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IDDERO HCx-KNX TOUCH PANELS – User Guide
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Multiple notifications can be defined. Each notification will be associated to a communication object
(“Notification object”). It is possible to specify whether the notification should be triggered on every
write to the communication object, or only when the object value changes.
The text of the notification e-mail is also configurable. If the text is left empty, a default text will be
generated including the name of the notification (“Name” field) and the value that was received in the
associated communication object.
4.9 GSM
Module
The DW-GSM expansion module allows for remote access to the installation from any GSM mobile
phone, providing functions such as automatic notification of technical alarms and incidents, or remote
control of devices connected to the KNX bus by means of SMS messages or missed calls.
The DW-GSM expansion module is sold separately and is compatible with all Iddero touch panels.
For more information about configuring and using the DW-GSM module, please refer to the instruction
manual available in the download area of the Iddero website.
4.10 Internal
Thermostat
Besides being able to control any KNX thermostat in the installation, Iddero touch panels also
implement an internal thermostat function.
This thermostat function can be used with the integrated temperature sensor (HC1-KNX model), with
the DW-TS-N1P external temperature probe (HC2-KNX and HC2L-KNX models), or with any
temperature measured by an external KNX device.
General Operation
The internal thermostat uses a simple two-point control system with hysteresis. In this system, a
temperature setpoint or comfort temperature is established, as well as a hysteresis value intended to
prevent the thermostat from continuously switching on and off when the room temperature is very
similar to the temperature setpoint.
The hysteresis parameter value, specified in degrees centigrade (°C), defines a band around the
temperature setpoint where switching will not occur.
The following table shows the detailed operation of the thermostat function (T
room
= measured room
temperature; T
setpoint
= temperature setpoint set by the user).
Operating Mode
Actuators
Thermostat Off
Cool actuator = Off
Heat actuator = Off
Thermostat On, cool mode
If T
room
> (T
c
+ hysteresis / 2)
→
Cool actuator = On
If T
room
< (T
c
– hysteresis / 2)
→
Cool actuator = Off
Heat actuator = Off
Thermostat On, heat mode
If T
room
< (T
c
– hysteresis / 2)
→
Heat actuator = On
If T
room
> (T
c
+ hysteresis / 2)
→
Heat actuator = Off
Cool actuator = Off
