Omron CPM2C-S100C Operation Manual page 85

Wiring and Connections
!WARNING
Power Supply Wiring
!WARNING
Connect the ground terminal of the Power Supply Unit to a ground of 100 Ω or
less when installing the Unit. Not connecting to a ground of 100 Ω or less may
result in electric shock.
• To prevent voltage drops caused by startup currents and inrush currents
from other devices, wire the power supply circuits of the CPM2C-S sepa-
rately from power line circuits.
• When using several CPM2C-S PCs together, it is recommended that cir-
cuits are wired separately in order to prevent circuit-breaker malfunctions
and voltage drops due to inrush current.
• Twist power supply lines to prevent noise from the power supply lines.
Noise can further be prevented by wiring via a 1:1 isolation transformer.
• Use wires at least 1.25 mm
to keep the current within the allowable level.
Tighten the screws on the terminal block of the AC Power Supply Unit to a
torque of 0.74 to 0.9 N·m. Loose screws may result in burning or malfunction.
The 24-VDC service power supply terminals on the terminal block can be
used for input power supply.
Ground of 100 Ω or less
2
thick in order to allow for voltage drops and
100 to 240 VAC
24 VDC
Can be used for input power supply.
Section 3-4
63