0-52806

About the 0-52806

0-52806 Overspeed Tach Loss PC Board TLOA

The 0-52806 is a Reliance Electric board component that is typically used within the company’s drive systems. In some cases, this product originates from ABB/Asea Brown Boveri or from Baldor Reliance.  The 52806 part id remains the same in all these cases.

The 0-52806 functions as an Overspeed Tach Loss Card.  This board is designed to monitor a speed-regulated system’s tachometer signal and compare it with the system’s speed reference.  The board’s front panel is designed with two LED indicators, an opening to a component, and a terminal strip built with twelve screw connections.  The LEDs are labeled ‘tach loss’ and ‘over speed.’ The opening is labeled ‘tach calibration’ and allows access to a potentiometer located on the surface of the circuit board. The terminal strip includes its own smaller cover that connects to the strip using two screws.    Surface wiring is used to connect the terminal strip connections to the circuit board’s surface; these connections run from the back of the faceplate to the board.

The board portion of the 0-52806 is populated by a transformer.  This is marked TR-12174. It has one relay, six transistors, six integrated circuits, along with disk capacitors, diodes, metal film resistors, and other capacitors made from polyester vinyl and other materials.  The board has several vertical pin connectors that attach to surface wiring. Surface wires are used elsewhere on the board. A grid pattern is printed on the board’s surface.

Installation and maintenance details can be found through publications originally provided by Reliance, such as product data sheets, series user guides, and manuals.