Brake temp A320
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Joined: May 2009
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From: Russia
Brake temp A320
Hello! I have never ever seen the brake temperature on ECAME wheel page lower than +5 deg even when the a/c have been on the ground for a long time with OAT -20 deg. Any ideas?
Joined: Mar 2005
Posts: 731
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From: England
The temp range the BSCU can deal with is 0 to 1000 degrees C.
This is down to the output voltage of the Brake Temp Monitoring Units on each gear, they amplify the output voltage of each brake temp sensor to a voltage from 1 to 9V.
The BSCU takes 1v as 0 deg C and 9v as 1000 deg C , at 0 deg C and below there will be no discernable output from the temp sensors so the BSCU defaults to 0.
Any voltage out of this range caused by a short circuit or probe failure will show XX on the lower ECAM DU.
This is down to the output voltage of the Brake Temp Monitoring Units on each gear, they amplify the output voltage of each brake temp sensor to a voltage from 1 to 9V.
The BSCU takes 1v as 0 deg C and 9v as 1000 deg C , at 0 deg C and below there will be no discernable output from the temp sensors so the BSCU defaults to 0.
Any voltage out of this range caused by a short circuit or probe failure will show XX on the lower ECAM DU.
