Description of parameters:
P1: On time of heating clocking
With this parameter, you can set the on time of the clocked heating phase. Clocking the output
relay is used for gentle heating of solid fat.
P2: Off time of heating clocking
With this parameter, you can set the off time of the clocked heating phase.
P3: Hysteresis K1
The hysteresis is arranged symmetrically at the reference value, i.e. above and below the
switching point, 50 % of the defined total hysteresis are effective.
It must be noted that, in the case of small hysteresis values, the switching frequency will increase
and the service life of the output relays will be reduced accordingly. In critical cases, the controller
can be equipped with semiconductor relays.
The hysteresis will only be effective if "Pr.4" and the thermostat function are activated.
P4/P5: Upper/lower reference value limitation
The reference value setting range can be restricted, i.e. both an upper and a lower limit can be
defined. This ensures that the end user of a system cannot set reference values which are
inappropriate or dangerous for the application.
P6: Actual value correction
A correction can be defined for the actual value. This correction will be effective additively in the
whole measuring range.
P7: Clock end below reference value
With this parameter, you can terminate the clocked heating phase while the temperature is still
below the reference value. If clocked heating is to be active until the reference value is reached,
set P7=0.0 K.
P8: Proportional term ("Pr.1")
Setting of proportional term for PID program "Pr.1". In the proportional term, power supply is
reduced continuously by switching the output periodically until it is zero at the reference value.
P9: I-term ("Pr.1")
Setting of integral factor for PID program "Pr.1". The strength and effect of the I-term is defined.
This setting and the cycle time Tp will result in the integral time Tn. If the factor is set to "0", there
is no I-term.
P10: D-term ("Pr.1")
Setting of differential factor for PID program "Pr.1". The strength and effect of the D-term is
defined. This setting and the cycle time Tp will result in the derivative action time Tv. If the factor is
set to "0", there is no D-term.
P11: Cycle time ("Pr.1")
Setting of cycle time for PID program "Pr.1". The cycle time primarily creates the time reference to
the controlled system and defines the length of a switching period within the proportional term, for
example.
P12-P15: PID parameters ("Pr.2")
Settings according to parameter group "P8-P11" for PID program "Pr.2".
P16-P19: PID parameters ("Pr.3")
Settings according to parameter group "P8-P11" for PID program "Pr.3".
Summary of Contents for ST96 Series
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