26
Installation and Operation Manual
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 con-
denser 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, com-
pressor 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, com-
pressor 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 con-
tact; CL = the digital input is activated by closing the contact
i1F
Digital input configuration (18-20)
(dor; dEF) dor = door switch function; dEF = activation of a
defrost cycle
i2P
Second digital input polarity (18-19)
(oP; CL) oP = the digital input is activated by opening the con-
tact; CL = the digital input is activated by closing the contact
i2F
Second digital input configuration (18-19)
(EAL; bAL; PAL; dor; dEF; ES; AUS; Htr; FAn; HdF; onF)EAL
= external alarm: “EA” message is displayed; bAL = serious
alarm “CA” message is displayed; PAL = pressure switch
alarm, “CA” message is displayed; dor = door switch function;
dEF = activation of a defrost cycle; ES = energy saving; AUS
= auxiliary relay activation with oA2=AUS; Htr = type of invert
-
ing action (cooling or heating); FAn = fan; onF = to switch the
controller OFF
did
Digital input alarm delay (18-20) when i2F=EAL or
i2F=bAL
(0 to 255 min) Delay between the detection of the external
alarm condition and its signaling. When i2F= PAL, it is the
interval of time to calculate the number of pressure switch
activation
doA
Door open signaling delay
(0 to 255 min)
nPS
Number of pressure switch activation
(0 to 15) Number of activation, during the did interval, before
signaling an alarm event (i2F=PAL). If the nPS activation dur-
ing did time is reached, switch OFF and ON the instrument to
restart normal regulation.
odc
Compressor status when open door
(no; FAn; CPr; F C;) no = normal; FAn = normal; CPr = com-
pressor OFF, F_C = compressor OFF
