Receiving power supplied from sources other than the controller
Controller
Scale
Power supply (5 V)
Power supply ground
Power supply (5 V)
Power supply
ground
Power supply
FG
FG
ground
Fig. 6-5
When receiving power from sources other than the controller, the controller's power supply ground and the
power supply ground of the power supply unit have the same potential.
The system will not be compliant with EN61000-6-2 if the power supply line exceeds 10 m.
Devise and implement measures to prevent surges.
6-4
BL57-RE
(E)