Omron SYSMAC C500-NC113, Руководство по эксплуатации

Страница: 50 / 250

3-3 Section
''
Assembling Connectors
Connector
(jack)
Small pan-head
screws
Case
3-3-4 Wiring Precautions
Operational errors can occur in most electronic control devices if they are sub-
jected to electronic noise from nearby power lines or loads. Recovery from such
errors is usually very difficult and time consuming. To avoid such noise-gener-
ated operational errors and improve system reliability, always observe the fol-
lowing precautions in wiring the system.
•
Cables must be of the required diameter.
•
Power lines (e.g., AC power supply, motor power line) and control lines (e.g.,
pulse output lines, external I/O signal lines) must be wired separately. Never
put these lines into the same duct or make them into a single bundle.
•
Use shielded cable for control lines.
•
Attach a surge absorber to all inductive loads, such as relays, solenoids, and
solenoid valves.
+
DC
--
Diode for surge
absorption AC Surge ab-
sorber
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.
Solenoid Surge absorber
Solenoids, etc.