DS3820PMMB1A1B

About the DS3820PMMB1A1B

The DS3820PMMB1A1B has been modified to act as a Field Exciter Motor Module.  This module is manufactured by GE for the Mark IV gas/steam turbine control series.  The Mark IV is built on integrated microprocessors that monitor the turbine system continuously around the clock and protect it from such things as loss of flame, vibration, and high pressure.  

The DS3820PMMB1A1B is built upon multiple circuit boards, including the DS3800DEPB, the DS3810HSIC and the DS3810HSSD.  Many more boards are used within the DS3820PMMB1A1B. All boards are encompassed together in a metal housing. Some of these boards connect to the housing using screws.  Others are mated to other circuit boards using nylon spacer pins. All boards can be accessed by technicians by way of cutouts left in the housing for this purpose. When wires travel from one PCB to another within the housing, they have been protected by sleeves or clipped together by nylon ties.   A heat sink has been added to the housing to manage collective heat coming off the many components.

Because there are so many boards used in the building of the DS3820PMMB1A1B, all components will not be listed here.  However, the Motor module makes use of many rotary and trim potentiometers, as well as quick-connect screw mounts. Several boards have jumper switches.  Most boards have some kind of header connector and/or PCB mating connector for the use of ribbon connector or wiring. A large transformer occupies the lower part of the metal housing.  Next to this is a multiport terminal block. There are several other terminal blocks located in the frame. Capacitors and resistors vary by board.

The DS3820PMMB1A1B is a non-reversing motor module.  All technical support for this part was the responsibility of the original equipment manufacturer.  This includes end-user publications such as manuals and data sheets.