UST500 CONTROL BOARD
06MC0074@00B0100
14/04/2010
35
Operating Modes – Temperature Control (folder PAr/tr)
Temperature control parameters can be viewed and configured in folder tr (see User Interface and Parameters chapter).
Compressor control – Temperature control
UST500 has three types of temperature control:
Temperature control parameters can be viewed and configured in folder tr (see User Interface and Parameters chapter).
The type of temperature control can be configured in parameter tr00:
•
Proportional: Calculates the power the unit must supply in relation to the distance of the air/water temperature from the setpoint.
o
tr00=0
Proportional temperature control
•
Differential: Calculates the power the unit must supply in relation to difference in temperature between two
analogue inputs
o
tr
00=1
Temperature control differential
•
Digital (motor condensing)
o
tr00=2
Digital temperature control
The regulation algorithm calculates the load to be supplied through the compressors for both heating and cooling.
Instructions are provided in the following sections on how to set parameters used to control utilities based on temperature/pressure readings
taken by the probes.
Proportional temperature control
Proportional temperature control in COOL mode
The compressor is controlled by an analogue input and by the cooling setpoint.
Cooling setpoint: this is the reference setpoint when the device works in cool mode.
The probe AIn used by the temperature regulator can be selected in parameter tr02.
N.B: Always set tr12> tr10
Power
power
*Step 1
Step 1
*Step 2
Step 2
*Only for machines with two compressors or partialized compressor.
AIn temp.
temperature read by the probe selected for temperature control in Cool.
Proportional
diagram in COOL
<IMG INF O>
339, 7
Содержание UST500
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