1. Product Description The WOODWARD 9905-969 is a high-performance analog input module designed for industrial automation systems, offering 6 channels for precise signal acquisition. Ideal for applications in power generation, oil & gas, and marine environments, this module supports 4–20 mA analog current inputs with 12-bit resolution and ±0.1% accuracy, ensuring reliable measurement of parameters like pressure, temperature, and flow. Built for durability, it operates across a wide temperature range (-40°C to +70°C) and features IP20 protection against dust and limited water exposure. Its Modbus RTU compatibility simplifies integration with control systems, enabling seamless data communication.
2. Key Technical Parameters
Parameter
Specification
Module Type
6-Channel Analog Input
Input Range
4–20 mA DC
Supply Voltage
24 VDC
Resolution
12 bits
Accuracy
±0.1% full scale
Communication
Modbus RTU
Operating Temperature
-40°C to +70°C
Storage Temperature
-55°C to +125°C
Dimensions
22 x 11.5 x 7 cm
Weight
0.54 kg
WOODWARD 9905-969
3. Advantages and Features
High Precision: 12-bit resolution and ±0.1% accuracy ensure reliable data acquisition.
Wide Environmental Range: Operates in extreme temperatures and IP20-rated conditions.
Flexible Connectivity: Modbus RTU support for easy integration with PLCs and control systems.
Space-Saving Design: Compact form factor suitable for DIN rail mounting.
Low Power Consumption: Efficient 24 VDC operation reduces energy costs.
4. Application Fields and Case Studies
Power Generation: Monitors steam turbine performance in thermal power plants.
Oil & Gas: Tracks pressure in drilling platforms and refineries.
Manufacturing: Controls conveyor systems in automotive assembly lines.
Case Study: A North American power plant reduced maintenance costs by 20% using the 9905-969 to monitor boiler pressure fluctuations.
5. Competitor Comparison The 9905-969 stands out with its combination of 6-channel density, wide temperature tolerance, and Modbus RTU compatibility, surpassing many modules that require additional signal converters or offer limited environmental ratings.
WOODWARD 9905-969
6. Selection Recommendations
Signal Requirements: Confirm 4–20 mA input compatibility with sensors.
Environmental Conditions: Consider optional enclosures for outdoor or corrosive environments.
System Integration: Ensure Modbus RTU support matches your control network.
Redundancy: Pair with backup modules for critical operations.
7. Precautions
ESD Protection: Use antistatic measures during installation.
Voltage Stability: Maintain a clean 24 VDC power supply to avoid signal errors.
Wiring: Shield cables to minimize electromagnetic interference.
Firmware Updates: Regularly update firmware for optimal performance.
Shanxi Xinye Da International Trade Co., Ltd. is your trusted partner for WOODWARD 9905-969 and other automation spare parts. Visit www.xydcontrol.com or contact us for sales and technical support.
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