19
ENG
clima +030220641 - rel. 1.0 - 07.12.2007
range def. UOM
This chapter describes the temperature and humidity control modes
available.
The control modes for the di erent models of clima are based on a set of
parameters, divided into two levels:
Level 1, basic:
• main settings, always required;
Level 2, advanced:• used to customise the features of the controller.
Important note: Some parameters included in the advanced
level, are forced to take on default values in the basic level or are
linked to other parameters in the basic level.
This rule especially applies to the control di erentials. In each operating
mode, the links between the various basic and advanced levels are
speci ed.
Note:
Parameters with forced values are NOT visible from the
supervisor:
if level 1 is active, the level 2 parameters are not used but rather •
replaced by the default values or by the link value with the level 1
parameters; the supervisor can read and set the level 2 parameters that
are however not e ectively used for the control functions.
the level 2 parameters are e ectively used when level 2 is activated.•
5.1 (T) temperature control with single
output
This is used in simple applications to send a start signal to an air-
conditioner or heat pump/boiler via the relay. The analogue output can
be used alternately or together with the relay output to:
control a modulating hot or cold water valve;•
as an additional proportional control step to the relay.•
Dipswitch con guration:
dip1: OFF
dip2: ON
dip3: OFF
This control mode is available in both cooling and heating mode, the
selection is made using dipswitch 4, or from the supervisor serial
connection or digital input.
Depending on the value of LE (level), either only the basic parameters
(LE=1) or all (LE=2) can be set.
LE=1
Set point
Temp.
Output
R2
dIF
10 V
0 V
Fig. 5.a
LE=2
Set point
Temp.
Output
dS1
dFA
R2
dIF
10 V
0 V
dSA
Fig. 5.b
Single-stage temperature control only in heating mode. In cooling mode the
situation is diametrically opposite with reference to the set point.
Parameters involved:
Code Description Default LE
Value or
link if LE
= 1
day set point in cooling 24.0 °C 1 -
night set point in cooling 26.0 °C 1 -
day set point in heating 20.0 °C 1 -
night set point in heating 18.0 °C 1 -
dIF
temperature di erential 1.0 °C 1 -
dFA
analogue output di erential 1.0 °C 2 = dIF
dS1
relay o set 0.0 °C 2 = 0
dSA
analogue output o set 0.0 °C 2 = 0
Tab. 5.a
Note: When LE=1 proportional and ON/OFF control overlap,
therefore modifying parameter dIF changes the di erential for
both.
Note: Passing to level 2 allows the two types of control,
proportional and ON/OFF, to be positioned independently.
Parameters dSA and dS1 can have both positive and negative values,
allowing the two types of control, proportional and ON/OFF, to be set as
desired.
5.2 (T2) temperature control with double
output
Two-stage temperature control only used to send a start signal to an air-
conditioner or heat pump/boiler with two step operation. The analogue
output can be used alternately or together with the relay output to:
control a modulating hot or cold water valve;•
as an additional proportional control step to the relay.•
Dipswitch con guration:
dip1: OFF
dip2: OFF
dip3: ON
This control mode is available in both cooling and heating mode, the
selection is made using dipswitch 4, or from the supervisor serial
connection or digital input.
LE=1
Set point
Output
Temp.
dIFdIF
10 V
0 V
R1
R2
Fig. 5.c
LE=2
Set point
Output
Heating
Temp.
dS1
dIFdF2
dSAdFA
R1
R2
Fig. 5.d
Two-stage temperature control only in heating mode. In cooling mode the
situation is diametrically opposite with reference to the set point.
5. FUNCTIONS
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