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RX10 Ten-Zone Receiver Decoder
Note that the relay contacts will be open until the first test call is received when they will close for the set
time. Because the test call interval is shorter than the set time, the timer is reset with every successfully
received call, so the relay contacts remain closed until a call is missed when they will open until a call is
successfully received.
Because both N/O and N/C terminals are available for each relay, this can cause confusion when deciding
on whether to select the “Close” and “Open” functions. To avoid confusion, the “Close” function for each
relay can be best described as “when the relay is energized”, and the “Open” function as “when the relay is
de-energized.”
For example, if the N/C terminal configuration is used, when the “Close” command RIC is transmitted, the
relay will energize and the contacts will go open. After this, if the “Open” command RIC is sent, the relay
will de-energize and the contacts will close. Similarly, if the N/O terminal configuration is used, when the
“Close” command RIC is transmitted, the relay will energize and the contacts will close. After this, if the
“Open” command RIC is sent, the relay will de-energize and the contacts will open.
