ZIEHL-ABEGG UNIcon CTG-150AVC, Operating Instructions Manual, Page: 9 / 36

5.6 Relay outputs “ K1 ”
The relay output “ K1 ” can have different functions assigned to it, see IO SETUP. Max.
contact rating see technical data and connection diagram.
Function fault indication (factory setting) for “ K1 ” :
•
For operation the relay is energized, connections “ 13 ” and “ 14 ” are bridged. For fault
the relay is de-energized.
•
When switching off via enable (see IO SETUP/Digital inputs "DI"), the relay remains
energized.
5.7 RS-485 interface for MODBUS
The device comes equipped with a RS-485 interface for networking via MODBUS.
Conntection at:
“ A (D+) ” , “ B (D-) ” and “ GND ” .
11.03.2014
v_am_modbus_connect.vsd
ID1 GND
A
(D+)
B
(D-)
ID2 GND
A
(D+)
B
(D-)
B
(D-)
ID1 GND
A
(D+)
B
(D-)
ID2 GND
A
(D+)
MODBUS
(RS-485)
MODBUS
(RS-485)
A
d
d
re
s
s
in
g
A
d
d
re
s
s
in
g
MODBUS
(RS-485)
MODBUS
(RS-485)
A
d
d
re
s
s
in
g
A
d
d
re
s
s
in
g
The connections for MODBUS “ A (D+) ” , “ B (D-) ” are available double on the module and are
connected with each other internally.
Information
•
You must ensure correct connection; i.e. “ A (D+) ” must also be connected on the
following devices to “ A (D+) ” . The same applies to “ B (D-) ” .
•
In addition, a "GND" connection must be established, as dissimilar potential (over 10
V!) will lead to the destruction of the RS-485 interface (e.g. lightning).
•
Except the data link “ A (D+) ” , “ B (D-) ” and “ GND ” (for automatic addressing additional
“ ID1 ” - “ ID2 ” see following chapter) no further cable cores of the data line may be used.
•
Pay attention to suf fi cient distance from powerlines and motor wires (min. 20 cm).
•
A maximum of 64 participants can be directly connected to one another, and another
64 participants via a repeater.
Operating Instructions UNIcon CTG-150AVC Electrical installation
L-BAL-E287-GB 2015 Index 004 Part.-No.
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