The ON/OFF Function Parameters • 11
ALU MAXIMUM temperature alarm
(ALL to 110°C; ALL to 230°F) When this temperature is
reached the alarm is enabled, after the ALd delay time.
ALL Minimum temperature alarm
(-50°C to ALU; -58 to ALU) When this temperature is reached
the alarm is enabled, after the ALd delay time.
AFH
Differential for temperature alarm
recovery
(0.1 to 25.5°C; 1 to 45°F) Intervention differential for recovery
of temperature alarm
ALd Temperature alarm delay
(0 to 255 min) Time interval between the detection of an alarm
condition and alarm signaling.
dAo
Exclusion of temperature alarm at
start-up
(0.0 to 24h00min, res. 10min) Time interval between the
detection of the temperature alarm condition after instrument
power ON and alarm signaling.
CONDENSER TEMPERATURE ALARM
AP2
Probe selection for temperature alarm
of condenser
(nP; P1; P2; P3; P4) nP = no probe; P1 =thermostat probe; P2 =
evaporator probe; P3 =configurable probe; P4 = Probe on Hot
Key plug
AL2 Low temperature alarm of condenser
(-50 to 110°C; -58 to 230°F) When this temperature is reached
the LA2 alarm is signalled, possibly after the Ad2 delay.
Au2 High temperature alarm of condenser
(-50 to 110°C; -58 to 230°F) When this temperature is reached
the HA2 alarm is signalled, possibly after the Ad2 delay.
AH2
Differential for temperature condenser
alarm recovery
(0.1 to 25.5°C; 1 to 45°F)
Ad2 Condenser temperature alarm delay
(0 to 255 min) Time interval between the detection of the
condenser alarm condition and alarm signaling.
dA2
Condenser temperature alarm
exclusion at start up
(0.0 to 24h00min, res. 10min)
bLL
Compressor OFF with low
temperature alarm of condenser
(n; Y) n = no: compressor keeps on working; Y = yes,
compressor is switched OFF until the alarm is present, in any
case regulation restarts after AC time at minimum.
AC2
Compressor OFF with high
temperature alarm of condenser
(n; Y) n = no: compressor keeps on working; Y = yes,
compressor is switched OFF until the alarm is present, in any
case regulation restarts after AC time at minimum.
AUXILIARY RELAY
tbA
Alarm relay silencing (with oA2
=ALr)
(n; Y) n = silencing disabled: alarm relay stays ON until alarm
condition lasts; Y =silencing enabled: alarm relay is switched
OFF by pressing a key during an alarm.
oA2 Second relay configuration (1-2)
(dEF; FAn; ALr; LiG; AUS; onF; db; CP2; dEF2; HES) dEF =
defrost; FAn = do not select it; ALr = alarm; LiG = light; AUS
= Auxiliary relay; onF = always ON with instrument ON; db =
neutral zone; CP2 = do not select it; dEF2 = do not select it;
HES = night blind
AoP Alarm relay polarity
(CL; oP) it set if the alarm relay is open or closed when an alarm
occurs. CL = terminals 1-2 closed during an alarm; oP =
terminals 1-2 open during an alarm.
DIGITAL INPUTS
i1P Digital input polarity (18-20)
(oP; CL) oP = the digital input is activated by opening the
contact; CL = the digital input is activated by closing the contact
Code Parameter Function
Table 7-1 - List of Parameters
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