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23
+
DC
–
Diode for surge absorption
AC
Surge absorber
RY
RY
DC relays
AC relays
Note:
Connect the diode and surge absorber as close as possible to the relay. Use
a diode capable of withstanding a voltage five times higher than the circuit
voltage.
SOL
Surge absorber
Solenoids
5.
Insert a noise filter into the power supply inlet if noise enters the power
line (e.g., when it is connected to the same power supply as an electric
welder or an electric spark machine or when there is any source gener-
ating high frequency noise).
6.
Twisted pair cable is recommended for power lines.
7.
For grounds, use thick cable with a cross-sectional area of at least 1.25
mm
2
.
Wiring
Section 2–2