MMS6110 is a core component of the epro MMS6000 system and belongs to the dual-channel shaft vibration monitoring module, which is used to measure the relative radial shaft vibration and displacement of rotating machinery. The module supports online replacement, has redundant power input and extended self-checking functions, and is suitable for condition monitoring and protection systems of large rotating equipment such as steam turbines, compressors, and fans.
Data Sheet：
EPRO MMS6110 Dual Channel Shaft Vibration Monitor.pdf
Technical Parameters
Parameter Category Detailed Specifications
Sensor Input - Input resistance: >100 kΩ
- Input voltage range: 0–20 VDC
- Frequency range: 1/5 Hz – 5000 Hz
Sensor Power Supply - Independent power supply per channel: -28 VDC (nominal), max. 35 mA
- Short-circuit/open-circuit protection
Control Input - 24 V logic level, input resistance >10 kΩ
- Supports range multiplication (1.0000–4.4999x)
Power Supply - Redundant inputs: 18–31.2 V DC (compliant with IEC 654-2, Class DC4)
- Power consumption: Not specified, supports independent power supply
Mechanical Characteristics - Dimensions: 100 x 160 x 30 mm (EURO card format)
- Weight: Net 320 g, Gross 450 g
Environmental Conditions - Operating temperature: 0–65°C
- Storage temperature: -25–85°C
- Humidity: 5%–95% (non-condensing)
- Vibration/shock: Compliant with IEC 68-2 standards
Communication Protocol- RS 232/RS 485, Baud rate not specified, supports Modbus-compatible protocol
Application Industries and Scenarios
Energy and Power: Shaft vibration monitoring for steam/gas turbines and hydroturbines.
Process Industry: Health condition monitoring of compressors, centrifuges, and fans to prevent mechanical failures.
Safety Systems: Integration into turbomachine protection systems (e.g., Emergency Shutdown System, ESD) to provide vibration over-limit alarms.
Typical Applications
Real-time monitoring of shaft vibration amplitude and root mean square (RMS) values to identify faults such as unbalance, misalignment, and bearing wear.
Calculation of maximum orbital vibration with dual-channel sensors (installed at 90°) in compliance with API 670 standards.
Output of data to distributed control systems (DCS) or data analysis platforms to support remote monitoring and predictive maintenance.
Installation & Interfaces
Physical Installation
Mounting Method: 19-inch rack mounting. Each rack can accommodate up to 14 modules (28 channels).
Interface Types:
Front panel: RS 232 interface (for configuration).
Rear panel: Terminal block for connecting sensors, power supply, and output signals.
Wiring Diagram
Sensor Connection: Two eddy current sensors (SENS1/2-H/L) connect to the module terminals via dedicated cables.
Power Input: Redundant 24 V DC inputs (+24V/1, +24V/2). The ground terminal (GND) must be securely connected.
Alarm Outputs: ALERT and DANGER relay contacts can be connected to external alarm or control systems.
Communication Connection: RS 485 bus supports daisy-chaining multiple modules. A terminating resistor (e.g., 120 Ω) is required for proper termination.
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