ABB REG670 - Design

21.2.16.2 Design
The galvanic X.21 line data communication module uses a ABB specific PC*MIP
Type II format.
C
en07000196.vsd
IEC07000196 V1 EN
Figure 542: Overview of the X.21 LDCM module
1
23
4
en07000239.wmf
1 8
9 15
IEC07000239 V1 EN
Figure 543: 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 544
4. X.21 Micro D-sub 15 pole male connector according to the V11 (X:27) balanced
version
1MRK502052-UEN B Section 21
IED hardware
1193
Technical manual