User manual FUJITSU SIEMENS ESPRIMO MOBILE PORT REPLICATOR GETTING STARTED

[. . . ] Housing Open Control Supervision PSU Fan 1* Control Supervision Control Supervision CPU Fan AUX Fan 2, 3, 4 Silent Fan Controller CPU Slowdown (Throttling) Message LED System Sleep or System Power Off System Reset * with special, controllable power supply fans only Product Facts Issue: October 2005 Product: Silent Fan Page 3 / 5 Silent Fan Controller messages The Silent Fan controller itself has only one means of reporting faults and events: the Message LED. This LED can be connected to the front panel and flashes at approx. 2 Hz as soon as the Silent Fan controller reports an event (independently of the operating system). The following events are indicated: Fan failure (The microcontroller detects a stationary fan after two seconds, attempts to restart it by pulsing for approx. [. . . ] Location of the components on the mainboard A Fujitsu Siemens Computers Premium mainboard contains the following relevant components: Silent Fan Controller Onboard temperature sensor Connector for controllable power supply Connector for CPU fan Connector for additional fan (optional) Connector for external temperature sensor (optional) Connector for case open switch (intrusion) Please check the datasheet and short description (manual) to find the position of the components on each mainboard. Supported hardware 4-pin fans All newer main boards support fans with four connecting lines. In this case three of the lines are connected identically to the 3-pin fan (upwards compatibility), the fourth pin is used here for speed control. Since 12 V is always present at the voltage pin here 3-pin fans always rotate at full speed unless the fan has a separate control system. The speed of a 4-pin fan is controlled via a pulse width modulated (PWM) signal at pin 4. This does not ensure that a fan actually switches off if the silent fan controller arranges this since the assignment of the speed happens in the fan. In simple terms the Silent Fan Controller specifies the speed in percent. Ideally the fan should rotate at full speed at 100%, at around half speed at 50% and should be stopped at 0%. This is unfortunately not the case with each fan. Please refer to the specification of the relevant fan for more details. 3-pin fans Commercially available uncontrolled fans with three connecting leads are required for older mainboards. Two of the connecting leads are used for the voltage supply, while the third transmits the current fan speed (Sense Pin). Some manufacturers also offer independently controlled fans. The CPU is throttled before the CPU fan starts to operate. Auto This setting is appropriate for most standard systems and is set ex works. Performance and noise generation are weighted equally. Features: Fans operate at minimum speed at low temperatures. The CPU is throttled as soon as the fans are speeded up. Enhanced Cooling This is the right setting for systems with high performance requirements where noise level is not so critical. Features: Fans operate at minimum speed at low temperatures. The CPU is not throttled until shortly before the critical temperature is reached. The setting selected in the BIOS is saved and automatically restored at each system start. Software Fujitsu Siemens Computers offer a software tool capable of interpreting Silent Fan controller data. Some device settings can also be changed. [. . . ] SystemGuard (for Windows) SystemGuard reads measured values directly from the Silent Fan controller and displays them in edited form. Temperatures and fan speeds are shown and presented graphically together with the corresponding numeric values. SystemGuard also allows fan-sensor relationships to be changed and the throttling temperature to be set. Settings selected with SystemGuard are only valid until the next restart. [. . . ]