Designation: AIR CONDITIONER FOR ELECTRICAL ENCLOSURE
Page 13/20
UMA-CDZ-IP-ACIRM100-00
4.2.8 HOW TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the
▲
+
▼
keys, till the
Pon
message will be
displayed.
4.2.9 THE ON/OFF FUNCTION
With
onF = oFF
, pushing the
ON/OFF
key, the instrument is switched off. The
OFF
message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the
ON/OFF
key.
WARNING:
Loads connected to the normally closed contacts of the relays are always
supplied and under voltage, even if the instrument is in standby mode.
4.2.10 PARAMETERS
Regulation
Hy Differentia
l: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point.
Compressor
Cut IN is Set Point + differential (Hy). Compressor Cut OUT is when the
temperature reaches the set point.
Ot
Thermostat probe calibration
: (-12.0÷12.0°C; -120÷120°F) allows to adjust
possible offset of the thermostat probe.
AC
Anti-short cycle delay
: (0÷50 min) minimum interval between the compressor stop
and the following restart.
CH
Type of action
: CL = cooling; Ht = heating.
rES
Resolution (for °C):
(in = 1°C; dE = 0.1 °C) allows decimal point display.
dLy Display delay: (0 ÷20.0m; risul. 10s) when the temperature increases, the
display is updated of 1 °C/1°F after this time.
IdF
Interval between defrost cycles
: (0÷120h) Determines the time interval between
the beginning of two defrost cycles.
MdF (Maximum) length for defrost
: (0÷255min) (0=no defrost) When P2P = n, (not
evaporator probe: timed defrost) it sets the defrost duration, when P2P = y (defrost
end based on temperature) it sets the maximum length for defrost.
ALU
MAXIMUM temperature alarm
: (SET÷110°C; SET÷230°F) when this temperature
is reached the alarm is enabled, after the “ALd” delay time.
ALL
Minimum temperature alarm
: (-50.0 ÷ SET°C; -58÷230°F when this temperature is
reached the alarm is enabled, after the “ALd” delay time.
i1P
Digital input polarity
: oP: the digital input is activated by opening the contact; CL:
the digital input is activated by closing the contact.
i1F
Digital input configuration
: 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; AUS =to switch on the second relay if oA1 = AUS; Htr = kind of action
inversion (cooling –heating); FAn = not set it; ES = Energy saving.
did
(0 ÷ 255 min) with i1F= EAL or i1F = bAL digital input alarm delay: delay between
the
detection of the external alarm condition and its signalling.
with i1F= dor: door open signalling delay
with i1F = PAL: time for pressure switch function: time interval to calculate the
number of the pressure switch activation.
PbC
Type of probe
: it allows to set the kind of probe used by the instrument: PbC =
PBC probe, ntc = NTC probe.
