MPT 700
16
3.3 Mode of operation 3 - heating with variable pulse width and
spacing
•
In this mode of operation, no fixed pulse widths are defined.
•
The pulse width or the pulse spacing changes as a function of the setting.
•
Max. pulse frequency = 1 / (min. on time + min. off time)
•
The maximum pulse frequency is reached at a setting corresponding to the
value entered for parameter 28 and 29 ('XX' in diagram).
•
Even before the unit changes from pulse operation to a continuous pulse, the
minimum off time never falls below the set parameter value.
Pulse diagram:
1. setting 1%
⇒
min. on time / max. off time
2. setting 1%...XX%
⇒
min. on time / off time is reduced
3. setting XX%
⇒
min. on time / min. off time
maximum pulse frequency
4. setting XX%...99%
⇒
min. off time / on time is increased
5. setting 100%
⇒
continuous pulse
XX%
⇒
value in parameter 28 (10...90%)
