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Home ⊙ NEWS ⊙ Woodward GS-Series (GS40/50) Fuel Metering Valves On-board Driver
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Woodward GS-Series (GS40/50) Fuel Metering Valves On-board Driver

From:Woodward | author:Mr.Chen | Time :2025-07-08 | 17 view: | Share:

On-board Driver

The valve driver and wiring terminal box are integral with the valve assembly,

eliminating interconnecting wiring, reducing package size requirements, and

lowering the installed cost. The on-board driver can be interfaced to the turbine

control via redundant 4–20 mA input and feedback signals, through redundant

CANopen control networks, or through redundant real-time Ethernet networks. The

GS-Series can be configured to accept both the 4–20 mA signal and CANopen/RT

Ethernet position command in a redundant configuration. With this arrangement, if

either demand signal fails, the driver will switch to the healthy input demand signal.

The valve driver operates with a 90-150 VDC or 18-32 VDC power supply,

depending on the model.

The on-board valve driver performs the following functions:

• Fast and accurate closed loop position control of the gas valve in response to the 4–20 mA or CANopen/RT

Ethernet input command signal

• Actual valve position feedback via 4–20 mA or CANopen/RT Ethernet

• Independent remote shutdown input

• Valve/driver fault output

The driver includes protection and alarm indications for the following faults:

• Analog input out of range

• Feedback—open wire and short

• Input power out of range

• Position error

• Internal driver faults

• Actuator open/short

• Driver overcurrent

All faults are available through the CANopen/RT Ethernet connection or through an Ethernet Service connection.

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