9907-175 Woodward overspeed protector
The 9907-175 is a microprocessor-based digital governor controller produced by Woodward, belonging to its classic 505 series.
It is primarily designed for speed control and protection of steam turbines. Below is a detailed introduction to this product:
I. Product Overview
- Brand and Model: Woodward 9907-175
- Series: 505 Series Digital Governor
- Type: Microprocessor-based controller
- Purpose: Specifically designed for steam turbines to control their speed and provide overspeed protection.

II. Core Functions
- Speed Control:
- 9907-175 Precisely controls the speed of steam turbines by adjusting steam inlet flow.
- Supports single-range or split-range actuators to accommodate turbines of different sizes.
- Overspeed Protection:
- Incorporates triple independent overspeed protection logic to ensure rapid shutdown in case of overspeed, preventing equipment damage.
- Provides an overspeed test button for convenient on-site testing of protection functions.
- Emergency Shutdown:
- Equipped with an emergency stop button for immediate shutdown in emergency situations.
- System Protection:
-
- Automatically switches control modes upon sensor failure to ensure uninterrupted system operation.
- Offers local/remote control priority selection to adapt to different operational scenarios.

-
PLC controller is an important component of industrial automation systems, and if a fault occurs, it may affect the entire
production process. Here are some common steps for repairing PLC controllers:
Confirm the fault phenomenon: When the PLC controller malfunctions, the first thing to confirm is what the fault
phenomenon is, such as the equipment cannot start normally, the equipment cannot operate normally after starting, etc.
Troubleshooting software issues: If the PLC controller experiences software malfunctions, it is necessary to
check whether the program is correct and whether the equipment parameters are set correctly.
Troubleshooting hardware faults: If the PLC controller experiences hardware faults, it is necessary to check whether
the power supply is normal, whether the I/O module is damaged, and whether there are loose connection wires inside the PLC.
Replace damaged components: If a component in the PLC controller is damaged, it needs to be replaced, such as
replacing damaged power supplies, I/O modules, etc.
Restart the PLC controller: After completing the repair, it is necessary to restart the PLC controller and conduct necessary tests to
ensure that the equipment is functioning properly.
It should be noted that PLC controller maintenance requires certain professional knowledge and skills. If unsure how to repair,
please seek the help of professionals. In addition, relevant safety regulations must be strictly followed during maintenance to ensure the safety of personnel and equipment.
III. Technical Specifications
- Power Supply: 18-32 VDC, supporting 24VDC input.
- Display: Two-line x 24-character LED display for clear indication of operating status and parameters.
- Enclosure: NEMA 4X or IEC 60529 IP56 rated for protection against harsh industrial environments.
- Inputs/Outputs:
- Inputs: 6 programmable current inputs, 16 discrete contact inputs.
- Outputs: 2 actuator outputs, 8 relay outputs, 6 programmable current outputs.
- Communication Interfaces: 9907-175 Supports RS-232, RS-422, and RS-485 hardware interfaces for easy integration with host computers or other devices.
- Software: Equipped with OpView™ and 505View software for parameter configuration, monitoring, and fault diagnosis.
- Operating Temperature: -20 to +60°C (some models support -4 to +140°F).
- Storage Temperature: -40 to +85°C (some models support -40 to +185°F).
- 9907-175 Weight: Approximately 9.11 pounds (4.13 kilograms).
IV. Application Scenarios
- Steam Turbine Control: 9907-175Suitable for steam turbines of various sizes, including industrial steam turbines, small grid turbo-generators, and turboexpanders.
- Single Extraction and Admission Applications: Designed for operating steam turbines in single extraction and/or admission applications.
- On-Site Programming: Allows on-site operators to program and adjust parameters through an integrated operator control panel, adapting to different operating conditions.
V. Product Advantages
- High Reliability:
- Microprocessor-based design ensures precise control and stability.
- Triple independent overspeed protection logic provides multiple layers of safety.
- Flexibility:
- Supports various actuator and sensor configurations to accommodate different turbine models.
- Offers a rich set of input/output interfaces for easy system expansion and integration.
- Ease of Use:
- Two-line x 24-character LED display provides an intuitive operating interface.
- A 30-key multifunctional keyboard simplifies parameter configuration and operation.
- Compatibility:
- Supports multiple communication protocols for easy integration with DCS, PLC, and other systems.
- Provides OpView™ and 505View software for remote monitoring and fault diagnosis.
Woodward ship parts module debugger controller actuator generator set
8440-1947 Woodward turbine controller,
5501-376 Woodward speed control module,
SPM-D11 8440-1703 Woodward Ship Spare Parts,
5417-039 WOODWARD Debugger unit,
8272-582 Woodward turbine controller,
8915-094 WOODWARD Debugger unit,
5441-889 Woodward Ship Spare Parts,
5461-652 WOODWARD Debugger unit,
3462-757 Woodward Ship Spare Parts,
8915-877 Woodward overspeed protector,
ASML Wet Imaging Secondary 4022.640.67051
ASML LENS Z MANIP SENSOR 2 PREAMP
22375 PHILIPS PCB PROCESSOR CARDS ASML PAS 50002500 712271410003
1PCS ASML 4022.437.1856 MC2 AB41 PCB (3-month warrantySHIP FedEx)
POWER-ONE HPM5G2A1C4KB ASML 680-0146-089 D.C. POWER SUPPLY
SVG 99-46450-01 9200SE SVG ASML 90 track Z-robot, 23074-01-D, 112653
ASML 4022.455.09864 Green Laser Head with Controller Mfd: May 2016 Working
HEIDENHAIN RON 886 36000 54S09-CM V9 ASML 4022.636.86111 SEM-I-769=9G21
ASML 8549510001 ADVANCED MICRASCAN III RETICLE, RETICLE APPLICATIONS SEM
ASML PROCESSOR BLADE CONTROL PCB BOARD PAS 50002500 4022.428.1081
ASML 859-9628-002 AFLV RETICLE
ASML SERV.436.60994 POWER AMP CONTROLLER BOARD
Asml 4022.471.6181 Blu Onda Sistemi DBV44 W2 Installati
ASML SERV.502.29124 BSM MIRROR BXP
ASML Level Sensor Demodulator PPCA Board
SVG 99-46450-01 9200SE SVG ASML 90 track Z-robot, 23074-01-D, 110447
ASML SERV.502.29656 WH XT Load wrist mk4 assy. 4022.470.88552 4022.637.16724
ASML HEIDENHAIN 4022.640.59951
Philips PC171110 Processor PCB Card ASML 9406.217.1110 PAS 50002500
ASML IMAGE SENSOR 3652513 PN 4022.454.08271 IS DETECTOR CALIBRATION PLATE
ASML 4022.484.22273 Double HOVBEL Assy MK2 WS TYPE 1+2





Reviews
There are no reviews yet.