Elcold PRO 21 Инструкция по эксплуатации онлайн [11/18] 275990
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Elcold PRO 21 Инструкция по эксплуатации онлайн [11/18] 275990

Elcold PRO 21 Инструкция по эксплуатации онлайн [11/18] 275990
User Instructions Low Temperature Freezers Model PRO/XLT
10
ALARMS
ALC
Temperature alarms configuration:
it deter-
mines if alarms are relative to set point or
referred to absolute values.
rE relative to set point; Ab absolute tem-
perature
ALL
Minimum alarm:
with ALC=rE: relative to set point, (0÷|Down
Sc.-Set|) this value is subtracted from the set
point. The alarm signal is
enabled when the probe values goes below
the “SET-ALL” value.
with ALC=Ab absolute value, minimum
alarm is enabled when the probe values
goes below the “ALL” value.
ALU
Maximum alarm:
with ALC=rE: alarm relative to set point,
(0÷|Full Sc.-Set|) Maximum alarm is en
-
abled when the probe values exceeds the
“SET+ALU” value.
with ALC=Ab: absolute alarm, (Set÷Full Sc.)
Maximum alarm is enabled when the probe
values exceeds the “ALU” value.
ALH
Differential for alarm recovery: (0,1÷Full
scale) the alarm recovers when probe value
is higher than Alarm value + ALH.
ALd
Alarm delay:(0÷999 min) time interval be-
tween the detection of an alarm condition
and alarm signalling.
dAO
Delay of alarm at start-up: (0÷23.5h) time
interval between the detection of the alarm
condition after instrument power on and
alarm signalling.
So1
Relay status with faulty probe: So1
=oFF open;
So1=on closed.
tbA
Status of alarm relay after pushing a key.
(XT111C only):
oFF = relay disabled; on = relay enabled.
AS
Alarm relay configuration (XT111C only):
cL = 4-6 terminals open with alarm; oP = 4-6
terminals closed with alarm.
PROBES AND DISPLAY
LCI
Start of scale, only with current or voltage
input: (-1999÷1999) Adjustment of read out
corresponding to 4mA or 0V input signal.
UCI
End of scale, only with current or voltage
input: (-1999÷1999) Adjustment of read out
corresponding to 20mA
or 1V or 10V input signal.
oPb
Probe calibration: (-999÷999) allows to adjust
possible offset of the probe.
rES
Decimal point ON/OFF: (rES=in OFF; rES=dE
ON; rES= cE with 2 decimal points, only for
current or voltage input) select
the resolution of the controller.
NOTE: the decimal point selection is not
available on models with thermocouple
input.
UdM
Measurement unit: it depends on models:
for temperature:°C = Celsius; °F = Fahrenheit.
with 4÷20mA, 0÷1V, 0÷10V input : 0= °C;
1= °F, 2= %RH, 3=bar, 4=PSI, 5=no measure-
ment unit.
PbC
Probe selection: it sets the kind of probe. It
depends on models
for temperature NTC/PTC: Ptc = PTC; ntc =
ntc.
for temperature standard: Pt= Pt100, J = J
thermocouple,
c = K thermocouple, S = S
thermocouple; Ptc = PTC; ntc = ntc.
with 4÷20mA, 0÷1V, 0÷10V input:
cur=4÷20mA, 0-1= 0÷1V, 10= 0÷10V.
P3F
Third wire presence for Pt100 probe: for using
2 or 3 wires Pt100 probes: no = 2 wires probe;
yES = 3 wires probe.

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