ADC 150-1122-03, User Manual

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Appendix B - Technical Reference 150-454-111-06
34 February 25, 2000 HRE-454
service and could be shown with bidirectional doubler header arrows. The brown/red pair in Group 1 is used to
access the order wire pair as described in
“Grounding” on page 13 .
Table 12 on page 51 shows how the two spare red and white pairs in both groups are used in the HRE-454
List 5 and List 6 enclosures to power the four slots for HLU-431 List 1B applications. The four spare pairs used
to access the HLU-431 system relay alarm controls are also shown.
The wiring from the cable stub entry to the card cage connectors and to the order wire connector is factory
installed.
The wiring diagram ( Figure 15 ) is located on the inside of the stainless steel dome for easy reference.
Figure 15. HRE-454 Interface Wiring Diagram and Cable Assignment Drawing.
Each power pair must be fused at 1.5 amps to prevent the 48 Vdc power source from current
overloads.
Group 1 pair powers slots 1 and 2 while Group 2 pair powers slots 3 and 4. This configuration
splits the current load between the two pairs.