Description

The GE DS3800HDDD1D1E is a printed circuit board (PCB) manufactured as part of their Mark IV Speedtronic series. The Speedtronic series is a steam and gas turbine control system that has minimal downtime due to electronics failure.

The DS3800HDDD1D1E has been designed as a diagnostic display board. It has two parts: the operator panel and the connected printed circuit board.

The operator panel for the DS3800HDDD1D1E is connected to the PCB via four flathead screws and spacer channels. This has been divided by vertical lines into three sections. There are four LEDs in the first section.The first three of these are amber and the last is red. Below the LEDs is a switch. These are labeled "drive ok," "data link active," "ready to run," "fault," and "reset." The second section has three LED strips (red,) labeled as below. Each numbered label corresponds to two LEDs.

First strip: "Motor Faults"

1 Overload

2 Overcurrent

3 Overspeed

4 Overvolts

5 Tach loss

6 Field loss

7 Field overcurrent

8 External fault

9 PMM fault

10 Software trip

Second strip: "Converter Faults"

11 Overload

12 Overcurrent

13 AC Fault

14 DC Fault

15 SCR/Fuse

Third strip: "Alarms"

16 Motor Overload

17 Connector Overload

18 PMM Overload

19 Memory Overload

20 Ground Fault

In the third section of the panel there are three more LED strips in numbered pairs of two:

First strip: "Drive Status"

21 Control ready

22 Field on

23 M Closed

24 On Request

25 On

Second strip "Reference Selection"

26 Run Ref

27 Current Ref

28 Forward Ref

29 Reverse Ref

30 Speed 1 Ref

31 Speed 2 Ref

32 Speed 3 Ref

33 Jog Fwd

34 Jog Rev

35 Creep/slow

Third strip "Status"

36 Zero Speed

37 Reset Request

38 Tuneup mode

39 Emergency stop

40 Alternate display

The DS3800HDDD1D1E PCB lines up with the corresponding operator panel. It is factory-drilled to accept the mounting screws and spacers mentioned above. The LEDs that show through the operator panel are mounted to the board to line up with the display accordingly.

The DS3800HDDD1D1E is marked A through J from corner to corner on its bottom edge. A multipin connector is located next to two thumbwheel potentiometers (labeled M58 and L58) along its left side.

The DS3800HDDD1D1E has multiple integrated circuits. There is a line of ceramic covered metal film resistors at the top and bottom of the board, as well as other resistors spaced throughout the board.

Technical support for Mark IV components including the DS3800HDDD1D1E was provided originally by GE. Please refer to their manuals and/or data sheets for installation guidelines.