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Hi Francesco Here is the solution to your problem (see attached modified
project): 1. First of all, make sure you connect the output signal of the
Type2b to its "input control function", to ensure a proper hysteresis
effect 2. When you want to switch the control signal to 0 when
approaching a fix target/setpoint temperature with lower value (e.g. when
controlling a heating device), you have to use the following
procedure: a.
connect your variable temperature to the upper input of the controller b.
set the same deadband as you did c.
use the opposite of the control signal via a calculator (either use the
function Not(...), or the equation 1-...) That's the only way I found to use Type2b to do such a control. Hope this helps. François Badinier Development Engineer ICAX Ltd 1 Hatfield House
Baltic Street
West London EC1Y OST -----Original Message----- Dear Trnsys-colleague, It is unbelievable but I have spend more than one hour on
that and still doesn't work...the point is: I would like to switch off a signal when the difference
between the High Temp (fix to 22 ) and Low Temp is less than 0 and switch on
again when the difference is higher than 1.5..are you able to do that? At the moment in my deck (attached) it seems that instead
off an hysteresis loop I have just a value limit 1.5 where is ON and OFF around
it!!! Thanks a lot and suggestions are well accepted Francesco No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.709 / Virus Database: 270.14.80/2523 -
Release Date: 11/25/09 07:31:00 |
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Project6_modified.tpf
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