Installation Instructions Powador 2500xi / 3600xi / 4000xi / 4500xi / 5000xi_EN
Page 17
Figure 6.8:
Connection diagram for the RS485
interface
Figure 6.8 shows a terminating resistor (Ra) with 330
Ω
on the
left inverter. For proper signal transmission, the last inverter in
a chain must have a terminating resistor.
The terminating resistors (switch “1”) in the other inverters in
the chain must be deactivated.
Switch “1” is located on the control card to the left of the
RS485 terminals and is labelled “Term.” (fi gure 6.7).
Figure 6.7 shows the factory setting with an activated termi-
nating resistor (switch “1” is “on” and switch “2” is deacti-
vated).
The control card is installed on the rear of the door of the
inverter. Switch “2” must always be off, as is shown in fi gure
6.7 (Term.).
With a bus system such as RS485, each device sharing this
bus must possess a unique address, regardless of whether it is
an inverter or a current sensing device (Powador-go). Invert-
ers may have an address range from 1 to 32. The address for
each inverter can be specifi ed using the confi guration menu
(see Operating Instructions, section 4.5, Choice of interface
and address setting).
6.7 Starting up the inverter
After completing the mechanical and electrical installation,
the inverter is put into operation as follows:
6.4 Connecting the fault signal relay
The solar inverter is equipped with a potential-free relay con-
tact in order to signal faults. This contact closes if a fault
occurs.
Maximum contact load: 30 V / 1 A.
Figure 6.7:
Connections
6.5 The S0 output connection
The inverter is equipped with an S0 pulse output. Items such
as a large display can be connected to it. The pulse rate is
adjustable (see section 6.8, Parameter programming).
6.6 The RS485 interface connection
On the inverter’s control card (rear panel of the door), there
are four terminals labelled RS485 A and B (see fi gure 6.7).
To connect several Powadors, terminal A of one Powador is
connected to terminal A of the other Powador. Terminal B is
connected in the same manner. A twisted, shielded data cable
is required for this. The connection to the Powador-proLOG is
established similarly to the interconnection of inverters. A con-
nection diagram is displayed in fi gure 6.8. The length of the
RS485 wiring should not exceed a total of 250 m.
S e c t i o n 6 ·
I n s t a l l a t i o n a n d S t a r t - u p
IMPORTANT
In the event of failure of the grid feed phase (power fail-
ure on the public grid), the relay will not trigger. If this
happens, all LEDs and the display go out. The inverter is
shut down completely.
A failure signal cannot be sent.
IMPORTANT
Ensure that the A and B wires are properly connected.
Communication is not possible if the wires are exchanged.
NOTE
The inverter can only be put into operation under daylight
conditions (i.e. at a solar generator voltage of > 300 V).
If no daylight or solar generator voltage is present, the
inverter can be activated by pressing the night start-up
key on the underside of the inverter (see Operating
Instructions). However, normal operation is not possible
in this condition. The values can only be read off the dis-
play.
Telefon
230 V~
Powador-
proLOG
A B
Powador
A B A B
Powador
A B A B
Powador
A B A B
R
a
max. 32 Powador
Содержание Powador 2500xi
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