Integral XT
24
Device description
YAWE0028 / 24/06/2016
The safety system conforms to DIN EN 61010-2-010. A dual-channel system is used in which two mi-
cro-controllers monitor one another. Apart from the outflow temperature or temperature probe, there is
a second safety temperature probe (Pt100) for the safety circuit for switching off due to excessive
temperature and for monitoring the outflow temperature probe. This fulfills the requirements of
DIN EN 61010-2-010. The over temperature switch-off point is displayed by pressing the key
on
the Master.
Changing the over temperature cut-off point: (
þ
The level in the expansion vessel is acquired by the SelfCheck Assistant in 15 levels. If the minimum
level is undercut, the pump, heating and refrigerating machine are switched off. The behavior in the
case of an excessive level can be set (
þ
7.16). Different reactions can be chosen depending on the
thermostatic medium.
With low level, over temperature or other alarms the SelfCheck Assistant switches the heater off on all
poles. The pump and the refrigerating machine are also switched off.
This fault switch-off remains, i.e. once the fault has been rectified the alarm must be released with the
reset key
.
Other device functions are described in the corresponding sections and in Section 7 (Starting up).
4.6
Programmer and ramp function
The units are equipped with a programmer function which enables five temperature/time programs to be
saved. Each program consists of a number of temperature/time segments. These also include details of
how often the program is to be executed. Up to 150 segments can be distributed amongst the five pro-
grams (
þ
With the ramp function a rate of change can be directly entered in °C/unit time.
4.7
Interfaces
As standard, the device is fitted with the following sockets:
•
One socket (10S), for an external Pt100 temperature sensor.
•
Two sockets (70S), for the Command remote control and for LiBus Components.
•
An RS232/RS485 interface (65S) at the back of the Command remote control.
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