USER'S GUIDE____________________________________________________________________
52 __________________________________________________________________ M210762EN-D
Selecting Relay Activation State
The middlemost
C
terminal and either one of the terminals
NO/NC
shall
be connected. The polarity can be freely selected.
NO
Normally open
C
Common relay
NC
Normally closed
Relay NOT activated:
C
and
NC
outputs are closed,
NO
is open
Relay IS activated:
C
and
NO
outputs are closed,
NC
is open.
Connect the power and close the cover. For instructions on how to
operate the relay (for example, select quantity for the relay output and set
the relay setpoints) see section Operation of Relays on page 112.
0605-032
Figure 32
Relay Module
Numbers refer to Figure 32 above:
1
=
Indication led for the relay 1 or 3
2
=
Relay test buttons
3
=
Flat cable pins
4
=
Indication led for relay 2 or 4
WARNING
The relay module may contain dangerous voltages even if the transmitter
power has been disconnected. Before working on the relay module you
must switch off
both
the transmitter
and
the voltage connected to the
relay terminals.
WARNING
Do not connect the mains power to relay unit without grounding the
transmitter.