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IPC-616 User's Manual
Chapter 3 Fault-resilient Functions
3.1 Introduction
A fault-resilient IPC has a fault detection and alarm notification system. The IPC-616 monitors its own
status. See Figures 3-1 and 3-2 below. When a malfunction occurs, the unit alerts users of the need for
maintenance.
3.2 Fault Detection and Alarm Notification
The IPC-616 monitors system hardware for power failure, fan failure and overheating within the
chassis. Fault conditions are:
Power failure: Either the backplane power source (+5 V, +12 V, +3.3 V, -5 V, -12 V) or redundant
power module fails
Fan failure: Either of the two cooling fans fails
Overheating: The chassis' internal temperature has reached or exceeds the user's preset maximum safe
temperature
Once a problem is detected, an audible alarm activates and an LED alarm indicator (located on the
front door) changes color from green to red.
Figure 3-2: Controls
Figure 3-1: LED indicators
