Engineering
30
04/99 AWB 27-1184 GB
Suppressor circuits for interference sources
왘 All suppressor circuits must be installed as close
as possible to the interference sources
(contactors, relays, valves).
Screening
왘 Only use screened cables for the programming
device interface (PRG) and the Suconet K
interface of the PS4-200.
General rule: the lower the coupling impedance, the
better the screening effect. The screen is then able to
carry high interference currents.
Suppressor circuits should be provided for all
switched inductances.
If you use the Suconet K or PRG interface,
connect the screen of the cable to the housing of
the plug connector. The housing of the socket is
connected via a capacitor to the earth terminal of
the power supply.
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