ABB Relion 620 Series - Page 237

3.20.2.1 Function block
Figure 117: Function block
3.20.2.2 Functionality
Ethernet channel supervision SCHLCCH represents X1/LAN, X2/LAN and X3/LAN
Ethernet channels.
An unused Ethernet port can be set "Off" with the setting Configuration >
Communication > Ethernet > Rear port(s) > Port x Mode. This setting closes the
port from software, disabling the Ethernet communication in that port. Closing an
unused Ethernet port enhances the cyber security of the relay.
3.20.2.3 Signals
Table 213: SCHLCCH1 output signals
Parameter Values
(Range)
Unit Step Defaul
t
Description
CH1LIV
True
False
Status of Ethernet channel X1/LAN.
Value is "True" if the port is receiv-
ing Ethernet frames. Valid only when
Redundant mode is set to "None"
or port is not one of the redundant
ports (LAN A or LAN B).
LNK1LIV
Up
Down
Link status of Ethernet port X1/LAN.
Table 214: SCHLCCH2 output signals
Parameter Values
(Range)
Unit Step Defaul
t
Description
CH2LIV
True
False
Status of Ethernet channel X2/LAN.
Value is "True" if the port is receiv-
ing Ethernet frames. Valid only when
Redundant mode is set to "None"
or port is not one of the redundant
ports (LAN A or LAN B).
LNK2LIV
Up
Down
Link status of Ethernet port X2/LAN.
1MRS757644 H Basic functions
620 series
Technical Manual
237