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Woodward 9907-167 Low-Voltage DC Digital Governor

Woodward 9907-167
Woodward 9907-167
Woodward 9907-167

Woodward 9907-167 Low-Voltage DC Digital Governor

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WOODWARD / 505E
 
9907-167
 
DIGITAL STEAM TURBINE GOVERNOR
         
A low-voltage 505E configuration for steam turbines with controlled extraction and/or admission pressure control.
505E
167
 
LVDC
18–32 VDC
THREE KEY POINTS
 
01
POWER SUPPLY
18–32 Vdc
02
CONTROL FAMILY
505E Digital Governor
03
TURBINE APPLICATION
Controlled Extraction / Admission
9907-167 is the LVDC member of the 505E 9907-165 / 9907-166 / 9907-167 family.
 
  
Choose 128 manufacturers
  
 
Miya zheng
 sales@amikon.cn ☎ 86-18020776792
WOODWARD
505E DIGITAL GOVERNOR
 Overview Technical Application FAQ Models CONTACT
 
 
 
 
 
 
 
 
WOODWARD
505E DIGITAL GOVERNOR
 LVDC CONTROL VARIANT
 
505E SERIES / DIGITAL GOVERNOR
9907-167
 
Low-Voltage DC Digital Governor for Extraction / Admission Steam Turbines

The 9907-167 is the low-voltage DC version of the Woodward 505E Digital Governor, intended for steam turbine applications requiring controlled extraction and/or admission pressure control.

POWER INPUT
18–32 Vdc
Low-voltage DC variant
POWER HOLD-UP
14 ms
505E LVDC power supply
COMMUNICATION
Modbus
RS-232 / RS-422 / RS-485
APPLICATION
Steam Turbine
Extraction / admission control
 
 
 
 
 
9907-167 / LVDC
 
 
ENGINEERING PROFILE

9907-167
built around the 505E platform.

 

The 505E combines turbine speed/load control with extraction and/or admission pressure control. The controller is configurable for different turbine arrangements and operating strategies.

For the 9907-167 variant, the primary electrical distinction is its 18–32 Vdc low-voltage input.
POWER SYSTEM
18–32 Vdc

The LVDC version uses a 6.25 A slow-blow input fuse and has a specified 14 ms power-supply hold-up time.
PROCESS CONTROL
Extraction / Admission

The 505E is intended for steam turbines where extraction and/or admission pressure control is part of the operating strategy.
COMMUNICATION
Two Modbus Ports

The communication interfaces support RS-232, RS-422 or RS-485 connections and Modbus ASCII or RTU operation.
OPERATION
Configurable Control

The 505E provides programmable control functions for turbine starting, speed/load regulation, extraction/admission control and related limiting functions.
 
 
 
 
 
 
 
9907-167

Technical
snapshot

The electrical variant is critical when selecting a replacement within the 505E family.
Manufacturer Woodward
Part Number 9907-167
Series 505E Digital Governor
Input Power 18–32 Vdc
Input Fuse 6.25 A slow-blow
Power Hold-up Time 14 ms
Communication RS-232 / RS-422 / RS-485
Protocol Modbus ASCII / RTU
Main Control Area Speed / Load / Extraction / Admission
Optional Enclosure 8923-439 NEMA 4X bulkhead-mounted enclosure
 
 
 
 
 
APPLICATION PATH

Where 9907-167
becomes critical.

 

9907-167 is used within the 505E platform for steam turbine control where a low-voltage DC supply is required and the turbine application includes controlled extraction and/or admission pressure functions.

Because the governor participates in speed/load regulation and process-related turbine control, a controller fault can have consequences beyond a single electrical component.
SCENARIO 01
Unstable speed or load behavior

When turbine speed or load regulation becomes abnormal, the 505E control path and its speed-feedback signals may become part of the troubleshooting process.

  
SCENARIO 02
Extraction / admission deviation

A deviation in extraction or admission pressure-related control can lead engineers to check the governor, configured control loops and connected field signals.
 
SCENARIO 03
Controller failure during operation

A malfunctioning governor can affect turbine availability and process stability. For a running unit, extended troubleshooting or an incorrect replacement can increase downtime exposure. Matching the exact 9907-167 LVDC variant before procurement helps reduce unnecessary replacement delays.
 
 
505E FAMILY

Same family.
Different power path.

