TE Technology TC-720 - Manual (Page 40)

3.8 The control parameters are approximate settings. Further adjustments might be needed.
Tuning Example using proportional bandwidth and integral gain:
A. Suppose that smallest PROPORTIONAL BW setting that causes oscillation was determined to be 2.1 °C.
B. It was then observed that the natural period of this oscillation was 2 minutes.
C. The PROPORTIONAL BW setting should then be set to 4.6 °C (This is calculated from 2.1 °C x 2.2 = 4.6 °C.
D. The INTEGRAL GAIN should be set to 0.27 (This is calculated from 0.54/(2 minutes) = 0.27 repeats per minute).
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