Kaco Powador 2002 Operating Instructions Manual page 10

Description
3.2.6 Mechanical components
3.2.6.1 DC isolator switch
EN EN
There is one DC isolator switch in the inverter housing. The DC isolator switch is used to disconnect the inverter from
the PV generator in order to carry out service.
Figure 4: DC isolator switch
3.2.6.2 Night start button
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. feed-in power) after the
display switches off , the unit can also be activated during the night by pressing the night start-up button on the
underside of the inverter.
Figure 5: Night-start button on the inverter
3.2.7 Interfaces
The inverter has the following interfaces for communication and remote monitoring:
• RS232 port
• RS485 interface
• S0 interface
You confi gure the interfaces in the Settings mode (see section 8.3 on page 33).
3.2.7.1 RS232 port
Use this monitoring option if you wish to manage system operating data directly on a computer. The data can be
processed with standard spreadsheet programs.
The inverter and computer are connected with a serial 1:1 interface cable.
The cable length should not exceed 20 metres.
The data from the inverter is sent unidirectionally as pure ASCII text via the serial interface. The data is not checked
for errors.
The RS232 interface has the following parameters:
Baud rate
9600 baud
The table below shows an example of a few lines of data transmitted over the RS232 interface.
Spalte 1
00.00.0000 00:05:30
00.00.0000 00:05:40
00.00.0000 00:05:50
Table 1: Excerpt from the RS232 interface transmission log
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Data bits Parity Stop bits
8 None 1
2 3 4 5
3 363.8 0.37
3 366.0 0.39
3 359.5 0.41
Disconnecting the inverter from the PV generator
 Switch the DC isolator switches from 1 (ON) to 0
(OFF).
Connecting the inverter to the PV generator
 Switch the DC isolator switches from 0 (OFF) to 1
(ON).
Protocol
None
6 7 8 9
134 226.1 0.53 103
142 226.1 0.53 112
147 226.1 0.53 116
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Operating Instructions for Powador 2002-6002_EN