1592038420 XRB30-60-70-77CH EN v1.1 2021.09.15 XRB 30/38
16.7 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
- oA1=db cut out is SET
16.8 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.
16.9 ENERGY SAVING OUTPUT (oAx = HES)
When oAx=HES, the output is activated when the energy saving mode is active and vice-versa.
16.10 SECOND COMPRESSOR OUTPUT (oAx = CP2)
With oAx=CP2 the relay operates as a second regulation output. This function is available only for special
models and normally must be not selected.
17. DIGITAL INPUTS
The digital inputs are programmable by using par. i1F and i2F.
17.1 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.
17.2 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.
17.3 AUXILIARY OUTPUT (ixF=AUS)
The AUX output (if present and configured) will be enabled / disabled following the status of the relative
digital input.
17.4 ENERGY SAVING (ixF=ES)
The energy saving mode will be enabled / disabled following the status of the relative digital input.
17.5 EXTERNAL WARNING ALARM (ixF=EAL)
It is used to detect an external alarm. It does not lock the regulation.
17.6 EXTERNAL LOCK ALARM (ixF=bAL)
It is used to detect any critical external alarm. It locks immediately the regulation.
17.7 EXTERNAL PRESSURE ALARM (ixF=PAL)
It is used to detect any pressure external alarm. This signal locks the regulation after detecting nPS events in
the interval dxd.
17.8 EVAPORATOR FAN MODE (ixF=FAn)
It is used to control the evaporator fan.
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