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07/2020
Corona II
– LED Line Scan Illumination
PMA_CHR_CD40069_R05_Manual_Corona-II_XLC4
157
8.7.4 The fans do not work
Description:
The module gets hot and the fans don’t start working.
Possible reason:
The new values of the FC command have not been saved to the controller.
The controller has not been repowered after setting the fan modes with the command FA.
Solutions:
Check
the values of the switching temperatures by using “FC”; set correct values by using
e.g. “FC 50,55 W”. Don’t forget the “W” to save the values.
Check the sta
te of “FA” by using the command. Set correct values for “FA” and repower
the controller.
8.7.5 Temperature monitoring shows wrong or periodically changing values
Description:
The temperature function shows that values are wrong or changing too fast.
Possible reason:
Due to EMC effects, the I²C communication is disturbed. This might occur primarily at the
use of longer cables, e.g. 10 m.
Solutions:
Connect the shielding of the cable to ground.
Perform a firmware update to 5.1 or higher. There are new functions, which double-check
the response to reduce errors from data transmission. Please contact Chromasens
support.
8.7.6 XLC4 controller is not able to detect the connected Corona reliably
Description:
The controller is not able to detect the connected Corona reliably at all boot processes.
Possible reason:
Due EMC effects the I²C communication is disturbed. This might occur primarily at the
use of longer cables, e.g. 10 m.
Solutions:
Connect the shielding of the cable to ground.
Perform a firmware update to version 5.1 or higher. There are new functions which
double-check the response to reduce errors from data transmission. Please contact
Chromasens support.