-08-52_3eb67f31-5fe9-4aec-a4a3-957b4c80319c.png?v=1782705392","url":"https:\/\/www.dcssupplier.com\/products\/epro-mms6312-dual-channel-rotational-speed-monitor","provider":"DcsSupplier Limited","version":"1.0","type":"link"}