ABB Relion 670 Series Application Manual page 73

1MRK 505 382-UEN E
IEC07000196 V2 EN-US
Figure 64: Overview of the X.21 LDCM module
IEC07000239 V2 EN-US
Figure 65: The X.21 LDCM module external connectors
1. Earth selection connector for IO, screw terminals, 2-pole
2. Earth pin
3. Soft earth pin, see figure
4. X.21 Micro D-sub 15 pole male connector according to the V11 (X:27) balanced version
Communication set-up, 670/650 series
Application Guide
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IEC07000239-2-en.vsdx
Communication set-up
IEC07000196-2-en.vsdx
Section 5
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