The 9907-165, 9907-166 and 9907-167 are English 505E versions. Their principal part-number distinction is the electrical input arrangement.
MODEL INPUT POWER VARIANT
9907-167 18–32 Vdc LVDC
9907-166 88–132 Vac / 90–150 Vdc AC/DC
9907-165 180–264 Vac HVAC
For replacement selection, confirm the installed power supply before choosing another 505E part number.
CONTROL FUNCTIONS

A controller organized around turbine operating conditions.
01
Speed / Load

Speed control forms a central part of the 505E control structure and can be coordinated with load-related requirements.
02
Extraction

Extraction pressure or flow can be incorporated into the turbine control strategy according to the configured application.
03
Admission

Admission-related control allows turbine operation to coordinate process conditions with turbine speed or load requirements.
04
Limiting

The 505E provides limiter and protective control functions as part of its configured turbine operating strategy.
 
 
AMIKON / SINCE 2005

20 years of keeping automation moving.

 

Founded in Hong Kong in 2005, Amikon has grown into a global supplier focused on industrial automation components and control-system parts.

Its product range covers PLC, HMI, DCS, panel controllers, industrial PCs and VFD-related automation parts, supporting customers across different industrial environments.

20 YEARS
Experience built through long-term industrial automation service.
Amikon team
Amikon warehouse
Amikon customer group
QUOTE CHECKPOINT

Five details make 9907-167 matching easier.

When requesting a quotation, please provide the exact part number together with the quantity, destination, required date and the machine or system where the controller will be installed.

QUOTE REQUEST
Part Number · Quantity · Destination · Required Date · Machine/System
01 Part Number
02 Quantity
03 Destination
04 Required Date
05 Machine / System
DELIVERY
3–5 Days
WARRANTY
12 Months
PACKING
Brand New
DELIVERY WAY
E-packing / FedEx / EMS / TNT / DHL / UPS
PAYMENT
T/T
 
BUYER DECISION POINTS

9907-167 FAQ

These questions focus on replacement risk, electrical matching, system compatibility and practical purchasing decisions.
Why does Woodward 9907-167 need a different replacement check from other 505E models?

9907-167 is specifically the LVDC version with an 18–32 Vdc input. The 9907-165 and 9907-166 use different power arrangements, so matching the 505E family alone is not enough when replacing a controller in an operating turbine.
Why might Woodward 9907-167 be searched for during a turbine shutdown?

Because the 505E participates in turbine speed/load regulation and extraction or admission control. A failed governor can therefore affect turbine operation and process stability, making exact-part replacement important when restoring an unavailable unit.
Can Woodward 9907-167 communicate with a plant DCS without changing the governor family?

The 505E platform provides two Modbus communication ports supporting RS-232, RS-422 or RS-485, with Modbus ASCII or RTU operation. The actual DCS interface still depends on the configured turbine control arrangement and connected signals.
What should I verify on Woodward 9907-167 when the existing turbine uses a DC control supply?

Confirm that the available supply is within the 18–32 Vdc range and that the existing installation corresponds to the 9907-167 LVDC variant. Also check the turbine application, actuator arrangement, field wiring and configured control strategy before replacement.
How does Woodward 9907-167 compare with 9907-165 and 9907-166 when the same turbine application is involved?

All three belong to the 505E family for steam turbines with controlled extraction and/or admission pressure control, but their power inputs differ. 9907-167 uses 18–32 Vdc, 9907-166 uses 88–132 Vac or 90–150 Vdc, and 9907-165 uses 180–264 Vac. The electrical supply is therefore a key selection point.
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CONTACT / 9907-167

Need the correct
LVDC variant?

Send the exact part number and your machine or system details so the purchasing request can be matched more efficiently.
EMAILsales@amikon.cn
PHONE / WHATSAPP86-18020776792
SALES MANAGER
Miya zheng
AFTER DELIVERY

Return & replacement
Please contact us within 7 days after receiving the items if any issue requires attention.
Returned items should remain in their original condition and include the specific reason for the return.
After the returned item is received, an appropriate return or replacement arrangement will be issued.
Shipping costs resulting from the return are the responsibility of the buyer.
WOODWARD 9907-167
Keep the turbine control path moving.
505E Digital Governor · 18–32 Vdc · Extraction / Admission Control
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Woodward 9907-167 · 505E Digital Governor Amikon Industrial Automation Parts
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