Woodward 9907-205 controller

                              Woodward 9907-205 controller

Woodward Unit 9907-205 from 505 Digital microprocessor-based Controllers for Steam Turbines with Single or Split-Range Actuators.

Product Description

The device listed here is the 9907-205 model, a part of the 505 and 505E Microprocessor-based governor control units. These control modules were designed specifically to operate steam turbines, as well as turbogenerators and turboexpander modules. The 505/505E series was developed, produced, and manufactured originally by Woodward Inc. Woodward is the oldest industrial manufacturer in America, founded in 1870, and still, today remains one of the leading industrial companies in the market. These 505 and 505E models are available from us here at AX Control Inc. as a part of our inventory of used, yet reconditioned and repaired digital hardware.

The 9907-205 unit is designed to control the steam turbine by operating a single extraction and/or the admission for the turbine. It utilizes the turbine’s split-stage actuators, either one or both of them, to drive the inlet valves for steam.

This unit, like any of the 505 governor modules, is able to be configured in the field by the on-site operators. The menu-driven software is controlled and altered by the operator control panel integrated onto the front-facing side of the unit. The panel has a display of two lines of text, 24 characters per line.

The 9907-205 is outfitted with a series of discrete and analog inputs: 16 contact inputs (4 of them dedicated, 12 of them programmable), and then 6 programmable current inputs, at 4 to 20 mA. The standard features included into the 9907-205’s capabilities are the critical speed avoidance, valve limiters, the auto start sequence, and the first-out indicator for shutdowns.

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1. Digital motherboard: used for core control, calculation, storage, servo control, etc. The new motherboard integrates PLC control system functions.

2. PLC board: used for peripheral action control. The PLC board of the new system is integrated with the CNC main board.

3. I/O board: The early I/O board was used for switching signals between the NC system and the external. The I/O board mainly integrates display interface, keyboard interface, handwheel interface, operation panel interface and RS232 interface.

4. MMC board: man-machine interface board. Computerized board with CRT, standard keyboard, floppy drive, mouse, memory card and serial and parallel interfaces.

5. CRT interface board: used for display interface. In the new system, the CRT interface is integrated with the I/O board.

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The information contained in this document is subject to change without notice.The reader should, in all cases, consult ICS Triplex Technology Ltd. to determinewhether any such changes have been made. From time to time, amendments tothis document will be made as necessary and will be distributed by ICS TriplexT echnology Ltd