Emerson A6110 dual-channel shaft relative vibration monitor module for AMS 6500 Machinery Health Monitor, API 670 compliant turbomachinery protection spare for steam turbines and centrifugal compressors.

Product Overview

• Part No: A6110
• Brand: EMERSON

• Category: Dual-Channel Shaft Relative Vibration Monitor Module A6110 is a single-slot plug-in monitor module designed for Emerson AMS 6500 Machinery Health Monitor system and fully compliant with API 670 machinery protection standards. It receives signals from non-contact eddy current proximity probes to continuously measure shaft relative vibration, which reflects rotor vibration relative to bearing housing and serves as critical monitoring parameter for sleeve-bearing rotating equipment such as steam turbines, gas turbines and large compressors. The module supports two independent measurement channels. Real-time vibration data is compared with configurable alert and danger setpoints to trigger relay alarm outputs and protection interlocks. Buffered raw sensor signals, 4–20mA analog outputs and 0–10VDC voltage outputs are available for data transmission to DCS systems. Front panel LED indicators display channel health and alarm status for on-site inspection. It supports hot-swap replacement and acts as essential maintenance spare for power plant and petrochemical turbomachinery condition monitoring systems.

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Core Features

• Two independent input channels for eddy current proximity transducer signals
• Specialized for shaft relative vibration measurement of sleeve-bearing rotating machinery
• Supports peak-to-peak and Smax combined measurement modes
• Configurable alert and danger alarm thresholds for each channel
• Buffered raw sensor signal outputs for offline vibration spectrum and orbit analysis
• Dual analog output options: 0/4–20mA DC and 0–10VDC voltage signals
• Front panel LED indicators for channel normal status, alert and danger alarms
• Hot-swap capable for online maintenance without system shutdown
• Built-in comprehensive self-diagnosis covering hardware, power supply, sensor and cable faults
• RS-232 interface for module parameter configuration and status retrieval
• Compact 3U single-slot structure to save cabinet installation space

• Robust hardware design suitable for continuous long-term industrial operation

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Technical Specifications

• Input Type: Non-contact eddy current proximity probe signal
• Channel Count: 2 independent channels
• Frequency Range: 1 Hz ~ 2000 Hz
• Analog Output: 0/4–20mA DC, 0–10VDC
• Sensor Supply: -26.7 VDC
• Power Consumption: Max 6W, 250mA @ 24VDC
• Communication: RS-232 for parameter configuration
• Form Factor: Single slot for AMS 6500 rack
• Operating Temperature: 0°C ~ +65°C
• Storage Temperature: -30°C ~ +85°C

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with Emerson AMS 6500 Machinery Health Monitor rack system
• Matches PR6422, PR6423, PR6424, PR6425 series eddy current proximity sensors
• Widely deployed in thermal power plants, combined-cycle power stations, oil & gas and petrochemical industries
• Applied for continuous vibration monitoring and protection of steam turbines, gas turbines and centrifugal compressors