Page 8 of 18 APHITEMPCON001-11-04
Heating/Cooling+TemperatureLimitationControl
Output2 can be used for temperature limitation control. To select this function, 2 temperature set
pointsmust be pre-set. One is in themid of proportional bandof output1 (CSP / HSP) asmain
setting temperature. The secondone is the temperature limitation of heating or cooling (ASP).
In thismode if themeasured temperature is higher (inheatingmode) or lower (in coolingmode)
than temperature limitation, output2will closeand output analarming signal. The control logic is
seen inDiagram4 and 5.
Diagram4: Cooling+Temperature Limit Control.
Output 1
Cooling
50%
ValveOpen
100%
Temperature Increase
ValveClose
0%
Output 2
Alarm
CSP
ASP
