Omron G9SP-N20S - Page 19

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Turn OFF the power supply before performing any of the following.
• Connecting or disconnecting Expansion I/O Units, Option Boards, or any other Units
• Assembling the G9SP-series Controller
• Connecting cables or wiring
• Connecting or removing terminal blocks
● Installation and Wiring
• Use the following to wire external I/O devices to the G9SP-series Controller.
*1: When wiring two wires to one terminal. Use two wires of the same type and thickness.
• M3 self-rising screws are used for all screw terminals.
• Tighten the terminal block screws to a torque of 0.5 N·m (4.4 lb·in).
• Disconnect the G9SP-series Controller from the power supply before starting wiring. Devices con-
nected to the G9SP-series Controller may operate unexpectedly.
• Properly apply the specified voltage to the G9SP-series Controller inputs. Applying an inappropriate
DC voltage or any AC voltage will cause the G9SP-series Controller to fail.
• Be sure to separate the communications cables and I/O cables from high-voltage/high-current lines.
• Be cautious not to get your fingers caught when attaching connectors to the plugs on the G9SP-series
Controller.
• Incorrect wiring may lead to loss of safety functions. Wire conductors correctly and verify the operation
of the G9SP-series Controller before using the system in which the G9SP-series Controller is incorpo-
rated.
• Lock the connectors on Option Units or Expansion I/O Units before using the Units.
• After wiring is completed, be sure to remove the label for wire clip entry prevention from the G9SP-
series Controller to enable heat to escape for proper cooling.
• Do not ground the 24-V side of the power supply to the G9SP-series Controller. If you do so, an
unwanted current flow shown in the following diagram may occur when you connect a computer or
other peripheral device.
• Connect no more than the specified number of Expansion I/O Units.
Solid wire
0.32 to 0.82 mm
2
AWG22 to AWG18
0.32 to 0.5 mm
2
AWG22 to AWG20*1
Stranded wire
0.5 to 1.3 mm
2
AWG20 to AWG16
0.5 to 0.82 mm
2
AWG20 to AWG18*1
Power supply circuit
24 V
0 V
0 V
0 V
Peripheral device
USB cable
FG
G9SP
GND