Omron CJ - 08-2008 Operation Manual page 305

Wiring
DC Power Supplies
CJ1W-PD025 Power Supply Unit
DC power source
DC Power Source
Power Supply Capacity
Precautions when Using CJ1W-PC022 Non-insulated Power Supply Units
!Caution When connecting a personal computers or other peripheral devices to a PLC
Crimp Terminals
PD025
Supply 24 V DC. Keep voltage fluctuations within the specified range.
Model
CJ1W-PD025 19.2 to 28.8 V DC (±20%)
CJ1W-PD022 21.6 to 26.4 V DC (±10%)
The maximum power consumption is 50 W (PD025)/35 W (PD022) per Rack,
but there will be a surge current of about five times that level when the power
is turned ON.
to which a non-insulated Power Supply Unit (CJ1W-PD022) is mounted, either
ground the 0 V side of the external power supply or do not ground the external
power supply at all ground. A short-circuit will occur in the external power sup-
ply if incorrect grounding methods are used. Never ground the 24 V side, as
shown below.
Wiring in Which the 24-V Power Supply Will Short
Non-insulated
DC power supply
24 V
0 V
Power Supply
FG
Unit
The terminals on the Power Supply Unit are M4, 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
1.2 N·m. Use crimp terminals (M4) having the dimensions shown below.
7 mm max.
POWER
DC24V+
INPUT
NC
NC
Allowable voltage fluctuation range
Peripheral
cable
Peripheral device (e.g.,
CPU Unit
personal computer)
7 mm max.
Section 5-3
Screw (M4 head with self-
raising pressure plate)
0 V
257