Unit Description, IDM
19
Unit Description, IDM
This chapter describes the internal Distribution Module that distributes
+24 V DC to all DC powered units in the RBS. Distribution circuits are
protected by circuit breakers.
The IDM consists of a unit with 21 circuit breakers, four PSU cables
and connectors to the different DC powered units.
19.1
Functions
The IDM has the following functions:
•
Distributes power to all DC powered units.
•
Provides fused power distribution to the DC powered units.
•
Provides a manual connect or disconnect function of all DC
powered units.
•
Monitors the system voltage (+24 V DC).
19.2
External Interfaces
P007891B
System volta
ge
test port
DC out
15A
Climate
30A
Fan 1
5A
Fan 3
5A
Fan4
5A
TRU 1
30A
TRU 2
30A
CDU 1
5A
TRU 4
30A
CDU 2
5A
TRU 5
30A
TRU 6
30A
CDU 3
5A
CXU 1-2
DXU 5
5A
DXU/Sys.
Volt.Sens.
5A
OXU 1
5A
OXU 2
5A
OXU 3
5A
OXU 4
5A
TRU 3
30A
Operation
IDM-01
Fan 2
5A
Figure 117
The IDM
The IDM has the following external interfaces:
•
Four PSU cables
•
Battery connection (positive)
•
Battery connection (negative) and earth connection
•
System voltage test port
•
ESD wrist-strap connector
•
Power distribution connectors (see table below)
EN/LZT 720 0008
P2A
2001-11-28
211 (485)
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Summary of Contents for RBS 2106
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