I would like to know how the 'C' wire is connected in the TIDA-010085 reference design. Is the ISO_GND connected to the 'C' line in the HVAC system?
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I would like to know how the 'C' wire is connected in the TIDA-010085 reference design. Is the ISO_GND connected to the 'C' line in the HVAC system?
Hi Adnan,
For this design, the ISO-GND is not connected to the C wire, but is a floating ground (part of the isolation rail for the gate driver for each SSR). The C wire will come from the 120V->24VAC transformer and is a common connection to each SSR, and can be used for powering remaining portions of the SR board.
-Brian