2. Safety instructions
Power supply and grounding requirements. Connection to controller
General requirements for a controller board, systems in box ( single and double axes) are listed below.
IMPORTANT. Either the power supply unit should be plugged to grounded 220V AC socket (a three-wire connection
scheme). Make sure that the minus electrode of your power supply unit is grounded. If the power supply unit with
minus electrode disconnected from the grounding circuit is used, ground the controller board via special grounding
terminal (look at the picture below). Non-compliance with these rules may lead to the decrease in controller stability
and noise resistance.
Top view of the controller board. A grounding terminal marked with the red square
Typical connection diagram for a controller (board, systems in box):
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