WIRING OF ANALOG INPUTS - USED AS BINARY OR TRISTATE
NOTE:
The name, sensor characteristic and alarm types for each analog input have to be assigned during the
configuration.
Relay Card CT2-REL2 plug-in module
As a default, the unit is supplied with the plug-in module Relay Card CT2-REL2 plugged in the unit.
The module provides:
2 relay outputs allowing voltage-free output contacts
5 A current measurement input
50 mA current measurement input
It is possible to operate the unit also without the Relay Card CT2-REL2 if none of the above
mentioned functions is requested for the application. In that case, it can be removed and the plug-in
slot can be used for inserting another plug-in expansion module, e.g. IC-NT CT-BIO7 to expand the
configurability of binary inputs/outputs.
Relay outputs
The relays on the Relay Card CT2-REL2 module provide a set of 2 NO contacts with possibility of
configuration of any logical binary output. By default, the functions !Comm Trp and !Bak Comm Trp
are configured to those outputs. To change the configuration of the relay outputs function, use the
configuration tool in LiteEdit PC software.
Current inputs
The module Relay Card CT2-REL2 provides two current inputs for purpose of the Earth Fault Current
and Ground Surge Current evaluation. When wiring the current inputs, please make sure that the
wires are connected to the correct current measurement input to prevent damage of the 50 mA
input by excessive current!
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