Standard I/O Unit Wiring - Omron C200HE-CPU42-E Instruction Manual

Wiring
Crimp Terminals

3-2-2 Standard I/O Unit Wiring

! Caution
Electric Wires
Crimp Terminals
70
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When using an Expansion I/O Rack, the Rack must also be grounded to the GR
terminal. The same ground can be used for all connections.
OK
Other
devices
Ground to 100 Ω or less.
If grounding results in operating errors, insulate the CPU Backplane and all
Expansion I/O Backplanes from the control panel. Refer to Using the Antinoise
Insulating Attachment on page 79 for details.
Make sure that the C200HW-PA204C is wired correctly. The C200HW-PA204C
terminals are wired differently from other Power Supply Units.
The terminals on the Power Supply Unit are M3.5, self-raising terminals with
screws. Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Tighten the terminal block screws to the torque of 0.8 N S m.
Use crimp terminals (M3.5) having the dimensions shown below.
7 mm max.
Check the I/O specifications for the I/O Units, and consider the following points.
• Do not apply a voltage that exceeds the input voltage for Input Units or the
maximum switching capacity for Output Units. Doing so may result in break-
down, damage or fire.
• When the power supply has positive and negative terminals, be sure to wire
them correctly.
Note To satisfy the EC Directives (Low-voltage Directives), provide reinforced insula-
tion or double insulation for the DC power source connected to the DC I/O Unit.
Use a separate power source for the DC I/O Unit from the external power supply
for the Contact Output Unit.
The following electric wires are recommended.
Terminal Block Connector
10-terminal
19-terminal
Note The allowable current capacity of electric wiring differs depending on factors
such as ambient temperature, insulation thickness, etc., so be sure to take these
factors into account when selecting electric wire.
The terminals on the Power Supply Unit are M3.5, self-raising terminals with
screws. Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Tighten the terminal block screws to the torque of 0.8 N S m.
Use crimp terminals (M3.5) having the dimensions shown below.
7 mm max.
OK
Other
devices
Ground to 100 Ω or less.
7 mm max.
Electric Wire Size
AWG 22 to 18 (0.32 to 0.82 mm
2
AWG 22 (0.32 mm )
7 mm max.
Section 3-2
Wrong
Other
devices
2
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