The 74101-482-63 (1336-BDB-SP24C) PCB Gate Driver Board by Allen-Bradley is a gate drive board for the Allen-Bradley 1336 Plus, Force, Impact, and Plus II drive series, with 575V AC and 300HP drive ratings, and with a Frame G frame size. The gate driver board is located under the drive’s main control board, and it, unlike every other board that is close to the main control board, is used to amplify the low-input current in the drive. The 74101-482-63 board has jumper connectors J2 through J13 that are used for connection to the main control board and to the other boards, and it also has a terminal base (TB4) used for 24V DC auxiliary input. Its alternate number is 1336-BDB-SP24C.

The Allen-Bradley 74101-482-63 can be installed by attaching the board to the drive’s main control mounting plate, and by fastening it in place with 8 standoff screws that are driven in a ¼ clockwise direction. Wires from the drive’s terminal base (TB7) are then attached to the board, and the jumper connectors J2 through J13 are then connected to their respective spots. The 74101-482-63 PCB Gate Driver Board, the main control board, and the mounting plate are then installed in the drive’s circuit board platform. When modules are replaced in the drive, the 74101-482-63 PCB Gate Driver Board should be tested for viability. The board is tested for open conditions at fuses 1 and 3, with the test meter set at resistance. The board is also tested by setting the test meter to the diodes, and the tested meter reading is compared with the standard reading. These boards that are designed to operate with AC drives with a range of 300 to 800 horsepower.