Advantech PCA-6190 Manuale Utente Scaricare il pdf (Pagina 34)

ACP-4320 User Manual 26

The alarm board is located under the system fan. It makes an audible alarm when:

! Any power supply module of the redundant power supply fails

! One of the cooling fans fai1s

! Internal temperature of the chassis is too high

To stop the alarm beep, simply press the Alarm Reset button on the front panel.

5.1 Alarm Board Layout

The layout and detailed specifications of the alarm board are given below:

Figure 5.1 Alarm board layout

5.2 Alarm board specifications

Input Power: +5V, +12V

Input Signals:

! 7 fan connectors

! One thermal sensor connector (connects up to 8 thermal sensors in series)

! One Power Good connector

! One alarm reset connector

! One voltage signal connector (connect from the backplane / motherboard, sup-

porting six voltages: +-12 V, +-5 V, +3.3 V and +5 Vsb)

! One HDD LED connector (connect from the CPU card/motherboard)

Output Signals:

! One LED board connector

! One Buzzer output

5.2.1 Connectors, Jumper and Pin Definition

Table 5.1: Summary of the connectors, jumper and pin definition

CN1: External power connector, standard mini 4-pin power connector

Pin 1 +12V @ 2A max. Pin 2

GND

Pin 3 GND Pin 4

+5V @ 2A max

CN4: Thermal sensor (LM75) connector

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 40 41 42

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Advantech PCA-6190 Manuale Utente Pagina 34