DS3820PIMB1A1B

About the DS3820PIMB1A1B

The DS3820PIMB1A1B a human-machine interface panel--or HMI--and PCB combination created by GE for the Mark IV gas/steam turbine management system.  The MKIV is built around integrated microcomputers designed to monitor the turbine system continuously and protect it from issues like over speed, fire, vibration, and loss of flame.  The MKIV can also automate standard processes like speed control, start up, temperature control, and shut down.

The DS3820PIMB1A1B is a modification built around two different printed circuit boards, including the DS3800NPSM.  The DS3820PIMB1A1B modification includes the addition of an HMI that fits around a display. This panel gives technicians a physical location to interact with and control the turbine system.  The panel has a cutout for a display and ten sections. These sections are labeled “DISPLAY MODE,” “DISPLAY KEYPAD,” “ALARM,” “PRINTER,” “EXECUTE,” “DISPLAY CURSOR,” “DISPLAY FUNCTIONS,” “EMERGENCY STOP,” “OPERATION,”  and “AUXILIARY DISPLAY.”

Two different printed circuit boards contribute to the control of the HMI.  Both are mounted on the back of the panel, one on top of the other. The board closest to the HMI is mounted with its components facing inward.  This PCB connects to the HMI via a ribbon cable connector. The other PCB, which is labeled DS3800NPSM, connects to the lower board via two six pin headers and six wires.  

The DS3800NPSM has been built with two integrated circuits.  It has three high-current inductors, one fuse, and four transistors.  It also has one toggle switch, one jumper, two LEDs, and two 6-pin connectors for communicating with other boards.

All technical support for the DS3820PIMB1A1B was supplied by GE.