1592040000 XR20-30-60-70T EN v1.5 2021.06.22 XR20-30-60-70T 35/41
12.6.3 GENERAL NOTES
if oAx=AUS and ArP=nP (no probe for auxiliary digital output) the AUX output can be managed:
• by digital input if i1F=AUS or i2F=AUS
• by auxiliary button (if set as AUS)
• by serial command (Modbus protocol)
• by fixed interval of time if Ato>0 and AtF>0 (if Ato=0 or AtF=0 the auxiliary output is disabled)
12.7 DEAD BAND REGULATION (oAx = db)
With oAx=db the output can be used to control a heater element, for example. It is used to implement a
dead band regulation. If so:
• oAx=db cut in is SET-HY
• oAx=db cut out is SET
12.8 ON/OFF OUTPUT (oAx = onF)
When oAx=onF, the output is activated when the controller is switched on and deactivated when the
controller is switched off.
12.9 ENERGY SAVING OUTPUT (oAx = HES)
When oAx=HES, the output is activated when the energy saving mode is active and vice-versa.
12.10 CONDENSER FAN OUTPUT (oAx = Cnd)
With oAx=Cnd the relay operates as a condenser fan output.
12.11 SECOND COMPRESSOR OUTPUT (oAx = CP2)
With oAx=CP2 the relay operates as a second regulation output.
12.12 SECOND DEFROST OUTPUT (oAx = dF2)
With oAx=dF2 the relay operates as second defrost output. This function is available only for special models
and normally must be not selected.
12.13 HEATER OUTPUT (oAx = HEt)
With oAx=HEt the relay operates as a heater output. In this case, it will be used during and after any defrost
cycle. The par. Hon defines the time the relative output will stay active after the end of a defrost operation.
13. DIGITAL INPUTS
The digital inputs are programmable by using par. i1F and i2F.
13.1 DOOR SWITCH (ixF=dor)
It signals the door status. Some relay outputs can be toggled depending on the odC parameter:
• odC = no no change
• odC = FAn evaporator fan will be switched off
• odC = CPr compressor will be switched off
• odC = F-C both compressor and evaporator fan will be switched off
Since the door is opened:
• the door alarm is enabled
• the display shows the message “dA”
• the regulation restarts only if rrd = Y.
The alarm stops as soon as the external digital input is disabled again. During open door conditions, the high
and low temperature alarms are disabled.
13.2 START DEFROST (ixF=dEF)
It starts a defrost if all conditions are fulfilled (temperature, delays, etc.). After finishing a defrost, the normal
regulation will restart only if the digital input is disabled, otherwise the instrument will wait until the MdF
safety time is expired.
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