Dc Power Supply Unit Wiring - Omron SYSMAC CQM1-ID212 Operation Manual

Wiring and Connections
WARNING
!
Caution
!

2-5-2 DC Power Supply Unit Wiring

! Caution
Terminal Block
26
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GR ( ):
Protective earth terminal. Connect to a separate ground wire of at least 2 mm
ground the terminal at a resistance of less than 100 Ω to prevent electric shock.
Avoid sharing the grounding wire with other equipment or attaching to the beam
of a building, otherwise it may cause an adverse effect.
Correct
CQM1
The following diagram shows the proper connection to a DC power supply. Refer
to 2-2-3 Selecting a Power Supply Unit for details on Power Supply Unit capacity.
Remove the seal from the top of the Power Supply Unit only after wiring is com-
pleted. This seal must be removed before operating the Unit to prevent over-
heating.
Use power lines of 2 mm min.
Twist
Be sure that the DC power supply voltage remains within the allowed fluctuation
range of 20 to 28 VDC.
The following diagram shows the terminal blocks for the DC Power Supply Unit.
The wire used should be at least 2 mm
the CQM1 PC as possible.
Note To satisfy the EC directives (low-voltage directive), provide reinforced insulation
or double insulation for the power supply.
Other
equipment
Breaker
CQM1-PD026
Provide a 24-VDC
DC
power supply.
input
Noise filter neutral terminal
Protective earth terminal
NC
NC
2
. Provide the grounding point as close to
Section 2-5
Incorrect
Other
CQM1
equipment
DC power supply
2
to