GE IS215UCVEH2A Boards & Turbine Control GE Industrial Systems

GE IS215UCVEH2A Boards & Turbine Control GE Industrial Systems

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Mark VI control systems are available in Simplex and Triple Redundant forms for small applications and large integrated systems with control ranging from a single module to many distributed modules. The name Triple Module Redundant (TMR) is derived from the basic architecture with three completely separate and independent Control Modules, power supplies, and IONets. Mark VI is the third generation of triple redundant control systems that were pioneered by GE in 1983. System throughput enables operation of up to nine, 21-slot VME racks of I/O cards at 40 ms including voting the data. Inputs are voted in software in a scheme called Software Implemented Fault Tolerance (SIFT). The VCMI card in each Control Module receives inputs from the Control Module back-plane and other modules via “its own” IONet.

In addition to general purpose I/O, the Mark VI has a large variety of cards that are designed for direct interface to unique sensors and actuators. This reduces or eliminates a substantial amount of interposing instrumentation in many applications. As a result, many potential single-point failures are eliminated in the most critical area for improved running reliability and reduced long-term maintenance. Direct interface to the sensors and actuators also enables the diagnostics to directly interrogate the devices on the equipment for maximum effectiveness. This data is used to analyze device and system performance.

An external synch check relay is connected in series with the internal K25P synch permissive relay and the K25 auto synch relay via the TTUR. Feedback of the actual breaker closing time is provided by a 52G/a contact from the generator breaker (not an auxiliary relay) to update the database. An internal K25A synch check relay is provided on the TTUR; however, the backup phase / slip calculation for this relay is performed in the Backup Protection Module or via an external backup synch check relay. Manual synchronizing is available from an operator station on the network or from a synchroscope.

The module supports different control modes, including proportional control and ON/OFF control. It allows for precise voltage regulation or simple on/off switching, adapting to specific operational requirements and providing flexibility in controlling connected devices.

The module features programmable control parameters, allowing for the customization of control actions based on specific requirements. It can be programmed to adjust control parameters such as gain, offset, or control response time, providing flexibility in achieving desired control performance.

The module incorporates advanced fault detection and protection features. It continuously monitors voltage signals and output states, detecting abnormalities or fault conditions. It can trigger appropriate protective actions, such as alarm activation or equipment shutdown, to prevent further damage and ensure operational safety.