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18<br />
Control of <strong>MTR</strong>E pumps<br />
Control modes of <strong>MTR</strong>E pumps<br />
<strong>MTR</strong>E pumps can be connected to an external sensor<br />
enabling control of pressure, differential pressure,<br />
temperature, level, differential temperature or flow.<br />
<strong>MTR</strong>E pumps can be set to two control modes -<br />
controlled or uncontrolled operation.<br />
In controlled operating mode the pump is<br />
automatically operating according to the desired<br />
setpoint of the control parameter. The illustration below<br />
shows a pump with flow control as an example of<br />
controlled operation.<br />
In uncontrolled operating mode the pump operates<br />
according to the constant curve set.<br />
Controlled operation Uncontrolled operation<br />
H<br />
Qset<br />
Constant flow Constant curve<br />
Fig. 14 Controlled and uncontrolled operating modes<br />
The pumps are set to uncontrolled operation from<br />
factory.<br />
Besides normal duty (constant flow and constant curve)<br />
the operating modes Stop, Min. or Max. are available.<br />
Fig. 15 Max. and min. curves<br />
H<br />
Q<br />
H<br />
Min.<br />
Max.<br />
Q<br />
Q<br />
TM01 0684 1997<br />
TM00 5547 0995<br />
<strong>MTR</strong>(E), <strong>MTC</strong>, <strong>MTA</strong>
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