16.AUXILIARY FUNCTIONS
16.3.1.1 Temperature control using two sensors (Differential TBS-TBU)
The control output is activated whenever the differential between the readings of the two sensors is lower than the Activation differential
(
1.7.3.x.4
) and will be shut off when the differential is greater than the Shutdown differential (
1.7.3.x.5
). In this case it is necessary to use
two sensors, one for dry bulb temperature (
1.3.x.23
) and the other for wet bulb temperature (
1.7.3.x.9
). Temperature differential control will
only be enabled when the external temperature (TBS) is higher than the value set in the parameter Minimum operating temperature (
1.7.3.x.6
). If
the shutdown differential is not reached within the time interval configured in Differential validation time (
1.7.3.x.7
) the output will be switched off
and will remain blocked until the time for the next attempt has elapsed (
1.7.3.x.8
). For the control to be carried out using the two sensors, the
parameters Temperature for activation (
1.7.3.x.2
) and Temperature for shutdown (
1.7.3.x.3
) must be set to OFF.
16.3.1.2 Temperature control using a sensor (TBS)
In this mode, only a temperature sensor is used to measure the air temperature in the environment where the condenser is located. If the Temperature
value for activation (
1.7.3.x.1
) is reached, the control output is activated until it returns to the Temperature for shutdown (
1.7.3.x.2
).
1.6.3.1.3 Temperature control using two sensors (TBS-TBU Differential and Temperature Limit)
When the four parameters: Temperature for activation (
1.7.3.x.2
), Temperature for shutdown (
1.7.3.x.3
), Differential for activation
(
1.7.3.x.4
) and Differential for shutdown (
1.7.3.x.5
), the control is done by both modes (temperature differential and temperature limits).
Whenever ate least one of the two modes have an actuation condition, the
RCK-862
plus
activates the control output of the adiabatic condensation.
In this case, the output will be activated when the temperature of the dry bulv sensor exceeds the Temperature for activation and will be shut down when
the temperature is lower than the Temperature for shutdown; or the output will be actuated when the differential is less than the Differential for activation
and will be shut down when the differential is greater than the Differential for shut down.
16.3.2 Cycle timer mode:
The control of adiabatic condensation is performed exclusively by cycling the Time On (
1.7.3.x.9
) and the Time Off (
1.7.3.x.9
). The digital
output (
1.7.3.x.8
) linked with the water control switches its operation from on to off according to the time parameters. In this case, it is suggested
to limit the period of operation of the adiabatic condensation by the parameters Start Time (
1.7.3.1.11
)and End Time (
1.7.3.1.12
).
Actuating
differential
Shutdown
differential
ON
OFF
Temperature
Ouput
Desactivation
temperature
Activation
temperature
ON
OFF
Temperature
Output
Output
Time On
Time Off
Time Off
Time On
Time On
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