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9
Digital Inputs
The XM600 series of controllers can support up to
three (3) configurable digital inputs that are free of
voltage contact (depending on the models). They are
configurable via i#F parameter.
9.1. Generic Alarm (EAL)
As soon as the digital input is activated, the controller
will wait for the did time delay before signaling the
EAL alarm message. The outputs status don't change.
The alarm will stop as soon as the digital input is
deactivated.
9.2. Serious Alarm Mode
(bAL)
When the digital input is activated, the controller will
wait for the did time delay before signaling the bAL
alarm message. The relay outputs are switched OFF.
The alarm will stop as soon as the digital input is
deactivated.
9.3. Pressure Switch (PAL)
If the pressure switch has reached the number of
activation of the nPS parameter during the interval
time set by the d#d parameter, the CA pressure alarm
message will be displayed. The compressor and the
regulation are stopped. When the digital input is ON
the compressor is always OFF. If the nPS activation
in the d#d time is reached, switch the controller OFF
and ON to restart normal regulation.
20 • XM679K I&O Manual
1. The terminals [30] to
[33] are free of voltage.
2. Use shielded cable for
distances higher than
one meter.
For each input, the following
has to be configured: the
polarity of activation, the
function of the input, and the
delay of signaling. The
parameters to perform this
configuration are i1P, i1F,
i1d respectively for polarity,
functioning, and delay.
9.4. Door Switch Input (dor)
This input signals the door status and the
corresponding relay output status through the odc
parameter: no = normal (any change); Fan = Fan
OFF; CPr = Compressor OFF; F_C = Compressor
and fan OFF. Since the door is opened, after the delay
time set through parameter d#d, the door alarm is
enabled, the display shows the message dA, and the
regulation restarts after rrd time. The alarm stops as
soon as the external digital input is disabled again.
With the door open, the high and low temperature
alarms are disabled.
9.5. Start Defrost (dEF)
A defrost will start if the right conditions exist. After
the defrost is finished, normal regulation will restart
only if the digital input is disabled; otherwise, the
controller will wait until the MdF safety time is
expired.
9.6. Relay Aux Actuation
(AUS)
This function enables the auxiliary relay to be turned
ON and OFF by using the digital input as external
switch.
9.7. Relay Light Actuation
(LiG)
This function enables the light relay to be turned ON
and OFF by using the digital input as external switch.
9.8. Remote ON/OFF (OnF)
This function switches the controller ON and OFF.
9.9. Kind of Action (Htr)
This function enables the change in the kind of
regulation: from cooling to heating and vice versa.
026-1218 Rev 4
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