F37 - 2nd stage operation mode (OUT2):
[,,,0]- Depressurization
[,,,1]- Pressurization
[,,,2]- Cooling
[,,,3]- Heating
[,,,4]- Rotation
[,,,5]- Alarm
[,,,6]- Adiabatic condensation control (differential thermostat)
[,,,7]- Pressure floating evaporation control (depressurization)
[Off,]- Off output
Note¹: : In order for OUT2 to operate in cooling or heating modes, the T2 temperature sensor must be
enabled in the “[f59]- Digital input 2 operating mode”
Note²: [,,,5]- Alarm - The output will be triggered if there is any alarm.
F38 - Pressure Setpoint OUT2:
This is the reference value for pressure control.
F39 - Pressure control differential (Hysteresis) OUT2:
It is the pressure difference (hysteresis) between switching control output ON and OFF.
F40 - Minimum pressure setpoint allowed for the end user OUT2:
Avoids regulation of excessively low setpoint pressures by mistake.
F41 - Maximum pressure setpoint allowed for the end user OUT2:
Avoids regulation of excessively high setpoint pressures by mistake.
F42 - Lower transducer pressure limit P2 (pressure at 4mA):
Pressure applied to the pressure sensor when the output current is 4 mA.
F43 - Upper transducer pressure limit P2 (pressure at 20mA):
Pressure applied to the pressure sensor when the output current is 20 mA.
F44 - Transducer pressure offset P2:
Allows variants in the transducer pressure reading to be compensated.
F45 - Low pressure in transducer P2 alarm:
F46 - High pressure in transducer P2 alarm:
These are the minimum and maximum values for triggering the pressure alarm in the P2 transducer.
If these values are exceeded, the instrument displays low pressure [Plo2]or high pressure [Phi2],
messages, but these events only show up in alarms after the time set in the “[f57]- Alarm validation
time” setting.
F47 - OUT2 temperature setpoint:
It is the reference value for the temperature control.
F48 - Temperature control differential (Hysteresis) OUT2:
It is the temperature difference (hysteresis) between switching control output ON and OFF.
F49 -Minimum temperature setpoint allowed for the end user OUT2:
Avoids regulation of excessively low setpoint temperatures by mistake.
F50 - Maximum temperature setpoint allowed for the end user OUT2:
Avoids regulation of excessively high setpoint temperatures by mistake.
F51 - T2 sensor temperature indication offset:
Allows compensating deviations in the sensor temperature reading.
F52 - Low temperature alarm sensor T2:
F53 -High temperature alarm sensor T2:
These are the minimum and maximum values for triggering the temperature alarm in the T2 transducer.
These alarms are validated only after the time specified in the “[f57]- Alarm validation time” setting.
F54 - Time for setpoints validation (OUT2):
Upon reaching the setpoint the pressure or temperature must remain in this condition until this time has
elapsed and then switch off the control output (it avoids overshooting in the pump/compressor
activation).
This function can be disabled by adjusting it to the minimum value 0 [no,,].
F55 - Minimum output off time (delay between activations) (OUT2):
It is the minimum time the output will remain off, i.e. the length of time between the last start up and the
next stop. The main purposes of this function are: minimize interferences in the mains of the facility
caused by the simultaneous activation of loads and avoid unnecessary activation of loads when there
are fast variations of pressure in the system.
This function can be disabled by adjusting it to the minimum value 0 [no,,].
F56 - Maximum output operating time OUT2 for maintenance (hourmeter):
Whenever the output is activated, the apparatus will count its operating time. When the counted time is
equal or longer than the one set in this function, the display will show the message [Man2], signaling
that the compressor/pump must be serviced.
F57 -Alarm Validation Time (OUT1 and OUT2):
This is the time that a (pressure or temperature) alarm will remain disabled even in alarm conditions.
This inhibition time starts to be counted after the power on delay expires.
A low pressure ([Plo1] or [Plo2]) and high pressure ([Phi1] or [Phi2]) event needs to
remain in this condition for the time set in this function so that the instrument can generate low pressure
([AP1L] or [AP2L]) and high pressure ([AP1h] or [Ap2h]) alarms.
The low temperature ([At1L] and [At2L]), high temperature ([At1h] and [At2h]), sub-
cooling ([ASbL] and [Asbh]), superheating ([ASPL] and [ASPh]), filter change ([Af1l])
alarms and low water level alarm [ALLo], are also validated only in the time set in this function.
The external alarms for the digital inputs ([din1] and [din2]), do not have a time for validation.
If an alarm is inhibited by the user (by pressing the > key for two seconds), this time is reset.
This function can be disabled by adjusting it to the minimum value 0 [no,,].
F58 - Operating mode of the digital input 1:
It allows choosing the operating mode of the digital input 1.
