Omron CPM1A Operation Manual page 76

Wiring and Connections
Crimp Connectors
Caution
!
! Caution
24-VDC Power Supply
Considering the possibility of voltage drops and the allowable current, be sure to
use thick power lines.
AC
Breaker
power
supply
Note 1. Before connecting the power supply, make sure that the CPU Unit requires
an AC power supply and not a DC power supply. The CPU Unit's internal
circuitry will be damaged if AC power is mistakenly supplied to a CPU Unit
that requires a DC power supply.
2. The power supply input terminals are at the top of the CPU Unit; the termi-
nals at the bottom of the CPU Unit output 24-VDC power for external de-
vices. The CPU Unit's internal circuitry will be damaged if AC power is mis-
takenly supplied to a CPU Unit's power supply output terminals.
Always use crimp connectors for the CPM1A's power lines. Do not connect bare
stranded wires directly to terminals. Bare stranded wires connected directly to
the terminal can cause a fire.
Use M3 terminal screws.
Connect a crimp connector with a ring terminal to each terminal screw.
Tighten the terminal block screws of the AC Power Supply to the torque of
0.5 N S m. Loose screws may result in burning or malfunction.
Use a DC power supply with sufficient capacity and low ripple. For a DC power
supply used for the transistor output, use a power supply with double insulation
or reinforced insulation to conform to the EC Directives (Low-voltage Direc-
tives). The NC terminal is not used.
Twist the wires. The cross-sectional area
of each wire must be 1.25 mm
Isolating
transformer
100 to
L1
240 VAC
Ring terminal
6.2 mm max.
24 VDC
+ – COM
24 VDC
NC
Section 3-4
2
min.
L2/N
COM 01 03
NC
00 02
0 CH
01
00 02
0 CH
53