This electrical and mechanical control schematic shows the wiring configuration for a three-wire analog input device connected to a direct digital control panel. Power is supplied via a 120 VAC source routed through a transformer and a fuse with disconnect. The circuit connects to the DDC panel terminals providing a 24 VAC power supply and an analog input signal.
AI TRANSFORMER 120 VAC POWER FUSE WITH DISCONNECT THREE WIRE DEVICE ~ ~ 24 VAC DDC PANEL TERMINALS SIGNAL
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