ALSTOM N897066510E / N897066010M / N897066000A AOVD Series
The ALSTOM AOVD series comprises high-precision analog output and valve driver modules designed for demanding industrial automation applications. These modules convert digital control signals into analog current or voltage outputs to drive actuators, positioners, and control valves with exceptional accuracy.
Key Features
16-bit resolution for high-precision control
Output ranges: 0-20 mA, 4-20 mA, 0-10 V (selectable per channel)
Integrated HART modem for smart device communication
Galvanic isolation: 2.5 kV between channels and system
Diagnostic functions: open-loop detection, short-circuit protection, under/overrange alarms
Redundant output capability for critical applications
Technical Specifications
Number of channels: 8 (N897066510E), 4 (N897066010M), 2 (N897066000A)
Accuracy: ±0.05% of span at 25°C
Temperature drift: ±50 ppm/°C
Update rate: 1 ms per channel
Load impedance: 0-750 Ω (current mode), ≥10 kΩ (voltage mode)
Communication interface: Profibus DP, Modbus RTU, or proprietary backplane
Power consumption: 5 W max per module
Applications
The AOVD modules are employed in power plants, oil & gas facilities, chemical processing, and water treatment systems. Typical uses include controlling steam turbine valves, damper actuators, chemical dosing pumps, and variable frequency drives. They are also ideal for retrofitting analog control loops in legacy systems.
Integration and Diagnostics
These modules seamlessly integrate with major DCS and PLC platforms. Advanced diagnostic features allow predictive maintenance by monitoring valve health, detecting stiction, and generating alerts before failures occur. The modules support hot-swapping, minimizing downtime during replacement.
Ordering Information
Model N897066510E offers eight fully isolated analog outputs; N897066010M provides four outputs with enhanced diagnostics; N897066000A is a compact two-channel version. All variants share the same firmware and configuration tools, simplifying engineering and sparing.
With their robust design and precise control, ALSTOM AOVD modules ensure optimal process performance and reliability in critical industrial environments.
