Product Name:Vibration Monitoring Module
Brand Name: Emerson Epro
Model Number: A6120
Country of Origin: USA
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
Emerson Epro |
Model Number: |
A6120 |
Country of Origin: |
USA |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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Send an email: |
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Contact in Whatsapp: |
The A6120 is a dual-channel case seismic vibration monitor from Emerson‘s EPRO series, engineered for absolute vibration measurement on critical rotating machinery within the AMS 6500 Machinery Health Monitoring System. The A6120 accepts inputs from electrodynamic velocity sensors, delivering precise vibration velocity and displacement data via 16-bit resolution. The A6120 provides isolated 0/4–20 mA and 0–10 V outputs, plus buffered raw signals for diagnostic access. With hot-swappable 3U rack design and API 670 compliance, the A6120 delivers reliable protection and predictive maintenance for turbines, compressors, and generators.
API 670 Compliance – Fully compliant with API 670 standards for vibration monitoring, ensuring reliability and performance in line with internationally recognized specifications.
PeakVue Bearing Fault Diagnostics – Integrated PeakVue technology extracts bearing impact pulses for early detection of rolling element bearing pitting, spalling, and gear damage, enabling predictive maintenance.
Hot-Swappable Design – Supports module replacement without system downtime, minimizing production interruptions.
Full Galvanic Isolation – 1500V RMS channel-to-backplane isolation blocks ground loops and electrical noise from VFDs and motors, ensuring clean, reliable vibration data.
Dual-Channel Independent Protection – Two fully isolated channels monitor two orthogonal directions on the same rotor, with independently configurable alert and danger setpoints.
Comprehensive Diagnostic Outputs – Front and rear buffered outputs enable external oscilloscope connection and signal distribution without disturbing the measurement loop.
Global Hazardous Area Suitability – Designed for installation in potentially explosive environments (ATEX/IECEx with appropriate sensors), suitable for offshore and refinery applications.
Two Independent Input Channels – Simultaneously monitors two vibration points (e.g., horizontal and vertical on the same bearing housing).
Wide Sensor Compatibility – Accepts electrodynamic velocity sensors PR 9266, PR 9267, and PR 9268 series.
Configurable Frequency Response – Lower cutoff selectable at 1 or 5 Hz; upper cutoff adjustable from 50 to 2000 Hz.
Multiple Output Types – Provides 0/4–20 mA proportional outputs, 0–10 V outputs, and buffered raw sensor signals.
Front Panel Status LEDs – Green OK LEDs per channel indicate module health; red Alert and Danger LEDs annunciate alarm conditions.
RS-232 Configuration Port – Enables local commissioning, setpoint adjustment, and fault data retrieval.
Remote Limit Multiply & Trip Bypass – Supports remote selectable limit multiplication and trip bypass for startup and maintenance scenarios.
Full Hardware Self-Diagnostics – Continuous monitoring of power rails, sensor integrity (open/short circuit detection), and communication pathways.
Compact 3U Form Factor – Single-slot, 30 mm width (6 TE) for space-efficient cabinet installation.
The A6120 functions as a two-channel case seismic vibration monitor within the Emerson AMS 6500 Machinery Health Monitoring System. Each independent channel accepts input from an electrodynamic velocity sensor (PR 9266, PR 9267, or PR 9268 series), which generates a voltage proportional to the absolute velocity of the bearing housing. The signal passes through surge-protected input circuits and galvanic isolation barriers (1500V RMS) to block ground loops and electrical noise.
An onboard microprocessor processes the conditioned signal through configurable filters (lower cutoff 1/5 Hz, upper cutoff 50–2000 Hz), calculates vibration amplitude values (Vrms in mm/s or in/s, and displacement in μm or mils), and runs PeakVue analysis for bearing fault detection. Threshold logic compares readings against configured Alert and Danger setpoints.
The processed data is output as isolated 0/4–20 mA and 0–10 V analog signals for integration with DCS or SCADA systems. Buffered raw sensor signals are available via front and rear connectors for external diagnostic equipment. The module communicates via RS-232 for local configuration and Modbus TCP/IP for network integration. Continuous hardware self-diagnostics monitor sensor integrity (open/short detection), power rails, and communication pathways. Dual-redundant Modbus RTU/TCP communication transmits vibration amplitudes, peaks, PeakVue bearing characteristic values, and fault SOE (Sequence of Events) data.
Q1: What is the primary function of the A6120 vibration monitor?
A1: The A6120 is a dual-channel case seismic vibration monitor that measures absolute bearing housing vibration on critical rotating machinery such as steam turbines, gas turbines, compressors, and generators, providing alarm and trip protection per API 670 standards.
Q2: Which sensors are compatible with the A6120?
A2: The A6120 accepts electrodynamic velocity sensors from the PR 9266, PR 9267, and PR 9268 series.
Q3: What is the frequency range of the A6120?
A3: The standard frequency range is 10 to 1000 Hz. The lower cutoff can be configured to 1 or 5 Hz, and the upper cutoff is adjustable from 50 to 2000 Hz.
Q4: Is the A6120 compliant with industry standards?
A4: Yes. The A6120 is fully compliant with API 670 and VDI 2059 standards for vibration monitoring.
Q5: Does the A6120 support online replacement?
A5: Yes. The A6120 is hot-swappable, allowing module replacement without powering down the system or interrupting machine protection.
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