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MMS6120 | EPRO Dual Channel Bearing Absolute Vibration Monitor MMS6000 Module
Manufacturer:EPRO
model name：MMS6120
Country of Origin: Finland (FI)
Estonia (EE)
Customized: Yes
Minimum order quantity: 1 piece
Order multiplier: 1 piece
Part type: New
WhatsApp：15359213550
WeChat：15359213550
MMS6120 | EPRO Dual Channel Bearing Absolute Vibration Monitor MMS6000 Module
Overview
The MMS6120 is a hot-swappable, single-slot rack module within the EPRO / Vibro-Meter (Emerson) MMS6000 machinery protection system. It is engineered for absolute bearing housing vibration velocity measurement, accepting input signals from EPRO electrodynamic velocity transducers PR9266, PR9267 and PR9268.
It provides two fully independent measurement channels to monitor bearing casing vibration, complying with VDI 2056, DIN 45666 and ISO 3945 standards for turbomachinery protection. The module can calculate vibration velocity RMS values, harmonic components and phase angles, with on-board storage for startup and coast-down vibration trends for post-fault analysis.
The MMS6120 features redundant 24VDC power supply and hot-swap capability, allowing replacement while the MMS6000 rack remains operational. Original manufacturing has ended (EOL). We supply fully tested surplus and refurbished MMS6120 spare modules for drop-in replacement in power generation, oil & gas and heavy rotating machinery monitoring racks.
Core Features
Dual independent measurement channels: Two isolated inputs for electrodynamic velocity sensors to measure absolute bearing housing vibration velocity
Standardized vibration calculation: Compliant with VDI 2056, DIN 45666 and ISO 3945 for rotating machinery safety protection
Hot-swap support: Module can be removed and replaced online without shutting down the entire MMS6000 rack
Redundant DC power input: Dual 24VDC power supply inputs eliminate single-point power failure risk for safety protection loops
Full sensor and hardware diagnostics: Continuous monitoring for cable break, signal out-of-range, internal watchdog and temperature faults
Advanced signal analysis: Reads vibration velocity RMS, harmonics and phase angles; stores startup / coast-down vibration history
Dual serial interfaces: Front-panel RS232 for local parameter setup; rear RS485 bus to connect to MMS6850 diagnostic system and plant SCADA/DCS
Isolated analog outputs: Per-channel 4–20mA / 0–10V analog signals for real-time vibration value transmission to control systems
Dual-level relay alarms: Independent Alert / Danger relay outputs for each channel for machinery trip interlock
Password protected configuration: Multi-level access lock prevents unauthorized modification of alarm and trip setpoints
Technical Specifications
Working Principle
The MMS6120 receives dynamic velocity signals from electrodynamic transducers mounted directly on bearing housings. Unlike the MMS6110 which measures shaft relative vibration via eddy current probes, MMS6120 captures absolute casing vibration, reflecting the vibration state of the bearing and machine housing.
The internal processor filters and computes vibration velocity RMS, harmonic values and phase angles. Users configure Alert and Danger thresholds separately for each channel. When vibration exceeds predefined limits, the module activates relay contacts to trigger machine protection interlock.
Built-in diagnostic logic continuously checks sensor cable integrity and module hardware health, and reports faults through front LED indicators and RS485 communication. It records vibration data during turbine startup and coast-down for post-event troubleshooting. Real-time vibration metrics are transmitted to DCS, SCADA or MMS6850 diagnostic software.
Application Fields
Steam & Gas Turbine Bearing Monitoring: Power plant turbine bearing housing vibration safety protection
Oil & Gas Centrifugal Compressors: Bearing vibration monitoring and safety interlock for compressors, blowers and fans
Hydroelectric Generating Units: Absolute bearing vibration measurement for hydro turbines
Heavy Industrial Rotating Equipment: Pumps, fans and centrifuges condition monitoring
MMS6000 Rack Spare Replacement: Direct drop-in spare part for existing EPRO machinery protection racks
Predictive Maintenance & Fault Diagnosis: Vibration trending, spectrum and harmonic analysis for early bearing fault warning
Product Advantages
Absolute bearing housing vibration measurement: Complementary to shaft relative vibration from MMS6110, forming complete turbomachinery protection systems.
Hot-swap rack design: Online module replacement without rack shutdown, reducing plant maintenance downtime.
Redundant power supply: Dual power input design improves reliability for safety-critical protection loops.
Harmonic and phase measurement: Supports advanced vibration diagnostics beyond simple overall vibration readings.
Native MMS6000 integration: Standard single-slot MMS6000 form factor, direct drop-in replacement for failed MMS6120 units.
Comprehensive self-diagnostics: Automatically detects broken sensor cables, signal overflow and internal hardware faults for fast on-site troubleshooting.
Package & After-Sales
Every MMS6120 module undergoes complete functional testing before shipment. Units are packed in anti-static shielding bag plus shockproof foam for secure international shipping. We supply fully inspected refurbished and surplus MMS6120 modules with 12-month warranty. Our engineering team provides compatibility verification, parameter configuration guidance and spare part replacement consultation for MMS6000 machinery monitoring racks. Global shipping available.
FAQ
Q1: What sensors are compatible with MMS6120?
A: It works with EPRO PR9266, PR9267, PR9268 electrodynamic velocity transducers for bearing housing absolute vibration measurement.
Q2: What is the difference between MMS6110 and MMS6120?
A: MMS6110 measures shaft relative vibration with eddy current probes. MMS6120 measures absolute bearing housing vibration with velocity sensors. The two modules are commonly used together in full turbine protection systems.
Q3: Does MMS6120 support hot swap?
A: Yes, hot-swap is supported inside MMS6000 rack; you can replace the module without powering down the monitoring rack.
Q4: What communication interfaces does MMS6120 have?
A: Front panel RS232 for local configuration; rear RS485 bus to connect to MMS6850 diagnostic system or plant SCADA / DCS.
Our products are widely used in CNC mechanical metallurgy, petroleum and natural gas, and petrochemical industries,
Chemical industry, paper and printing, textile printing and dyeing, machinery, electronic manufacturing, automobile manufacturing,
Plastic machinery, electricity, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution.
The quoted price is not the actual price. Please contact the shopkeeper before placing the order to confirm the price and delivery time!!!
Recommended other models：
EPRO CON021 Eddy Current Signal Converter
EPRO CON011 9200-00001 Eddy Current Signal Converter
EPRO MMS3110/022-000 Dual-Channel Bearing Vibration Monitor
EPRO IMR6000/10 System Frame
EPRO A6410 Valve and Case Expansion Monitor
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Email: changxin2025@gmail.com
Contact phone number: 15359213550
