I/O Unit Wiring - Omron CQM1 Operation Manual

Wiring and Connections

2-5-4 I/O Unit Wiring

! Caution
WARNING
!
In order to improve the electromagnetic compatibility (EMC), connect the LG (
or ) terminal to the screw on the end plate using the supplied DIN-track con-
necting cable.
DIN-track cable
(Supplied with
the CQM1 PC)
Note Definition of EMC:
The EMC refers to the capacity of equipment represented in terms of emission,
which indicates the degree to which electromagnetic waves produced by equip-
ment do not affect other communications equipment, and also in terms of immu-
nity, which indicates the degree of resistance against electromagnetic distur-
bance.
Note To satisfy the EC directives (low-voltage directives), provide reinforced insula-
tion or double insulation for the DC power supply used with the I/O Unit.
The following information must be considered when connecting electrical
devices to I/O Units.
Tighten the terminal screws to a torque of 0.5 to 0.6 N S m.
Do not apply voltages exceeding the input voltages to Input Units nor voltages
exceeding the switching capacity to Output Units. Doing so may result in
damage or destruction of the I/O Unit or result in fire.
Short-circuit bar
(Supplied with the CQM1 PC)
Grounding wire
2
(Use a wire of at least 2 mm
to ground at a resistance of
less than 100 Ω.)
Section 2-5
29