Description

Products Description

Woodward 9907-167 505E Digital Governor is a control device used for extraction steam, extraction/steam admission, and pure steam admission steam turbines. The governor coordinates the operation of the turbine's high-pressure (HP) and low-pressure (LP) control valves, controlling the unit's speed (or load) as well as the extraction/steam admission pressure (or flow). Additionally, the governor enables the regulation and limit management of key process parameters, such as steam turbine inlet pressure and flow.

🚀Function & Features

Speed / Load Controller: The Woodward 9907-167 functions as the primary control channel, responsible for regulating the core operational parameters of the unit.

Auxiliary Controller: The 9907-167 is equipped with secondary regulation and parameter limit functions, offering protection for critical turbine process parameters.

Cascade Controller: The 9907-167 directly adjusts the speed setpoint, enabling rapid response to varying operating conditions of the unit.

Specifications

Category	Specification
Model	9907-167
Control Type	32-bit microprocessor-based
Valve Control	HP & LP valves (with linearization curves)
Speed Inputs	2 configurable channels (MPU or proximity probes)
Analog Inputs	6 total (1 isolated for self-powered signals)
Relay Outputs	8 Form-C (2 dedicated to alarm/shutdown)
Communication	• 2 Modbus ports (RS-232/422/485, ASCII/RTU protocols) • 1 PC configuration port
Display	Dual-line LCD (24 characters per line)
Power Supply	Internal 24 Vdc power for external devices: • VA1: 24 Vdc ±10%, 200 mA max • Breaker-protected outputs • Connection terminals: 55, 59, 63, 70, 74 (78 as common)

9907-167 505E

Questions & Answers

💡 FAQ

Q: Besides speed and extraction steam control, what other parameters can the Woodward 9907-167 control?

A: Woodward 9907-167 can be extended to control or limit other process parameters, such as:

Steam turbine inlet pressure

Inlet steam flow

Relevant process variables (with the integration of sensors and configuration)

Q: How does the Woodward 9907-167 governor maintain system safety?

A: Woodward 9907-167 ensures system safety through several mechanisms, including:

Valve control strategies (e.g., check valve for backflow prevention, fast shutoff valve for emergency cutoff)

Redundant control channels (e.g., main/auxiliary channel switching).

Q: What is the warranty?

A: 1 year

Q: Where is the shipping location?

A: Xiamen

Q: What is the payment method?

A: T/T

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