Basic Information

Manufacturer: Emerson (EPRO division of German Emerson)

Origin: Germany

Installation Method: Standard 19-inch rack / backplane installation, supports hot swapping

Compatible Systems: Ovation DCS, MMS6000 mechanical monitoring system

Status: Active mainstream turbine mechanical protection card, key spare parts for power plants Function positioning

High-precision monitoring of rotational shaft eccentricity (bending), protecting key equipment such as steam turbines, generators, compressors, etc.

Dual-channel independent measurement, real-time output of eccentric peak-to-peak value, gap voltage, over-limit alarm / interlock

Built-in microprocessor, integrated sensor self-check, fault diagnosis, data recording

Non-contact eddy current measurement, suitable for high-speed rotating machinery, strong anti-interference

Support for online configuration, data upload to DCS, redundant power supply

Core parameters

Channel quantity: 2 channels (independent measurement)

Measurement object: radial eccentricity (bending) of the shaft, sensor gap

Sensor compatibility: EPRO PR642X series eddy current sensor + CON0X1 preamplifier

Input signal: -1 to -22VDC (eddy current sensor signal)

Output signal: 4–20mA (characteristic value), dynamic signal, alarm / relay contact

Communication interface: RS232 (panel configuration), RS485 (system communication)

Power supply: 24VDC (redundant input), power consumption ≤ 10W

Operating temperature: 0°C to 60°C; humidity: 0–95% RH (no condensation)

Measurement range: 0–500μm (adjustable), accuracy ±1%

Key signal: Support ( > 13V, used for phase synchronization)

Compatible accessories

Sensor: PR6423/PR6424/PR6425 + CON011/CON021

System: Ovation DCS, MMS6000, Bently Nevada 3500

Backplane: MMS6000 standard chassis, Ovation I/O backplane

Supplementary items: 24VDC redundant power supply, signal cable, configuration software Application fields

Thermal power / Nuclear power: Axial eccentricity protection for steam turbine generator sets

Gas turbine: Monitoring of rotor bending in gas turbines

Petrochemicals: Protection for compressors, centrifuges, and pump sets

Metallurgy / Steel: Monitoring of large motor and fan shaft systems

Water treatment: Monitoring of the status of large water pumps and turbines