Description
EMERSON A6220 is a high-performance dual-channel shaft eccentricity vibration monitor designed for critical rotating machinery in industries such as power generation, oil & gas, and petrochemicals. As part of the AMS 6500 Machinery Health Monitor System, this module provides real-time monitoring of shaft eccentricity, thermal expansion, and axial displacement to prevent equipment failures and optimize maintenance strategies. Its compact 3U form factor and hot-swappable design enable seamless integration into existing systems, while advanced diagnostics and API 670 compliance ensure reliability in harsh industrial environments.
The
A6220 serves as a cornerstone of predictive maintenance programs, offering precise measurements of shaft eccentricity (up to ±25 mm) and thermal expansion (0–50 mm) using
eddy current sensors (e.g., PR 6422/6423 series) and
linear variable differential transformers (LVDTs). It features
dual independent channels for simultaneous monitoring of two shafts, with built-in self-checking capabilities to detect sensor or cable faults. The module supports
4–20 mA analog outputs and
RS-485/Modbus communication, enabling integration with distributed control systems (DCS) and condition monitoring software like Emerson’s AMS Suite.
Key functionalities include:
- API 670 Compliance: Ensures adherence to industry standards for machinery protection.
- Hot-Swappable Design: Reduces downtime during module replacement or upgrades.
- Wide Temperature Range: Operates from -40°C to +85°C, suitable for extreme environments.
- User-Configurable Alarms: Adjustable setpoints and hysteresis for alert/danger thresholds.
| Parameter |
Specification |
| Input Type |
Eddy current sensors (PR 6422/6423), LVDTs (e.g., TD-2 series) |
| Measurement Range |
Shaft eccentricity: ±25 mm; thermal expansion: 0–50 mm |
| Excitation |
1500 Hz, 10–20 VAC |
| Outputs |
2 × 4–20 mA analog; RS-485/Modbus RTU |
| Power Supply |
24 VDC ±10%, 5.5 W power consumption |
| Dimensions |
30 mm (W) × 128.4 mm (H) × 160 mm (D) (1.18″ × 5.05″ × 6.3″) |
| Weight |
0.3 kg (0.66 lb) |
| Certifications |
CE, RoHS, IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT) |
EMERSON A6220
-
Precision Monitoring:
- 16-bit ADC resolution and 0.15% linearity error ensure accurate measurements of shaft misalignment or bowing.
- Example: A petrochemical plant reduced unplanned downtime by 40% after detecting a cracked gear tooth 72 hours before failure using A6220-monitored eccentricity data.
-
Redundancy and Reliability:
- Dual-channel architecture eliminates single points of failure in mission-critical applications.
- Galvanic isolation protects against voltage spikes and electromagnetic interference (EMI).
-
Ease of Integration:
- Native Modbus support allows direct connection to PLCs or SCADA systems without additional gateways.
- Front-panel LEDs provide real-time status updates on power, alarms, and sensor health.
-
Cost Efficiency:
- 3U size reduces cabinet space by 50% compared to traditional 6U modules.
- Self-diagnostic algorithms minimize maintenance costs by identifying faulty components early.
- Power Generation: Monitors steam turbines and generators in thermal and nuclear plants.
- Oil & Gas: Protects compressors, pumps, and offshore platforms from vibration-induced failures.
- Manufacturing: Enhances CNC machine tool reliability through predictive maintenance.
Case Study:
A wind farm deployed A6220 to monitor gearbox vibrations in 20 turbines. The module’s real-time data transmission detected a gear tooth crack 72 hours before failure, saving $500,000 in repair costs.
| Feature |
A6220 |
Typical Competitors |
| Channels |
2 (expandable) |
1–4 |
| Temperature Range |
-40°C to +85°C |
0°C to 50°C |
| Redundancy |
Built-in dual channels |
Optional add-ons |
| Integration |
Native Modbus/PROFIBUS |
Requires additional modules |
| Size |
3U (1-slot) |
6U (2-slot) |
EMERSON A6220
- Monitoring Needs:
- Choose A6220 for applications requiring dual-channel eccentricity and thermal expansion monitoring (e.g., large turbines).
- Communication:
- Pair with CPUR2/IOCR2 modules for seamless integration with Emerson’s DeltaV™ or Ovation™ systems.
- Environmental Conditions:
- Select the extended temperature version (-40°C to +85°C) for extreme climates.
- Budget:
- Opt for hot-swappable modules to reduce downtime and maintenance costs.
-
Installation:
- Use shielded cables and proper grounding to minimize EMI interference.
- Follow API 670 guidelines for sensor placement and alignment.
-
Operation:
- Do not exceed input voltage limits (24 VDC ±10%).
- Calibrate sensors annually using Emerson’s official tools.
-
Maintenance:
- Clean cooling vents quarterly to prevent overheating.
- Update firmware via Emerson’s online portal for security patches and new features.
Shanxi Xinyeda International Trade Co., Ltd. is your trusted partner for A6220 and other automation spare parts. Visit our website www.xydcontrol.com or contact us for sales and technical support.
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