Knowledge Base

SX10505: Power supply requirements

The board will run off 12VDC to 24VDC. Maximum current draw (TTL interface, RS485 termination link open) is 30mA. Using RS485 and 75 Ohms of termination, the maximum current draw is 90mA. The voltage is allowed to go to a maximum of 32V.

Connect power to the 3-pin connector depicted above. The positive terminal is in the middle. There are 2 ground pins simply because we used a 3-pin connector to make it unique.

You can use the same power supply as for the controller and other boards in your system, or a separate one. However, the ground (0V) terminals of all power supplies and boards must all be connected together or smoke will come out.