Interfaces; (A) Connection For Fault Signal Relay; (B) Connecting The S0 Output; (C) The Rs485 Interface Connection - Kaco Powador 2002 Operating Instructions Manual

Secti o n 5 · Insta ll ati on and S ta rt-U p

5.5 Interfaces

All interfaces are connected on the communication circuit
board. The circuit board is found directly underneath the
terminal block of the cable connection.
Switch
Figure 5.17: Communication circuit board
S0 Error
Figure 5.18: Interface terminals

(A) Connection for fault signal relay

The inverter is equipped with a potential-free relay contact as
standard.
Fault signal relay
In fault signal relay mode, the potential-free contact is discon-
nected as soon as a fault occurs during operation.
The contact is designed as a normally open contact and
marked as "ERR" on the circuit board.
Maximum contact load
• DC: 30 V / 3 A
• AC: 250 V / 1.5 A
Installation Instructions Powador 2002 / 3002 / 4202 / 5002 / 6002_EN
RS 485
I MP OR TA N T
In the event of failure of the grid-feed phase (power failure
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 fault signal cannot be sent.

(B) Connecting the S0 output

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 5.7, "Parameter programming").

(C) The RS485 interface connection

The connection terminal (fi gure 5.18) is found on the Powador
communication circuit board. To connect several Powador
units, 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, such as an ISDN cable,
is required for this. The connection to the Powador-proLOG is
established similarly to the interconnection of inverters.
A connection diagram is displayed in fi gure 5.19. The total
length of the RS485 wiring should not exceed 250 m.
Powador Powador
A B A B A B A B
R
a
max. 32 Powador
Figure 5.19: Connection diagram for the
RS485 interface
In fi gure 5.20, a terminating resistor (R
connected to the left inverter. For proper signal transmission,
the last unit in a chain must have a terminating resistor.
The terminating resistors in the other inverters in the chain
must be deactivated (set to "OFF"). In the last unit in the
chain, switch "1" is set to "ON" and switch "2" is set to
"OFF". The switch is found on the communication circuit board
underneath the terminal block (fi gure 5.17).
With a bus system such as RS485, each unit sharing this bus
must possess a unique address, regardless of whether it is an
inverter or a current sensing unit. For inverters, the address
range can be selected between 1 and 32. You can defi ne the
address for each inverter using the confi guration menu (see
Operating Instructions).
I M P OR TA N T
Ensure that the A and B wires are properly connected.
Communication is not possible if the wires are reversed.
Telephone
Powador Powador-
connection
proLOG
230 V
A B A B A B
) with 330 Ω is
a
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