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Woodward 8200-177 Digital Valve Positioner

Woodward 8200-177 Digital Valve Positioner

Product Description

The 8200-177 is a high-precision Digital Valve Positioner (DVP) developed by Woodward, Inc. for pneumatic actuator control in industrial process automation systems.

The module converts 4–20 mA analog or digital fieldbus...

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Availability: Low stock: 99 left

SKU: 8200-177
Vendor: Woodward
Category: Digital Valve Positioner
Related Series:

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Product Description

The 8200-177 is a high-precision Digital Valve Positioner (DVP) developed by Woodward, Inc. for pneumatic actuator control in industrial process automation systems.

The module converts 4–20 mA analog or digital fieldbus commands into accurate mechanical valve positioning using microprocessor-based control algorithms. This significantly improves control loop stability, reduces hysteresis, and provides highly linear response characteristics for fuel, steam, and fluid regulation systems.

The device features integrated self-diagnostics, enabling continuous monitoring of actuator health, pneumatic pressure conditions, and internal electronics status. Its IP66-rated enclosure provides strong protection against dust and water ingress, making it suitable for harsh industrial environments such as power plants, refineries, and chemical processing facilities.

Technical Specifications

Parameter Specification
Model 8200-177
Function Digital Valve Positioner (DVP)
Power Supply 24 VDC
Control Input 4–20 mA / Fieldbus digital commands
Actuator Type Pneumatic actuator compatibility
Position Feedback Integrated high-resolution sensor
Communication Protocols HART / Profibus PA / FOUNDATION Fieldbus
Operating Temperature –40°C to +85°C
Diagnostics Internal health and pneumatic monitoring
Mounting Options Valve-mounted or remote cable-mounted

Application

  • Gas turbine fuel control systems

  • Steam flow and pressure regulation

  • Petrochemical process control loops

  • Power plant valve automation

FAQ

Can it be mounted remotely from the valve?
Yes. Remote mounting via extension cables is supported for high-vibration or high-temperature installations.

Does it require manual calibration?
No. The module supports automatic calibration and valve stroke learning functions.

How does self-diagnostics improve safety?
It can detect air pressure loss or hardware faults and report them through the communication bus for controlled system shutdown.