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EPRO A6824 MMS 6000 ModBus Axial Shaft Monitor Module

EPRO A6824 MMS 6000 ModBus Axial Shaft Monitor Module

  • Manufacturer: EPRO

  • Product No.: A6824

  • Condition：in Stock

  • Product Type: Dual Differential Expansion Monitor

  • Product Origin: Germany

  • Payment:T/T, Western Union

  • Weight: 1000g

  • Shipping port: Shanghai/Yiwu/Shenzhen

  • Warranty: 12 months

Product Description

Overview

The EPRO A6824 is a high-precision, dual-channel Axial Shaft Position and Differential Expansion Monitor designed for critical rotating machinery. This module ensures reliable, non-contact measurement of shaft axial displacement (thrust) and rotor-to-casing differential growth, safeguarding turbines, compressors, and pumps from mechanical failure. The module integrates seamlessly with MMS6000 rack systems and supports ModBus communication for easy system integration.

Key Features

  • Dual-Channel Axial Monitoring:
    Redundant sensors for thrust monitoring or independent channels for differential expansion measurement.

  • High-Speed Trip Logic:
    Emergency shutdown triggers in milliseconds if axial displacement exceeds safety thresholds.

  • Precision Gap Sensing:
    Eddy current probes provide linear displacement measurements, with electronic zeroing for simplified installation.

  • Advanced Diagnostics:
    Continuous sensor supervision, cable health monitoring, and latching alarm memory for transient events.

  • Flexible Integration:
    Analog outputs (0/4–20 mA) and buffered raw signals for DCS or diagnostic equipment. RS232/485 interfaces allow full configuration of ranges, delays, and hysteresis.

  • Industrial Durability:
    Operates in harsh environments with wide temperature range, vibration/shock resistance, and robust ModBus communication.

Technical Specifications

Feature Specification
Model A6824 / MMS 6000
Module Type Dual-Channel Axial Shaft & Differential Expansion Monitor
Sensor Input Eddy Current Sensors (PR6423, PR6424)
Measurement Modes Axial Thrust, Differential Expansion, Shaft Position
Sensitivity 2 V/mm (50.8 mV/mil) ±1.5%
Air Gap Nominal 5.5 mm (0.22 in)
Static Range 4 mm (0.157 in)
Target Material Ferromagnetic steel (42CrMo4 standard)
Max Shaft Speed 2500 m/s (98425 in/s)
Operating Temp -35°C to 180°C (-31°F to 356°F)
Temperature Drift <0.39% over 4 hours at 200°C (392°F)
Vibration & Shock 5G at 60 Hz, IEC standards
Accuracy ≤ ±1% Full Scale
Response Time <100 ms for alarm triggering
Outputs 2 × Analog (4–20 mA), 2 × Buffered Raw, 3 × Relays (Alert/Danger/OK)
Mounting MMS6000 19-inch rack system
Communication ModBus RTU/ASCII, RS232/485

Applications

  • Thrust Bearing Monitoring: Prevents axial contact in turbines or compressors.

  • Differential Expansion Tracking: Detects rotor-casing growth during thermal cycles.

  • Machine Protection Systems: Triggers rapid shutdown to prevent mechanical damage.

  • Industrial Diagnostics: Buffered signals for vibration analyzers or advanced monitoring tools.

FAQ

Q: Can this module be used for both axial thrust and differential expansion?
A: Yes, dual channels allow independent operation or redundant monitoring depending on application.

Q: What sensor types are compatible?
A: PR6423 or PR6424 eddy current probes.

Q: How fast does the module react to unsafe shaft movement?
A: Emergency trip relays respond in under 100 milliseconds.

Q: How is the module integrated with control systems?
A: Analog 4–20 mA outputs and RS232/485 ModBus allow full system integration.

Q: Is electronic zeroing required for sensor installation?
A: Yes, the module supports electronic zeroing to simplify setup and improve accuracy.

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A6824 Differential Expansion Monitor EPRO
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