Bedienungsanleitung Sorel LHCC (Seite 25 von 44) (Englisch)

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Mode M2: The controller changes to the set min. speed after the Speed. If the temperature difference ∆T between the reference

sensors is above the set switch on temperature difference ∆T R1, the speed will be increased. If the temperature difference ∆T

between the reference sensors is below the set switch on temperature difference ∆T R1, the speed will be reduced. If the con-

troller has decreased the speed of the pump to the smallest level and the ∆T between the reference sensors is still only ∆Toff, the

pump will be turned off.

Mode M3: The controller changes to the set min. speed after the Speed. If the temperature on the reference sensors is above the

set value to be set in the following, the speed will be increased. If the temperature on the reference sensors is below the set value

to be set in the following, the speed will be reduced.

Purging time

For this time, the pump runs with its full speed (100%) in order to guarantee a secure start-up. Only after expiration of this purging

time will the pump have a controlled speed and will switch, depending on the set variant, to the max. or min. speed. Speed.

Sweep time

With the control time, the inertia of the speed control is determined in order to prevent strong temperature deviations as much as

possible. The timespan is entered here, which is needed for a complete cycle from minimum speed to maximum speed.

Max. Speed

The maximum speed of the pump is determined here. During the setting, the pump runs in the respective speed and the flow can

be determined.

The specified percentages are variables, which may deviate more or less strongly depending on the system, pump

and pump level. 100% is the maximum possible power of the controller.

Min. Speed

The minimum speed of the pump is determined here. During the setting, the pump runs in the respective speed and the flow can

be determined.

The specified percentages are variables, which may deviate more or less strongly depending on the system, pump

and pump level. 100% is the maximum possible power of the controller.

Setpoint

This value is the control setpoint for mode 3 see " Variant " on page 24, only version 2.3, and 4. If this value is below at the

sensor, the speed is reduced. When it is exceeded, the speed is increased.

Sensor Calibration

Deviations in the temperature values displayed, for example. due to cables which are too long or sensors which are not posi-

tioned optimally can be compensated for manually here. The settings can be made for each individual sensor in steps of 0.5 °C.

Settings are only necessary in special cases at the time of initial commissioning by the specialist. Incorrect meas-

urement values can lead to unpredictable errors.

Relay functions

Free relays, i.e., relays not used in a basic scheme, can be assigned to various additional functions. Every additional function can

only be assigned once. See all additional functionssee " Function overview " on page 28.

R1 to R4: mechanical relay 230V

V1 and V2: PWM and 0-10 V output

Please pay special attention to the relay’s technical information (see "Specifications“).

The symbols shown here are displayed on the main overview screen when the special function is activated.

Heat quantity

Constant flow

If “Constant flow” is activated as the type of heat quantity metering, the approximate heat from the manually entered values for

antifreeze, its concentration and the flow from the system and the measured sensor values from the collector and storage are cal-

culated. Additional information about antifreeze, its concentration and the flow of the system is required. Additionally through the

setting offset ∆T, a correction factor can be set for the heat quantity collection. Since the collector temperature and the storage tem-

perature can be used for the heat quantity metering, depending on the system, there may be deviations from the displayed col-

lected temperature to the actual previous temperature or the displayed storage temperature to the actual return temperature.

Through the setting Offset ∆T, this deviation can be corrected.

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Sorel LHCC Seite 25

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