v140822
Sun. Water.
Life.
BERNT LORENTZ GmbH & Co. KG
Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29,
www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
19
9 operating mode of the controller
The final step is to choose an operating mode that matches
the demand of the pumping application. The controller can be
operated in three diffrent modes:
•
PR 11 = “0” : Manual Start and Stop - The pump ist
started and stopped by pressing
[RUN]
and
[STOP]
; the
operating frequency is adjusted manually by pressing
[UP]
+
[DOWN]
•
PR 11 = “1”: The pump will start automatically, when
sufficient power is coming from the solar generator to
exceed the minimum frequency stored in PR 14. The pump
is operated at the highest possible frequency accord-
ing to the available power from the PV generator (MPP
tracking).
•
PR 11 = “2”: Same behaviour like for PR 11 = “1”, but the
pump is not starting automatically; it has to be started
manually by pressing
[RUN]
. After that, the pump is oper-
ated at the highest possible frequency according to the
available power from the PV generator (MPP tracking).
Set PR11 (operating mode) according to the application
demand.
0
Manual START and STOP
: 1) Press [RUN] key
to operate, the initial frequency value is deter-
mined by PR12. 2) Then set the output frequency
by pressing
[UP]
or
[DOWN]
key.
1
Fully automatic operation
: Pump starts
automatically, when sufficient power is present.
The operating frequency is adjusted accoring to
the sunlight intensity (MPP tracking)
2
Manual start of automatic operation
: Press
the
[RUN]
key to start the pump, the operating
frequency is adjusted accoring to the sunlight
intensity (MPP tracking)
11 set control parameter to read-only
This step is necessary to protect the program parameters from
accidentally changes after final setup. (writing protection)
Set PR0 to 1 before Controller start up.