Woodward 9904-173 505 Turbine Control | 100% Original
1.9904-173 Product Overview
The Woodward 9904-173 belongs to the 505/505E series digital turbine controllers. It is a microprocessor-based control module designed for single-valve steam turbines,
including single extraction/admission systems or split-range actuator configurations.
The controller features a front panel Operator Control Panel (OCP) with a two-line, 24-character display and multi-function keypad, allowing easy on-site configuration and monitoring.
contacts： Mike
+86 18350224834 （WeChat/WhatsApp）
Email：Mike18350224834@gmail.com
2. 9904-173 Technical Specifications and Parameters
| Parameter | Details |
|---|---|
| Power Supply | +24 VDC, approx. 1 A |
| I/O Outputs | Discrete Outputs: 8 Analog Outputs: 6 Actuator Outputs: 2 |
| Display / HMI | Two-line, 24-character LCD, with multi-function keypad |
| Dimensions | Approx. 14 × 11 × 4 in (35.6 × 27.9 × 10.2 cm) |
| Weight | Approx. 9.11 lbs (4.13 kg) |
| Operating Temperature | –4 to +140 °F (–20 to +60 °C) |
| Storage Temperature | –40 to +185 °F (–40 to +85 °C) |
| Humidity Standard | 95% RH at 20-55 °C for 48 hours without damage |
| Protection Class | Typically meets industrial dust and water protection standards |
| Communication Protocol | Supports Modbus, RS-232 / RS-422 serial interfaces |
3. Brand History
Woodward, Inc., founded in 1870 and headquartered in Fort Collins, Colorado, USA, is a global leader in energy control systems. The company has a long history of innovation in turbine control, engine management,
and power generation systems.
Woodward products are widely recognized for their reliability and precision in demanding industrial and power generation applications.
4. Applications in Industrial Automation
The 9904-173 plays a critical role in industrial automation and power generation environments:
- Steam Turbine Control: Manages startup, speed regulation, and extraction/admission control of steam turbines.
- Power Generation Systems: Used in power plants to regulate turbine-driven generators for stable frequency and load management.
- Compressor and Pump Drive Control: Ensures precise speed control for turbine-driven compressors and pumps.
- Process Industry Applications: Applied in chemical plants, refineries, and other industries requiring precise turbine operation.
- Safety and Protection Functions: Includes overspeed protection, critical speed avoidance, actuator travel limits, and event logging for operational safety.
External wiring diagram of servo drive _ servo drive faults and maintenance
How to wire servo drives
There are two connections that can be connected.
One is the power line, which provides three-phase AC power to the motor through the driver, usually with three or four wires;
The second is the encoder signal line, where the position signal is fed back to the driver for calculation by the encoder.
Generally speaking:
Nowadays, AC servos are commonly used in servo systems, so their power cords are not much different from ordinary three-phase asynchronous motors.
Connect the power cord from the servo drive power module to the motor power port
The encoder is connected from the servo encoder port to the motor encoder port. Depending on the encoder signal,
some may require the installation of intermediate conversion devices.
Click to learn more about Woodward”s products
ASML 854-9502-003 RETICLE, MSIII+, 4X
Asml 4022.470.5367 WH Shb Svg
ASML GREEN LASER CONTROLLER
Ushio Inc.PE-250U3SV
CYMER 05-05186 ASML 854-2343-002 SHARED MEMORY 256K PC (VL 7709B)
ASML RETICLE GRIPPER 4022 431 0150 FOR PAS 25005000
ASML 4022.470.6295 RH Handling Box SHB-RH Nikon NES1 Mini Stepper Working
SVG ASML 121-142F 99-45959 Controller Low-Spin Motor Developer
ASML 4022.472.42584 Class 3B ( AIGaInP ) 635nm 20mW Solid state Laser RED635
ASML 4022.636.45521 RSMR4 for Semiconductor
Philips 7122 714 1800 Power Distribution PCB Card ASML 4022.430.0336 PAS
1PCS New Open box 5322 695 15945 ASML 4022 192 72180 via DHL or FedEx
ASML 4022.634.20691 PAAC 45020 POWER SUPPLY,
Applied Materials ASML ROBOT PART
1PCS ASML RH-PU-Mk3 PN 4022.631.24391 90days warranty via DHL or FedEx
ENERGY SENSOR 2
Asml Svg 4022.481.2556
ASML 4022.428.1804 Prealignment Unit PCB Card PAS 50002500 Wafer Stepper
ASML 859-0943-005 GAUGE,CAP,PRB,
IH Supply Set ASML 4022 642 24724 CT IH MANSUP Y+ NXT I5
Asml 4022.480.6766 Ottico Articolo Svg GLP 7123 3-0078
ASML 4022.428.11160 Velocity Control PCB Card 4022.428.1116 PAS 50002500
There are no reviews yet.