User manual

ACP-4010 User Manual 24
Chapter 4 Alarm Module
The alarm board is located behind the cooling fan near the middle section.
The alarm board makes an audible alarm when:
a. Any power supply module of the redundant power supply fails
b. One of the cooling fans fails
c. Internal temperature of the chassis is too high
To stop the alarm beep, simply press the Alarm Reset button on the front
panel and then take the necessary action to fix it.
4.1 Alarm Board Layout
The layout and detailed specification of the alarm board are given below:
Figure 4.1: Alarm board layout
4.2 Alarm Board Specifications
Input Power: +5 V, +12 V
Input Signals:
• 7 fan connectors
• One ‘thermal sensor’ connector (supports up to 8 thermal sensors in
series)
• One ‘power good’ input
• One ‘alarm reset’ input