Power Distribution Board (Relay Pca); Figure 9-3. Power Distribution Board (Relay Pca) - Teledyne T750 User Manual

P D B (R PCA)
OWER ISTRIBUTION OARD ELAY
The power distribution board (Relay PCA), Figure 9-3, is one of the central switching and
power distribution units of the calibrator (see Figure 9-4 for its location). It contains power
relays, valve drivers and status LEDs for all heated zones and valves, as well as
thermocouple amplifiers, power distribution connectors and the two switching power
supplies of the calibrator. This board communicates with the motherboard over the I 2 C bus.
Its status indicators and components can be used for troubleshooting power problems and
valve or heater functionality.

Figure 9-3. Power Distribution Board (Relay PCA)

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