3: I
NSTALLATION
AND
W
IRING
3-12 S
MART
AXIS P
RO
/L
ITE
U
SER
'
S
M
ANUAL
FT9Y-B1378
Power Supply Wiring
When connecting the power supply, be sure to take care of the following:
• Use a stranded wire of UL1015 AWG22 or UL1007 AWG18 for power supply wiring. Make the power supply wiring as short as possible.
• Run the power supply wiring as far away as possible from motor lines.
• is the protective ground terminal. To prevent electric shocks, ground the terminal with D-type ground (type 3: ground resistance of 100
maximum).
• is the functional ground terminal. To prevent malfunction or breakdown of the SmartAXIS due to noise, ground the terminal with D-type
ground (class 3: ground resistance of 100 maximum).
• When connecting a stranded wire or multiple wires to a terminal block, use a ferrule.
Grounding
When grounding the power supply, be sure to take care of the following:
• Do not use the common ground for the SmartAXIS and motor equipment. The common ground can be used only when the length of
grounding wires for those devices are the same.
• Use a ground wire of UL1007 AWG16.
• Use a thick wire for grounding the SmartAXIS and make the grounding wire as short as possible to make sure that noises from external
devices can be conducted to the ground effectively.
• As shown below, external devices generating noise must be separated from the SmartAXIS and grounded with the D-type ground (class 3).
• Make the length of the grounding wire for the SmartAXIS as short as possible.
• Use the SmartAXIS within the specifications of ratings and environmental conditions. Failure to do so may cause the
SmartAXIS to break down or reduce product life.
• Be sure to connect the grounding wire to a proper ground, otherwise electrical shocks may be caused.
• Do not touch live terminals, otherwise electrical shocks may be caused.
• When connecting the power supply, tighten the terminal screws with torque of 0.5N·m (5kgf·cm).
Caution
SmartAXIS
Inverter or
similar external
device
D-type ground
(class 3)
SmartAXIS
D-type ground
(class 3)
SmartAXIS
A
B
Length A = B
Inverter or
similar external
device
Inverter or
similar external
device