General Description
The EPRO MMS6120 is a dual-channel monitoring module designed for vibration, displacement, and speed measurement in critical rotating machinery (turbines, compressors, pumps). It provides real-time monitoring, alarm triggering, and 4–20mA output for integration with control systems.

Key Parameters
Input Specifications
Channels: 2 independent monitoring channels

Compatible Sensors:

Eddy current probes (e.g., EPRO PR6423, PR6426)

Velocity sensors (e.g., seismic transducers)

Speed/Tachometer signals (pulse input)

Input Signal Range:

Displacement (Proximity Probes): -2 to -20V DC

Vibration (Velocity): 0.5–20V peak

Speed: 5–15V pulse (magnetic pickup)

Measurement Capabilities
Vibration Monitoring:

Range: 0–500 µm pk-pk (adjustable)

Frequency Band: 10 Hz–1 kHz (ISO 10816 compliant)

Displacement Monitoring:

Range: 0–2.0 mm (configurable)

Accuracy: ±1% of full scale

Speed Monitoring:

Range: 0–20,000 RPM

Resolution: 1 RPM

Outputs & Alarms
Analog Outputs: 2 channels, 4–20 mA (isolated, configurable for vibration/displacement)

Relay Outputs: 4 programmable relays (SPDT, 250V AC/2A) for alarms (Danger/Warning)

Communication:

RS-485 (Modbus RTU protocol)

Optional Ethernet (MMS6120E variant)

Power & Environmental
Power Supply: 24V DC (±10%) or 100–240V AC

Operating Temperature: -20°C to +70°C

Enclosure Rating: IP20 (panel-mounted)

Display & Interface
Front Panel: LCD with real-time values, bargraphs, and alarm status

Configuration: Keypad or software (EPRO CMS 2000 configuration tool)

Typical Applications
Turbine/compressor vibration protection

Bearing health monitoring

Integration with DCS/PLC systems

Compliance & Certifications
Standards: API 670, ISO 10816

Certifications: CE, ATEX (optional)