[,,,0]- Disable
[,,,1]- Temperature sensor 1
[,,,2]- Enables 1st stage control (OUT1) (external switch, N.O. contact)
[,,,3]- Enables 1st stage control (OUT1) (external switch, N.C. contact)
[,,,4]- Time reset for rotation and choice of output (pulser, N.O. contact)
[,,,5]- Time reset for rotation and choice of output (pulser, N.C. contact)
[,,,6]- External alarm [din1] functioning in the OUT1 output turning it off (N.O. contact)
[,,,7]- External alarm [din1] functioning in the OUT1 output turning it off (N.C. contact)
[,,,8]- Alarm reset for filter change (pulser, N.O. contact)
[,,,9]- Alarm reset for filter change (pulser, N.C. contact)
[,,10]- Inhibition of alarms (N.O. contact)
[,,11]- Inhibition of alarms (N.C. contact)
F59 - Operating mode of the digital input 2:
It allows choosing the operating mode of the digital input 2.
[,,,0]- Disable
[,,,1]- Temperature sensor 2
[,,,2]- Enables 1st stage control (OUT2) (external switch, N.O. contact)
[,,,3]- Enables 1st stage control (OUT2) (external switch, N.C. contact)
[,,,4]- Flow switch (N.O. contact)
[,,,5]- Flow switch (N.C. contact)
[,,,6]- External alarm [din2] functioning in the OUT2 output turning it off (N.O. contact)
[,,,7]- External alarm [din2] functioning in the OUT2 output turning it off (N.C. contact)
[,,,8]- Reverses the state of the cyclical timer (pulser, N.O. contact)
[,,,9]- Reverses the state of the cyclical timer (pulser, N.C. contact)
[,,10]- Inhibition of alarms (N.O. contact)
[,,11]- Inhibition of alarms (N.C. contact)
F60 - Rotation time between OUT1 and OUT2:
If the “[f37]- 2nd stage (OUT2) operating mode” function is set to rotate, the OUT2 output will operate
as a backup for the OUT1 output, thus activation of the outputs will alternate over time causing each
pump to work for a certain time and accumulate similar usage times.
After the time set in this function is exceeded, the control output will be alternated in the next cycle.
Note: If the “[f37]- 2nd stage (OUT2) operating mode” function is set to rotate, the control parameters
(pressure, temperature and alarms) related to the 2nd stage will be ignored, because OUT2 control will
be related to the 1st stage parameters.
F61 - Flow switch validation time:
Operating in rotation, pressurization, or depressurization mode, the flow switch contact is expected to
be closed as soon as an output is activated (OUT1 or OUT2).
Operating in pressurization or depressurization mode: If the flow switch is not triggered during the
time set in this function, the number of attempts to alert about a lack of flow is increased.
Operating in rotation mode: If the flow switch is not triggered during the time set in this function, the
currently active pump is turned off, the number of attempts to alert about a lack of flow is increased and
the running attempt goes to the other pump.
If the flow switch is not enabled in the “[f59]- Operating mode of digital input 2” function, this validation
will not be run.
This function can be disabled by adjusting it to the minimum value 0 [no,,].
F62 - Number of attempts to alert about lack of flow:
If the number of attempts to alert about a lack of flow set in this function is reached, the outputs are
turned off and a message on the lack of water flow [Flo,]. In this case, the outputs remain off and the
system can only be re-established by resetting the rotation (by digital input or pressing the >key (see
item 6.3.8)).
The number of attempts for each output is reset when the flow switch is closed.
F63 - Cooling fluid:
Allows to define the cooling fluid that will be used in the calculations for superheating, subcooling,
floating condensation, and floating evaporation.
[,,,1]- R22
[,,,2]- R32
[,,,3]- R134A
[,,,4]- R290
[,,,5]- R404A
[,,,6]- R410A
[,,,7]- R507
[,,,8]- R600A
[,,,9]- R717
[,,10]- R744
F64 - Superheating calculation:
The superheating control indicates how much gas is above the saturation temperature (boiling point) at
a certain pressure.
A pressure transducer in the suction line and a temperature sensor at the evaporator outlet or in the
compressor input (total) is required.
Superheating = suction temperature - saturated vapor temperature (flow curve).
[,,,0]- Disable
[,,,1]- Performs the calculation through the P1 pressure transducer and T1 temperature sensor
[,,,2]- Performs the calculation through the P2 pressure transducer and T2 temperature sensor
[,,,3]- Performs the calculation through the P1 pressure transducer and T1 temperature sensor and
turns the OUT1 output off in the event of low superheating or high superheating alarms
[,,,4]- Performs the calculation through the P2 pressure transducer and T2 temperature sensor and
turns the OUT2 output off in the event of low superheating or high superheating alarms
Note: When a stage is set as an alarm, rotation, control of semi-artesian wells and water tanks or filter
control, the corresponding output will not be turned off in the event of a low superheating or high
superheating alarm.
F65 - Low superheating alarm:
Temperature limit for indicating a low superheating [ASPL].
A low superheating indicates a high dosage of cooling fluid in the evaporator, which may damage the
compressor through the intake of liquid.
F66 - High superheating alarm:
Temperature limit for indicating a high superheating alarm [ASPh].
A high superheating indicates a low dosage of cooling fluid in the evaporator, which may cause high
temperatures in the compressor through the intake of superheated gas, in addition to reduced
evaporator capacity and reduced compressor operating life.
