Product Short Description
Product Series
EPRO MMS6000 Rack-Based Machinery Protection Monitoring System
Product Brief
2-channel rack-mounted protection monitor for shaft vibration and bearing vibration measurement on rotating industrial machinery, providing continuous real-time monitoring, alarm threshold logic and relay fault output for safety trip interlock systems.
Description
Technical Specifications
- Measurement Channels: 2 independent simultaneous vibration input channels
- Supported Sensor Types: Eddy current proximity probes, piezoelectric velocity sensors, accelerometers
- Measurement Range: Displacement 0–800 μm, Velocity 0–80 mm/s, Acceleration 0–80 g
- Frequency Response Bandwidth: 1 Hz to 10 kHz
- Accuracy Class: ±1 % full scale measurement tolerance
- Power Supply: DC 24 V rack bus backplane power feed
- Output Interfaces: 4 x isolated relay alarm contacts, 2 x 4–20 mA analog retransmission outputs, RS485 Modbus RTU digital communication
- Form Factor: 3U Eurocard rack plug-in module
- Operating Temperature: 0 °C to +60 °C
Functional Features
- Independent configurable alarm and danger trip threshold per channel with time delay filtering
- True RMS vibration value calculation and peak-to-peak displacement signal processing
- Isolated analog retransmission output for PLC/SCADA system data acquisition
- Modbus RTU digital interface for remote parameter configuration and historical value retrieval
- Relay contact interlock output for machinery emergency trip safety circuits
- Built-in channel breakage detection for sensor cable fault automatic alarm trigger
Structural Characteristics
- Module housing: Aluminum extrusion shielded enclosure for internal circuit EMI protection
- Backplane connector: DIN 41612 industrial Eurocard edge connector
- Front panel: Digital LED display for live vibration value, channel select buttons, alarm reset button
- Internal circuit: Galvanic isolation between sensor input, power supply and communication circuits
Working Principle
Receives analog vibration waveform signals from field transducers; analog front-end circuit amplifies and filters raw sensor signals, digital DSP computes vibration magnitude metrics, compares measured values against user-configured threshold limits to activate alarm/trip relay outputs and transmit measurement data via communication bus.
Advantage Highlights
- Dual channel simultaneous monitoring reduces rack slot count for multi-bearing machinery setups
- Galvanic full isolation eliminates ground loop measurement distortion between machine and control rack
- Compatible with all standard rotating machinery vibration sensor technologies
- Hard relay trip contacts provide fail-safe safety interlock independent of digital communication links
- Modbus digital connectivity enables full integration into plant distributed control systems
Applicable Industries
Steam/gas power turbine protection, centrifugal compressor monitoring, refinery pump condition surveillance, paper mill dryer roll vibration monitoring, steel mill rolling mill machinery protection
Installation Requirements
- Install module within EPRO standard 19-inch 3U MMS6000 rack chassis
- Wire sensor input cables to isolated front terminal blocks; separate signal wiring from power wiring
- Connect relay trip contacts in series with machinery emergency shutdown safety circuit
- Terminate RS485 Modbus bus with 120 Ω end-of-line resistor at last module on communication chain
Operation Precautions
- Perform full threshold calibration after sensor installation or replacement
- Maintain cabinet ambient temperature below +60 °C to prevent measurement drift
- Test relay alarm and trip function monthly via module front-panel simulation mode
- Use only EPRO factory-specified shielded sensor cables to meet measurement accuracy specifications
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