THOMSON TSC 80, Service Manual, Page: 10 / 41

TSC 80 TRANSFER SWITCH CONTROLLER
PM063 Rev 7 09/02/27 Thomson Technology
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2. DESCRIPTION
The TSC 80 controller utilizes microprocessor-based design technology, which provides high
accuracy for all voltage sensing and timing functions. The TSC 80 is factory configured to control all
the operational functions and display features of the automatic transfer switch.
The TSC 80 controller consists of two parts; a Lexan faceplate, which is mounted externally on the
transfer switch door, and a printed circuit board (PCB), which is mounted inside the transfer switch on
the enclosure door.
2.1. LEXAN FACEPLATES
The TSC 80 Controller Lexan faceplate is shown as in FIGURE 1. The Lexan pushbuttons and
LED lights are connected to the main PCB via plug-in ribbon cable. The main features of the
Lexan faceplate are described as follows with reference to FIGURE 1.
Utility Supply Available LED light
Load on Utility supply LED light
Load on Generator supply LED light
Generator Supply Available LED light
ATS Load Bus Energized LED light
Utility Power Fail Test Mode Pushbutton & LED light
Auto Generator Exercise Mode Pushbutton & LED light