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MMS6210 | EPRO Dual Channel Shaft Displacement Monitor MMS6000 TSI Module
Manufacturer:EPRO
model name：MMS6210
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
MMS6210 | EPRO Dual Channel Shaft Displacement Monitor MMS6000 TSI Module
Overview
The MMS6210 is a hot-swappable single-slot rack module within the EPRO (Vibro-Meter / Emerson) MMS6000 Turbine Supervisory Instrumentation (TSI) machinery protection system. It is designed for high-precision measurement of axial thrust position, radial shaft displacement and differential thermal expansion, accepting input signals from EPRO eddy current proximity probe assemblies: PR6422, PR6423, PR6424, PR6425, PR6426 paired with CON series preamplifiers.
This module has two fully independent measurement channels. Users can configure each channel for single-channel absolute displacement reading, or combine both channels to calculate differential expansion for rotor and casing thermal growth monitoring. Fully compliant with API 670 turbomachinery protection standard, it safeguards gas turbines, steam turbines and centrifugal compressors against excessive axial thrust and rotor movement.
MMS6210 supports hot-swap replacement and redundant 24VDC power supply, enabling online maintenance without shutting down the whole MMS6000 rack. Original production is discontinued (EOL). We supply fully tested surplus and refurbished MMS6210 spare modules for drop-in replacement for power generation, oil & gas and heavy industrial TSI racks.
Core Features
Dual independent eddy current input channels: Two galvanically isolated proximity probe inputs for axial thrust, radial shaft displacement and differential expansion monitoring
Dual measurement modes: Single-channel absolute displacement or two-channel differential calculation for thermal expansion monitoring
API 670 compliance: Designed to meet API 670 requirements for turbomachinery safety protection and interlock
Hot-swap capability: Module can be removed and replaced online without powering down the MMS6000 rack
Redundant DC power input: Dual 24VDC power supply inputs eliminate single-point power failure for safety-critical protection loops
Extended sensor & hardware self-diagnostics: Continuous monitoring for cable break, short circuit, signal out-of-range and internal module faults
Built-in sensor linearization: Compensates non-linear characteristics of eddy current probes to maintain high measurement precision
Onboard historical data storage: Saves vibration and displacement profiles during machine startup and coast-down for post-fault diagnosis
Dual serial communication: Front-panel RS232 for local parameter setup; rear RS485 bus for connection to MMS6850 diagnostic system and plant SCADA/DCS
Dual analog outputs: 4–20mA and 0–10VDC per channel for transmitting real-time displacement values to control systems
Dual-level relay alarms: Independent Alert and Danger SPDT dry-contact relay outputs per channel for machinery trip interlock
Password protected configuration: Multi-level access lock prevents unauthorized modification of alarm and trip setpoints
Working Principle
The MMS6210 receives gap voltage signals from eddy current proximity probes mounted near the rotating shaft. Eddy current probes convert the physical gap between probe tip and shaft surface into a proportional analog voltage signal.
The module’s internal linearization processor compensates raw probe signals and converts them into accurate displacement values. Operators configure Alert and Danger thresholds separately for each channel. When shaft axial thrust or radial displacement exceeds preset safety limits, the module activates relay contacts to trigger safety trip interlock and protect the turbine or compressor from catastrophic damage.
Built-in diagnostic logic continuously checks sensor cable integrity, probe gap window and module hardware health. Fault conditions are indicated via front-panel LEDs and transmitted over RS485 bus to plant DCS or MMS6850 diagnostic software. The two channels can be paired for differential calculation to monitor thermal expansion difference between rotor and casing.
Application Fields
Steam & Gas Turbine TSI Protection: Power plant turbine thrust bearing axial position and radial shaft displacement monitoring
Oil & Gas Centrifugal Compressors: Rotor axial thrust monitoring and safety interlock for process compressors
Hydroelectric Generating Units: Shaft displacement and thrust position monitoring for hydro turbine rotors
Heavy Industrial Rotating Equipment: Large fans, pumps and turbo machinery condition protection
MMS6000 Rack Spare Replacement: Direct drop-in spare part for existing EPRO MMS6000 TSI racks
Predictive Maintenance & Fault Diagnosis: Thrust position trending, rotor thermal expansion monitoring for early warning of thrust bearing wear
Product Advantages
Axial thrust & radial displacement measurement: Specialized for rotor position monitoring, complements MMS6110 shaft vibration and MMS6120 bearing vibration modules to form complete TSI protection system.
Hot-swap rack design: Online module replacement without rack shutdown, minimizing plant maintenance downtime.
Redundant power supply: Dual power input design improves reliability for safety-critical protection loops.
Built-in probe linearization: Eliminates eddy current probe non-linearity error to guarantee high measurement precision.
Dual-channel differential calculation: Supports differential expansion monitoring for rotor and casing thermal growth.
Native MMS6000 integration: Standard single-slot MMS6000 form factor, direct drop-in replacement for failed MMS6210 units.
Comprehensive self-diagnostics: Automatically detects broken sensor cables, short circuits and signal out-of-range faults for fast on-site troubleshooting.
Package & After-Sales
Every MMS6210 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 MMS6210 modules with 12-month warranty. Our engineering team provides compatibility verification, parameter configuration guidance and spare part replacement consultation for MMS6000 TSI machinery monitoring racks. Global shipping available.
FAQ
Q1: What sensors are compatible with MMS6210?
A: It works with EPRO PR6422, PR6423, PR6424, PR6425, PR6426 eddy current probes together with CON series preamplifiers.
Q2: What is the difference between MMS6210 and MMS6110?
A: MMS6110 measures shaft relative vibration; MMS6210 measures axial thrust position and radial shaft displacement. They are commonly used together in turbine TSI systems.
Q3: Does MMS6210 support hot swap?
A: Yes, hot-swap is supported in MMS6000 rack, you can replace the module without powering down the monitoring rack.
Q4: Can two channels work in differential mode?
A: Yes. The two channels can be combined for differential expansion calculation between rotor and casing.
MMS6210
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!!!
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Contact phone number: 15359213550
