UST500 CONTROL BOARD
06MC0074@00B0100
14/04/2010
49
Table 2b - external exchanger fan parameters
Parameter
Description
COOL HEAT
FE07 FE17 External exchanger fan minimum speed in Cool/Heat
FE08 FE18 Average speed external exchanger fan in Cool/Heat
FE09 FE19 Maximum speed external exchanger fan in Cool/Heat
FE10 FE20 Select probe for external exchanger fan regulation in Cool/Heat
FE11 FE21 External exchanger fan minimum speed setpoint in Cool/Heat
FE12 FE22 External exchanger maximum speed differential in Cool/Heat
FE13 FE23 External exchanger fan speed proportional band in Cool/Heat
FE14 FE24 Maximum external exchanger fan hysteresis in Cool/Heat
FE15 FE25 External exchanger fan cut-off hysteresis in Cool/Heat
FE16 FE26 External exchanger fan cut-off differential in Cool/Heat
The fan is switched off in local or remote OFF
If the output has been configured as proportional, the parameters
PICK UP, PHASE SHIFT, PULSE LENGTH all have a meaning.
Pick-up
Each time the external exchanger fan starts, the exchanger fan is supplied at the maximum voltage level, hence the fan runs at maximum speed
for a time equal to FE02 in seconds. At the end of this time, the fan continues at the speed set by the regulator.
Phase shift
Defines a delay to offset the various electrical properties of the fan drive motors. See configuration parameters CF Configuration of Inputs-
Outputs chapter
Pulse length
Defines the duration in milliseconds of the pulse piloting the TC / or AO1, AO2 output. See chapter on configuration parameters CF
Configuration of Inputs-Outputs
The fan can be configured to make it run independently or dependent on the compressor state; you can also decide if the fan should be on or
not when the compressor is off (par FE03).
The cut-off can be bypassed for a time configurable in parameter FE04;
during this period, if the regulator requests the cut-off, the fan will run at minimum speed.
Operation in summer mode*
(see diagram A - C)
Operation in winter mode*
(see diagram B - D)
The fan is regulated on the input selected in:
FE10
see table 2b
FE20
see table 2b
•
1 = High pressure input
•
2 = Low pressure input
•
3 = External exchanger pressure input
•
4 = Internal exchanger pressure input
In cooling mode, if the fan is activated when requested by the
compressor (parameter FE03=0), permission to switch on the
compressor is given only after the fan has been running for the
minimum time set in parameter FE05;
see table 2a
In heating mode, if the fan is activated when
requested by the compressor (parameter FE03=0),
permission to switch on the compressor is given only
after the fan has been running for the minimum time
set in parameter FE06;
see table 2a
Preventilation is run to prevent the compressor from switching on at excessively high condensation temperatures.
*COOL
*HEAT
Содержание UST500
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