6.9 Dynamic heatlimiter
This section is relevant for:
n
Integral XT devices
With the dynamic heat limiter, you limit the heating output of the device. At
low flow rates at the heaters, there is a risk that the heat transfer liquid will
overheat locally. This can lead to premature aging, oil cracking with silicone
oils (depolymerization) or boiling.
Fig. 52: Actuating signal
Start
- 150 °C
End
- 200 °C
Actuating signal - 50 %
Example
Personnel:
n
Operating personnel
1.
Press the Enter key to open the menu.
2.
Select the menu items
Setup
Control
Dynamic heat limit
.
The submenu opens.
3.
Enter your values and press the Enter key to confirm.
Menu items
Description
Start
You use the values for Start and End to specify a temperature range, in which the
power of the heater is linearly limited to the entered value of the actuating signal.
The heater works at reduced power above the entered end temperature ([End]). The
heater works at full power below the entered start temperature ([Start]).
End
Actuating signal
You enter the value for limitation of the heating output in percent here.
The dynamic heatlimiter is active.
6.10
Cooling
The cooling unit of the devices is operated in the standard setting [autom.].
Depending on the temperature and operating status, the cooling unit is
automatically switched on or off. You can switch the cooling unit on or off
permanently via the menu. In the case of sensitive control processes, control
fluctuations can be prevented by automatically switching the cooling unit on
or off.
V6
Integral Process Thermostats and High-Temperature Thermostats
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