ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS
74-5577–33 (US) 62
EN2B-0184 GE51 R0518 (Europe)
Module 1 Heating/Cooling
Based on the positioning signal from the basic temperature controller (X1), this
module decides whether there is a need for heating or cooling. To ensure stability
for smaller deviations as well, the module establishes a hysteresis symmetrically
around the zero point of the basic controller (50 percent). It calculates the amount of
hysteresis as follows:
Hysteresis = P3 * 0.15
In other words, hysteresis is 15 percent of the working range.
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