About the DS3800HIOA1C1D
The GE Input Isolator Board DS3800HIOA1C1D features a hole in each corner for installing the board with screws. The GE Input Isolator Board DS3800HIOA1C1D also is populated with a microprocessor and multiple erasable programmable read-only (EPROM) modules. The board has 1 34-pin connector that is accessible from the edge of the board. It also is populated with test points.
If you find that the GE Input Isolator Board DS3800HIOA1C1D is not functioning as expected, there are several troubleshooting steps you can take. You must remove all power from the board before you start. To do that, you must consult with an installer who is familiar with the installation of the drive. The installer will have knowledge of the various sources of power connected to the drive. You must understand that the drive requires several sources of power and that they must all be disconnected. If a dc power source is connected, you can remove the fuses from the power inverter to disconnect power. If ac power is connected to the drive, you can remove power by pulling a circuit breaker.
Once power is removed, it is best practice to use a full function testing device to check for the presence of power in the drive. Inspect the 4 fuses on the board and if any of them are blown, replace them. If you replace a fuse, restart the drive and check to see if full operation is restored to the board. Make sure the fuses you install in the board have the identical rating as the fuses you remove.