Elesta RTM508B Mode D'emploi page 16

Checking the signal strength
The device constantly indicates the strength of the radio
signal received for each of the eight channels.
This makes the whole system simpler to install and adjust
and moreover allows the user to carry out an instant check on
the quality of the radio communication over each channel.
The signal strength is indicated by each of the 8 output status
LEDs. They may light up green, yellow or red depending on
the quality of the radio signal received:
Green: The signal received is good or excellent, radio
communication is reliable.
Yellow: The signal received is sufficient.
Red:
The signal received is weak, communication is not
reliable.
The status of the output of an actuator that is currently
switched off is signalled with the corresponding LED faintly
lit rather than off, so that the quality of the radio signal can
always be seen.
The relay module indicates two types of signal quality via the
LED of each channel based on:
- An immediate analysis of the last command received
- A long-term analysis of the commands received
The LED will normally indicate the "long-term" signal quality,
based on the quantity of correct commands received over
the previous 90 minutes of operation. This data is stored in
a non-volatile memory, so that it will be possible to check
the status of each channel even after a mains power cut
or blackout.
At the moment a channel receives a radio command, the
corresponding output LED goes off for a brief instant and
then immediately back on again. For a brief instant the LED
will provide an immediate indication of the last command
received, proportional to the strength of the radio signal
received.
If a transmitter is in the "test" mode, the corresponding LED
on the relay module will always provide only an "immediate"
indication of signal strength so that you can instantly assess
whether to go ahead with mechanical installation.
If the signal strength is not acceptable, try changing the
position of the active antenna or, if necessary, of the
transmitter.
Remember that both the transmitter and receiver must be
installed away from metal objects or metal-reinforced walls
that could weaken the radio signals.
NOTE
The output LED may blink to signal a system fault. In this
case the colour of the LED has a different meaning, see the
paragraph on "Actuator output status LEDs".
Configuring NO/NC actuators
The relay module is set in the factory to control normally
closed (NC) actuators but each channel can be individually
configured to control a normally open actuator (NO).
- To enter the configuration mode, press the association
button "A" and channel 1 button "CH1" together for three
seconds.
- The LED of each channel will start blinking. The meaning is
as follows:
blinking green = NC actuator
blinking red = NO actuator
- Pressing the button corresponding to a channel will change
the NO-NC setting and the LED will indicate the new
status.
- Press the association button "A" to terminate the
configuration procedure. In any event, after 20 sec
of inactivity the module will automatically exit the
configuration mode, saving any changes made.
Configuring the periodic activation of actuators
The relay module is set in the factory to carry out a function
of periodically switching on the actuators: if the actuator
outputs remain off for long periods, they will automatically
be switched on for at least 5 minutes every 2 days to prevent
damage from being caused by inactivity.
If this function is not required, it can be individually disabled
for each channel.
- To enter the configuration mode, press the association
button "A" and channel 2 button "CH2" together for
three seconds.
- The LED of each channel will start blinking. The meaning is
as follows:
blinking green: periodic activation of actuators enabled
blinking red: periodic activation of actuators disabled
- Pressing the button corresponding to a channel will change
the setting and the LED will indicate the new status.
- Press the association button "A" to terminate the
configuration procedure. In any event, after 20 sec
of inactivity the module will automatically exit the
configuration mode, saving any changes made.
OPTION DIP-SWITCH
DIP-SWITCH 1: Safety antifreeze option
 In the absence of radio communication, it switches on
the actuator every hour for 18 minutes in the antifreeze
mode.
 In the absence of radio communication, it switches off
the actuator completely.
The "safety antifreeze" option is useful in cases where not
providing any thermal energy to the system could cause the
pipes to break.
In the event that a problem occurs in the radio communication
with one or more outputs, if the safety antifreeze option
has been enabled the outputs in question will be switched
on automatically every hour for 18 minutes, supplying 30%
power to the system.
DIP-SWITCH 2: Periodic activation of auxiliary output
 If the auxiliary output always remains off, it is switched
on for 1 minute every 2 days to prevent the pump from
being damaged due to inactivity.
 Function deactivated.
The "periodic activation of auxiliary output" option is useful
if the system includes a circulation pump that could undergo
damage if left inactive for long periods of time.
When this option is enabled, the auxiliary output will be
switched on for 1 minute every 2 days.
The output will be switched on at the same time as the
actuators if the periodic activation function is also enabled
for the actuator outputs.
DIP-SWITCH 3: Share auxiliary output
 The auxiliary output will be switched on/off according
to the status of the channels of all modules connected
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