Description
EPRO MMS6110 is a high-precision dual-channel vibration monitoring module part of the MMS6000 machine protection system, originally developed by Epro (now part of Emerson). This module is specifically designed to measure shaft vibration (relative vibration) in large rotating machinery such as steam turbines, gas turbines, and compressors. It processes signals from two independent displacement sensors (eddy current probes), providing real-time data on shaft position and dynamic movement. By utilizing advanced filtering and signal conditioning, the MMS6110 ensures the mechanical integrity of critical assets by detecting malfunctions like unbalance, misalignment, or bearing wear before they lead to catastrophic failure.
Technical Specifications
- Model Number: MMS6110
- Channels: 2 independent relative vibration channels
- Sensor Compatibility: Eddy current displacement sensors (PR6422, PR6423, PR6424, PR6425)
- Measurement Range: Typically 0-100 µm to 0-500 µm (Configurable)
- Outputs: Two 0/4-20 mA proportional outputs and buffered raw sensor signals
- Logic Inputs: Channel inhibit and Alert/Danger bypass
- Relays: Integrated limit value monitoring with programmable delay
- Communication: RS-232 configuration interface on the front panel
- Power Supply: +24 VDC (Typical from rack)
- Operating Temp: -10°C to +65°C
The EPRO MMS6110 acts as a frontline defense for high-speed turbomachinery, offering robust diagnostic capabilities through its buffered outputs, which allow technicians to perform detailed orbital or FFT analysis without interrupting the primary protection loop.
Model Comparison: MMS6110 vs. Similar Models
The MMS6110 is frequently compared to the MMS6120, but the primary distinction lies in their measurement focus. While the MMS6110 is dedicated to relative shaft vibration (displacement), the MMS6120 is designed for absolute bearing vibration (seismic/velocity). Compared to the MMS6210, which handles axial shaft displacement (thrust position), the MMS6110 focuses on the radial movement within the bearing. Furthermore, unlike the newer A6110 modules used in the CSI 6500 series, the MMS6110 retains full backward compatibility with legacy MMS6000 19-inch racks. It also differs from the MMS6140 speed monitor in that it prioritizes waveform analysis over pulse counting, making it the standard choice for monitoring the hydrodynamic stability of fluid-film bearings.
