Front
Table 18. | Telco Alarm Pinout |
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| Pin | Description | Pin | Description |
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| 1 | MinorReset + | 9 | MinorAlarm - NC |
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| 2 | MinorReset - | 10 | MinorAlarm - COM |
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| 3 | MajorReset + | 11 | MajorAlarm - NO |
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| 4 | MajorReset - | 12 | MajorAlarm - NC |
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| 5 | CriticalAlarm - NO | 13 | MajorAlarm - COM |
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| 6 | CriticalAlarm - NC | 14 | PwrAlarm - NO |
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| 7 | CriticalAlarm - COM | 15 | PwrAlarm - COM |
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| 8 | MinorAlarm - NO | ||
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The signals on the alarm connector can be up to
9.3.1Cascading the Telco Alarm Connectors
The two telco alarm connectors can be wired independently to separate alarm controls for maximum redundancy. Alternatively, the two connectors may be ganged together to connect to a single alarm panel. Alarms that activate off the normally open [NO] contacts should be wired together differently than the cable for normally closed [NC] contacts.
Figure 24. Telco Alarm Contact Wiring for Dual Connectors
| Alarm |
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Normally Open | (Normally Open) | Normally Open | |
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NO |
| NO | |
Common | Common | Common | |
CMM 1 | CMM 2 | ||
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| Alarm |
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Normally Closed | (Normally Closed) | Normally Closed | |
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NC |
| NC | |
Common |
| Common | |
| Common |
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The interconnection diagram above shows how the two signals are wired under normal circumstances. In a failure scenario such as a disconnected cable, however, only the normally closed contact reports an error. This is identical to the behavior in a failure scenario with a single telco alarm connector.
| Intel NetStructure® MPCMM0002 Chassis Management Module |
July 2007 | Hardware TPS |
Order Number: | 49 |
