57C331

About the 57C331

The 57C331 is a Rack Assembly created by Reliance Electric. this assembly may have also been mass-produced by Asea Brown Boveri and Baldor Reliance. This rack is no longer supported by the manufacturers. AT AX Control we do try to keep this part in stock as a reconditioned or new surplus part. Please check out our website for the availability of the 57C331.

The 57C331 is a Multibus Card Rack used on the AutoMax control systems. This model comes with 16-slots and is panel mounted. This rack comes with a power supply and high-capacity cooling fans. The power supply and fans for this model are mounted under the assembly.  It is rated at 100/120 VAC, 8/7 amps, and 50/60 Hz. It has a maximum source of 50k VA. This rack comes with an ac line filter, a cable management tray, and custom card guides. This rack has spots for two sets of bus lines that can be mounted to the backplane.

The main purpose of the 57C331 is to provide a secure place to mechanically mount and store AutoMax modules. Because of how the signal lines are run on the multibus backplane, some of the modules attached to the rack have limitations on where they can be mounted. The power supply module can only be put on the left side of the rack. The Common memory module has to be put in slot 0 when more than one processor is used. If only one processor is used, then it can go into any even slot. The processor modules can only be put into slots 0-4.