Allen Bradley 1336-BDB-SP45D

The 1336-BDB-SP45D is a PCB gate drive board for AC drives manufactured by Allen-Bradley. This PCB gate drive board is intended to be used only with 460 Volts AC rated AC drives with 400 Horsepower output ratings. That means that this board is only compatible with “D” frame-sized 1336 series AC drives. In some catalogs, this part will be denoted as the 74101-169-84. Spare part kits with the 1336-BDB-SP45A and 1336-BDB-SP45C order codes are older versions of this spare part kit and they can be replaced with the 1336-BDB-SP45D spare part.

The Allen-Bradley 1336-BDB-SP45D mainly has a role in amplifying the control signals on 1336 series AC drives. In these output power control applications, this electrical component tries to find the simplest way of driving the gate-switching transistors and to employ the gate drive output of the PWM controlled signal. On the input side of the PCB gate drive board, there is a low power signal which is then taken to a higher power level with this PCB for switching IGBTs. This gate drive board as one of the main components of 1336 series AC drives. This board can become dysfunctional when only one fuse is blown, so always check fuses F1 and F3 for an open condition before changing the 1336-BDB-SP45D board. If the users decide to disconnect and change this electronic part, they will find it located below the main control board on the 1336 series drive. Put on a wrist-type grounding strap as a precaution during the board’s replacement. After the shutdown of the device, wait for a few minutes until the drive’s capacitors are discharged.