About the 51377-31
51377-31 Reliance Electric Motherboard 9-slot Rack for MaxPak Plus
The 51377-31 functions as a Reliance Electric Motherboard, typically used within a MaxPak Plus spindle drive. The MaxPak Plus is a variable speed DC drive with most of the electronic circuitry separated into plug-in circuit boards. The 51377-31 is used to interconnect plug-in cards and other parts of the drive system. Please follow labeling on the board for the proper installation of boards. This circuit board is no longer being manufactured. Reliance has since been bought out by Rockwell.
The 51377-31 is designed with multiple female plug-in connectors and lines of male pins. Each of the connectors is designed to connect to a particular circuit board. These include, from left to right, boards SSCC (0-51874-2,) CVTH (0-51831-7,) CLDR (0-51865-14,) ACCA (0-52837,) CCC, USRA (0-52838,) TSSA (0-52839,) and STPB (0-52809-1.) Each of the pins in each line is individually labeled with its use.
The 51377-31 circuit board is drilled for mounting hardware in each corner. It is also drilled within the body of the board at the end of each female connector and in four other places. These drill holes are larger than typical mounting holes. The board is marked with the manufacturer’s logo and with the board id.
For more information, please consult publications from Reliance Electric/Baldor-Reliance regarding this board component or the MaxPak Plus drive. Reliance was responsible for all original technical support for this product, including manuals, data sheets, and user guides. These publications will provide detailed instructions on installation, troubleshooting, and maintenance.
