
User's Guide ______________________________________________________________________
48 __________________________________________________________________ M210796EN-A
Selecting the Activation State of the Relay
The middlemost C terminal and either one of the terminals NO/NC
must 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.
NOTE
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 100.
0503-037
Figure 25 Relay Module
Numbers refer to Figure 25 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 opening the
transmitter you must switch off both the transmitter and the voltage
connected to the relay terminals.
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