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Technical Manual – Room Temperature Controller SCN-RT1
4.5.2.4 Reset time
The reset time describes the I-amount of the controlling. The I-amount of a controlling causes an
integral convergence of the actual value to the setpoint. A short reset time indicates a strong I-
amount.
A short reset time causes that the control value approaches fast to the control value, which is set by
the proportional range. A big reset time causes a slow approach to this value.
To note is, that a reset time, which is adjusted too small, can cause across swinging. In principle you
can say each carrier the system, each bigger the reset time.
The following setting rules can be defined:
•
small reset time: fast regulating of deviations; usage at fast systems and at places with
changing environmental conditions (disturbance variables like draft); danger of swinging
across
•
big reset time: slow regulating of deviations; almost no danger for swinging across; usage at
slow systems as underfloor heating
4.6.2.5 Send control value cyclic
The parameter "Send control value cyclic" causes a cyclic sending of the actual control value. The
time shifts between two values can be also parameterized.
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