System diagnostics, 1 temperature alarms, 2 power supply unit – Rockwell Automation 8000 Series TMR System User Manual

Page 27: 3 feed failure, Fault finding, 1 fault detection, 2 fault, Annunciation, Fault finding techniques

OPERATOR AND MAINTENANCE MANUAL

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6. SYSTEM DIAGNOSTICS

The 8000 Series

System diagnostic requirements will depend upon client

requirements. The recommended minimum diagnostics are included in the
Software manual. Whilst some alarms indicate a fault on the module (which require
replacement), others are used for analysis of the 8000 Series

System and indicate

a fault in a secondary component.

6.1 TEMPERATURE ALARMS

Each module has dedicated monitoring points for temperature. A high temperature
may indicate a faulty fan unit.

6.2 POWER SUPPLY UNIT

Redundant or N+1 configuration tolerates the loss of a power supply unit. A Power
supply fault is annunciated via status contacts from the power supply to inform the
operator that a power supply needs replacing.

6.3 FEED FAILURE

Should a system feed fail, and the two power feeds are isolated up to the 8000
Series

System, all three slice LED’s flash red on all modules.