IS200JPDLG1A|Mark VI printed circuit board
The IS200JPDLG1A is a GE component created for the Mark VI system. The Mark VI was one of GE’s last management systems for gas and steam turbines, released as part of the Speedtronic family. This series of turbine management systems has been researched, developed and successfully released by GE for three decades. The Mark VI included some of the best parts of these early systems (such as triple redundancy control) and at the time of its release had technological advances such as Ethernet communication capabilities and a Windows platform PC used as an HMI (operator interface).
The IS200JPDLG1A is a switchboard. JPDL boards are sometimes referred to as “Skinny” boards because of their size. The IS200JPDLG1A provides DC distribution between the control power supply (usually a JPDS or JPDP board) and multiple I/O packages. The IS200JPDLG1A boards can be Daisy chained together. The board is used to provide organized control power separation by providing isolated distribution circuits for the TMR system.
The IS200JPDLG1A has six varistors mounted on the board, alternating with six I/O connectors. These connectors are Mate-n-Lock connectors, labeled JR1/JR2, JS1/JS2, and JT1/JT2. At both ends of the board, there are two larger 5-pin Mate-N-Lock connectors. The JL1 connector is the input and JL2 is the output. The input power supply is usually 28 VDC.