The EPRO MMS6823R, part of the 9100-00001-06 series, is a specialized dual-channel module designed for the MMS 6000 Machine Protection System. This module is dedicated to rotational speed measurement, providing critical data for both operational control and emergency overspeed protection. Its dual-channel architecture allows for independent monitoring of two sensors or redundant monitoring of a single shaft.
Beyond simple RPM calculation, the MMS6823R monitors shaft acceleration and detects the direction of rotation. These parameters are essential during the startup and shutdown phases of large turbines to ensure the rotor does not pass through critical speeds too slowly or rotate in reverse. The module processes pulse inputs from sensors like the PR9376/20 with high deterministic accuracy.

The MMS6823R features integrated alarm logic. Users can configure setpoints for "Alert" and "Danger" levels. If the measured speed exceeds these limits, the module triggers its onboard relays, which are typically wired into the machine's emergency trip circuit. The 9100-00001-06 revision includes enhanced diagnostic features that monitor the health of the connected sensors and the module’s own internal circuitry.
Configuration is performed via the MMS6000 software, allowing for precise adjustment of pulse-per-revolution settings and alarm hysteresis. The module transmits real-time data to the plant's DCS or SCADA system via standardized fieldbus interfaces. This transparency allows for centralized monitoring of machine health across the entire facility.
Built for the demanding environments of power plants and heavy industry, the MMS6823R is designed to operate 24/7 without interruption. Its high immunity to electrical interference and robust thermal design ensure that it remains the most reliable link in the machine protection chain, safeguarding both personnel and expensive capital equipment.



