Advantech IPC-623 Series Uživatelský manuál stáhnout pdf (Strana 26)

IPC-623 User's Manual

2.7 Front Panel Switches

The front panel switches are used for system power, system reset and alarm reset.

Power On/Off Switch Used for switching the system power on or off.

System Reset Switch Reinitializes the system. This switch is similar to the hardware reset button.

Alarm Reset Switch For suppressing or stopping an audible alarm. Whenever a fault in the system

occurs (e.g. fan failure, overtemperature, improper backplane voltage), an

audible alarm is activated. Pressing this button will cause the alarm to stop.

2.8 Cooling Fans

Three cooling fans are located within the chassis. All of them are hot-swappable and provide the

system with ample cooling by blowing air inward. When a cooling fan shuts down, the system will

sound a continuous alarm. To turn the alarm off, press the alarm reset switch on the front panel. How-

ever, you will have to replace the failed fan immediately.

Replacing the cooling fan

1. Loosen the fixed screw located on top of the fan unit.

2. Use the screw to pull out the fan unit.

3. Replace the cooling fan.

4. Tighten the screw in order to secure the cooling fan unit.

2.9 Alarm Board

The alarm board is located in the rear section, between the cooling fan and the backplane. It gives an

audible alarm when:

a. One of the cooling fans fails

b. Temperature inside the chassis rises to an excessive level

c. A problem occurs in one of the backplane voltage levels

To stop this continuous alarm, press the alarm reset switch at the front panel. Please see the appendix

for further details.

Figure 2-8

Figure 2-9

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Advantech IPC-623 Series Uživatelský manuál Strana 26