Rievtech PR-6DC-DA-R - Defrost

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On initialization, PILOT OUTPUT NUMBER has the value 1. On initialization, if the tank is in the state
indicated and if a sensor above the water is in the ON state, when the user program is executed, the
INPUT 1 and INPUT 2 inputs are ON, INPUT 3 and INPUT 4 are OFF and OUTPUT 2 and OUTPUT3 are ON.
Assuming that the tank is full, INPUT 2 changes to OFF and OUTPUT 1 changes to OFF. PILOT OUTPUT
NUMBER indicates the value 2.
Assuming that the tank is empty, INPUT 2 changes back to ON, OUTPUT 3 changes to ON and OUTPUT 2
remains ON.
Assuming that the tank refills, INPUT 2 changes back to OFF, OUTPUT 2 changes to OFF and PILOT
OUTPUT NUMBER indicates the value 3.
Assuming that the tank continues to refill, INPUT 1 changes to OFF, OUTPUT 3 changes to OFF and PILOT
OUTPUT NUMBER indicates the value 4.
5.5.51 Defrost
Fashion: Classic:
short Description
The defrost output changes to ON when the input temperature is less than the minimum temperature for
a time T (T being the cumulative duration of passages below the minimum temperature). If the
temperature rises to higher than the maximum temperature during the defrost cycle, the defrost output
reverts to OFF even if it has not finished. This output can be triggered and stopped by means of the
corresponding inputs.
Connection
Description
Input
VALIDATION
function validation input. The function remains inactive for as long as this input is not
activated. VALIDATION is implicitly active if it is not connected.
Input
TEMPERATURE
Air temperature in °C*100 (-32768°C to 32767°C).
Input
MANUAL
DEFROST ON
Sets the defrost output to ON if the temperature is less than the maximum
temperature.
Input
MANUAL
DEFROST OFF
Sets the defrost output to OFF (Priority stop).
Output
DEFROST
The defrost output is at ON when the CUMULATIVE OPERATING TIME has elapsed.