505/505E Steam Turbine Digital Control

505

The 505 and 505E are microprocessorbased controls designed to operate steam turbines of all sizes. The 505 is designed to operate steam turbines using one or two (split-stage) actuators to drive inlet steam valves. The 505E is designed to operate single extraction and/or admission steam turbines. These digital controls are field programmable. They use menu-driven software to instruct site engineers on programming the control to a specific generator or mechanical drive application. The 505 or 505E can be configured to operate as a stand-alone unit or in conjunction with a plant’s Distributed Control System.

505 Enhanced

• Improved generator breaker load rejection response
• Improved tie breaker load rejection response
• Added compressor control decoupling
• Added start routine options (3rd Idle Setpt)
• Added generator loading/unloading options
• Added Dual-Redundant 505 control logic
  • Two 505s connected together
  • Master / Slave (hot backup) redundancy
• Added Front Panel Transfer Button

Designed to operate industrial steam turbines of all sizes and applications, this steam turbine controller includes specifically designed algorithms and logic to start, stop, control, and protect industrial steam turbines or turbo expanders, driving generators, compressors, pumps, or industrial fans. The 505 control’s unique PID structure makes it ideal for applications where it is required to control steam plant parameters like turbine speed, turbine load, and turbine inlet or exhaust header pressure, or tie-line power. For critical applications requiring increased reliability and redundancy, optionally two 505 Enhanced controls can be connected in a redundant configuration to increase overall system availability.