Dc Disconnector; Night Start-Up Key; The Serial Rs232 Interface - Kaco Powador 2002 Operating Instructions Manual

S e ctio n 4 · O pera ti on
Quick start
The inverter can also be started up without any waiting period
for the purpose of testing or for the purpose of acceptance by
your power supply company.
If the inverter is already feeding into the grid, this menu item
is not available.
If there is insuffi cient solar generator power, the inverter
stops feeding into the grid after a short period of time.
AC T I O N
Keep key "2" pressed down for a short time until the
inverter switches on (relays switch audibly) and the green
grid feed LED (2) lights up. If there is insuffi cient solar gen-
erator power, the inverter stops feeding into the grid after a
short period of time.
AC T I O N
Settings are saved only upon exiting confi guration mode. If
2 minutes elapse without a key being pressed, the confi gu-
ration mode is automatically exited. The confi guration
mode can also be immediately exited by pressing both keys.
As a confi rmation, "Settings saved" appears on the display.
The settings are now permanently saved in the Powador
inverter.
4.6

DC disconnector

The inverters include an internal DC disconnector, which
allows for the inverter to be disconnected from the photo-
voltaic generator in case of repair or fault.
To disconnect the inverter from the photovoltaic generator,
turn the internal DC disconnector on the underside of the
inverter from the ON (1) position to the OFF (0) position (see
fi gure 4.1).
When delivered, the inverter's internal DC disconnector is in
the OFF (0) position.
4.7

Night start-up key

The unit switches off in the evening as nightfall approaches.
At this point, nothing is shown on the display. In order to
retrieve the values from the current day, (daily yield, daily
hours of operation and max. grid feed power) after the display
switches off, the unit can also be activated during the night by
pressing the night start-up key on the underside of the
inverter.
AC T I O N
To do this, press the night start-up key (see fi gure 4.1 -
(5)) on the underside of the unit for approximately 5 sec-
onds until a display appears.
Page 10
You can now scroll through the menu and retrieve the saved
values. If over one minute elapses without a key being pressed,
the unit switches off automatically once again.
The "Counter oper. hours ", "Total operating hours", "Counter
yield", and "Total yield" data are permanently saved and
totalled. This data is not lost even if the inverter is switched off
for a long time. The daily yield, daily hours of operation and
the max. daily grid feed power are available until the following
morning and are cleared when PV generator voltage is present
again.
4.8

The serial RS232 interface

Operating data can be transmitted to a computer (e.g. note-
book) over a galvanically isolated serial interface (see fi gure
4.1 - (6)) from where it can then be individually processed
further using standard spreadsheet software.
A standard serial 1:1 interface cable is all that is required for
connecting the inverter to the computer. The cable length
should not exceed 20 metres.
The data from the inverter is sent unidirectionally as pure
ASCII text over the serial interface. The data is not checked for
errors.
The RS232 interface has the following parameters:
Baud rate Data bits Parity
9600 baud 8 None
Figure 4.6 shows, as an example, a few of lines of transmis-
sion via the RS232 interface.
The interface of the connected PC or laptop must comply with
the standard for RS232 interfaces. Some computer manufac-
turers do not fully adhere to the standard. In such cases, prob-
lems may occur during data transmission.
Data can be received with any terminal emulator, which comes
with every operating system, or with the KACO-viso visualisa-
tion tool.
NO TE
The KACO-viso visualisation software can be downloaded
from http://www.kaco-newenergy.de
Together with the Powador inverter, KACO-viso takes over the
role of a data logger. It saves the data from the inverter and
displays it in various diagram types as a daily or monthly repre-
sentation.
Operating Instructions Powador 2002 / 3002 / 4202 / 5002 / 6002_EN
Stop bits Protocol
1 None