About the IC3600KVSA1D
The IC3600KVSA1D is a GE FANUC component designed for the Mark I/Mark II Speedtronic series from GE. Created for gas/steam turbine management, the MKI and MKII use a large amount of redundancy within their designs, a feature that occurred due to the focus on minimizing machine shutdowns caused by control system failures. If one redundant system fails it will annunciate an alarm, but it will not shut down the system. In some cases, it was not practical to design a system of full redundancy. In those cases, the designers used one system (like temperature control) to back up another (for example, speed control.) In that way, if the speed control system fails, the temperature control system will take over running the turbine.
The IC3600KVSA1D functions as a Zero Speed Relay card. It has one potentiometer, a single integrated circuit, and five transistors. Transistors are of two different designs. The board is built with carbon composite resistors in most places, but also uses resistors of other material. Capacitors can be made of aluminum electrolytic material or ceramic material. All components on the board are marked.
The IC3600KVSA1D includes a reed relay. This component is placed in the center of the board, parallel to the short edges of the board. It is marked with the codes 68A997168A02 and NP68A997229 P2. The top surface includes a relay diagram and the GE logo. The relay is rated 50 VA and 28 VDC. Green, yellow, red and black wires attached to the relay’s end connect to the line of fifty-one pins on one edge of the board.
