Zanotti uniblock SB-SP O Instructions page 12

A4
: DIGITAL INPUT 1
It defines the function of the digital input 1
A5
: NUMBER 2 DIGITAL INPUT CONFIGURATION
Establishes the meaning of the number 2 digital input, where present
A6
: COMPRESSOR FAILURE DUE TO AN EXTERNAL ALARM
If an external alarm is active, the compressor remains active for a period of time equal to A6. The
compressor's off-time is a fixed 15 minute period (the compressor's arrow flashes intermittently).
Fans are programmed according to the relative parameters.
When A6 = 0, the compressor is always off, when A6 = 100 the compressor is always ON.
A7
: DELAY TIME FOR ENTRY IN A4 OR A5
This establishes the delay between the activation of the alarm signal in a digital input and the
activation of the measures envisaged in case an alarm with delaying device is selected.
The first time the alarm occurs, delay A7 is activated. At the end of the timed period, if the alarm is
still active, this is indicated. Otherwise, the machine starts again from where it left off.
FANS
F0
: FAN MANAGEMENT
0 = fans always ON except for parameters F2, F3, Fd
1 = fans controlled by a specific fan regulator and by parameter Fd (post dripping stop)
2 = fans controlled by the overall fan regulator (and by parameter Fd)
The fans are always OFF during the dripping phase.
F1
: FAN SWITCH OFF TEMPERATURE
Select the appropriate fan regulator F0 = 1.
The fans will switch off when the temperature detected by the defrosting sensor exceeds the
preset temperature minus the value of F1.
If the device detects an error in at least one of the two probes the fans regulator is disabled and
the machine behaves as if F0 = 0
If the absolute fans regulator is selected, then F0 = 2.
Fans are turned on only when the evaporator temperature is less than SetPoint + F1.
A0 is the differential used in this fans regulation.
If the device detects an error in the defrost probe, fans behave as if F0=0
F2
: OFF WHEN COMPRESSOR STOPPED
It is possible to force fans OFF when the compressor is stopped.
F3
: FANS DURING DEFROST
The parameter is indipendent from the others ; it defines the status of fans during defrost.
F3 = 1 Off in defrost
F3 = 0 On in defrost
Fd
STOP AFTER DRIPPING
After the dripping time it is possible to stop fans for some time.
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