18
Power Supply Wiring
Make sure to connect to the controller system a stable power that has voltage fluctuations
within 10% deviation from the rated input voltage. The frame ground terminal must be
grounded with Class 3 (100
Ω
or less of ground resistance) or Class D grounding to prevent
voltage mixing between the frame ground and the power input terminals.
Ground the frame ground
terminal with a dedicated Class 3
(100
Ω
or less of ground
resistance) or Class D grounding.
Power
source
isolation
transformer
Noise
filter
* If the secondary side of the isolation transformer and the noise filter is too far from the
controller system and noise becomes excessive, it does not have any significant effect.
