EPRO MMS3110/022-000 Vibration Monitoring Module

The EPRO MMS3110/022-000, also cataloged as the MMS3110 Vibration Monitoring Module, operates as a dedicated hardware component for non-contact shaft vibration and displacement measurement within turbomachinery protection platforms. Designed to interface directly with PR6422 through PR6426 series eddy current probes via CON04x signal converters, the module conditions high-frequency inductive field variations into standardized voltage signals for host monitoring racks.

Hardware Specifications

Rotor Dynamics & Eddy-Current Probe Scaling

High-speed turbomachinery analysis relies on calibrated eddy-current probe scaling tuned to target shaft metallurgy across a 0 to 20 kHz frequency bandwidth (-3 dB). Field verification utilizes static gap voltage validation (-10 VDC targets) measured across the module output terminals to ensure sensor installation at the center of the dynamic voltage range (-2 VDC to -18 VDC or -4 VDC to -20 VDC). Orthogonal installation of dual-channel probe configurations maintains high cross-talk suppression during dynamic shaft orbit and radial position tracking.

Frequently Asked Questions

Q: Which probe series are electrically compatible with the MMS3110/022-000 module?

A: The module directly interfaces with PR6422, PR6423, PR6424, PR6425, and PR6426 series eddy current sensors operating through CON04x series signal converters.

Q: What supply voltage configurations are supported and how do they affect output voltage scaling?

A: An input supply of -23 VDC to -32 VDC yields an output range of -4 VDC to -20 VDC, whereas an input supply of -21 VDC to -32 VDC yields an output range of -2 VDC to -18 VDC.

Q: What rise time does the signal processing path achieve during dynamic transient events?

A: The signal processing path delivers a rise time of less than 15 us, enabling immediate capture of high-frequency dynamic motion.

Field Installation Guidelines

• Enclosure Mechanical Mounting: Secure the module housing using the four included M5x20 screws, ensuring a flush metal-to-metal backplane connection to maintain structural stability under 5g vibration conditions.
• Terminal Wiring Termination: Strip conductor ends cleanly and torque screw terminals to standard specification to prevent resistive contact loss on power feed and signal output leads.
• Cable Routing and Separation: Route sensor transducer lines through grounded metallic conduit, keeping signal pairs physically isolated from high-voltage AC lines to preserve 20 kHz bandwidth integrity.
• Shield Grounding Discipline: Terminate all signal cable shields at a single point on the instrumentation panel ground bus to avoid earth current ground loops.