Earth Fault Monitor; Noise Voltage Detection; Overvoltage Detection - Pepperl+Fuchs CC-LINK Series Compact Manual

CC-Link Gateways
Diagnostics
8.2.5.2

Earth fault monitor

The earth fault monitor checks the symmetry of the AS-i voltage. If the voltage is
no longer sufficiently symmetrical, the noise immunity of data transmission is
compromised.
8.2.5.3

Noise voltage detection

Noise voltages on the AS-i cable can cause telegram errors. The noise voltage
detector monitors the AS-i circuit for AC voltages which have been generated by
neither the AS-i Master nor the slaves.
8.2.5.4

Overvoltage detection

Normally UASi+ and UASi- are in symmetry with system ground. If this potential
rises significantly, the overvoltage detector reports this anomaly.
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