
Designation: AIR CONDITIONER FOR ELECTRICAL ENCLOSURE Page 14/18
UMA-CDZ-AVC300.432-00
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.
dP3 Third probe display- no available
.dP4 Fourth probe display- no available
4.2.11 DIGITAL INPUT (ENABLED WITH P3P = N)
The free voltage digital input is programmable in different configurations by the “i1F”
parameter.
Door switch input (i1f = dor)
It signals the door status and the corresponding relay output status through the odc
parameter:
no= normal (any change);, Fan= fan OFF; CPr= Compressor OFF, F_C= Compressor and
fan OFF.
Since the door is opened, after the delay time set through parameter did, the door alarm is
enabled, the display shows the message dA and the regulation restarts is rtr = yES. The
alarm stops as soon as the external digital input is disabled again. With the door open, the
high and low temperature alarms are disabled.
Digital inputs polarity
The digital input polarity depends on the i1P parameter.
i1P=CL: the input is activated by closing the contact.
i1P=OP: the input is activated by opening the contact
4.2.12 GENERIC ALARM (i1F = EAL)
As soon as the alarm input is activated (for example enclosure temperature higher than
ALU value) the unit will wait for did time delay before signalling the EAL alarm message.
The outputs status doesn’t change. The alarm stops just after the alarm input is de-
activated.