07/2020
Corona II
– LED Line Scan Illumination
PMA_CHR_CD40069_R05_Manual_Corona-II_XLC4
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8
Operating support and application samples
8.1 Controlling fans with LED control unit XLC4
If the XLC4 controller is connected to one or more Corona II units, it permits to control a
cooling unit to perform a stable temperature for save and homogeneous operation of the
LEDs.
In the Corona II a temperature-sensing device monitors the current working temperature of the
module. The temperature values of the connected Coronas are permanently read out by the
XLC4 controller and are used as input data for the temperature control function.
8.1.1 Adapting the cooling device to the XLC4
The fan (or another type of cooling device) is connected at the 4-terminal connector X5 of the
XLC4-1 unit.
Pin 4: VOUT Pin 2: GND
Figure 8-1:
Connecting the fan to the XLC4 without fan monitoring
Figure 8-2:
Connecting the fan to the XLC4 with fan monitoring
If the XLC4 measures a temperature higher than the switch-on level, the input voltage of the
XLC4 is switched to VOUT.
The maximum output current for the VOUT port is 1.5A
Note that the overall input current of the supply input is limited. The current sunk at VOUT
must be added to the calculated input current.
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