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RCU101 1:1 Protection Switch
The ID Bits provide information to the converter that tells the converter which slot (either primary
or backup) the converter is plugged into. The addresses are as follows:
IDB4
IDB3
1
0
1
0
2.4.2
Switch Fault/Status Connector (J11)
The RCU101 Redundancy Control Unit contains a summary Fault/Status connector that is
available to the equipment operator for the purpose of monitoring the summary fault status of
both converters as well as the individual status of the converters. The pinouts of this 15-pin D
SUB connector are as follows:
J11 DB15
1
2
3
9
4
5
10
11
12
13
14
6
7
8
15
The primary and backup summary fault relay contacts provide fault indications to flow through
the switch into one common connector. In addition, the two Form-C summary fault contacts on
the test fault connector on the rear of the RCU101 provide a Form-C closure to indicate which
converter is presently online. Continuity of these contact closures implies online status for the
indicated converter.
2.4.3
RCU101 RF and IF Rear Panel Connectors
The following paragraphs describe the RF and IF connectors located on the rear panel of the
RCU101.
2.4.3.1 J3 RF Primary
The RF Primary connector goes to the RF port of the primary converter. This connection is
made via the supplied semi-rigid cable with the RCU101 system. If the primary converter is
TM055 - Rev. 2.2
IDB2
IDB1
Position
1
0
Backup
1
1
Primary
Description
Primary Converter Summary Fault Relay Com.
Primary Converter Summary Fault Relay N.C.
Primary Converter Summary Fault Relay N.O.
Backup Converter Summary Fault Relay Com.
Backup Converter Summary Fault Relay N.C.
Backup Converter Summary Fault Relay N.O.
Switch Online Status Com. (B active/A inactive)
Switch Online Status N.C. (Primary Online) - continuity
Switch Online Status N.O. (Backup Online) - continuity
Remote Primary (Active Low)
Remote Backup (Active Low)
Switch Summary Fault Relay Com. (Active on OK/Inactive on Fault)
Switch Summary Fault Relay N.C.
Switch Summary Fault Relay N.O.
Ground
Installation
Page 2-5
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