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ASCON TECNOLOGIC - Y39E
- OPERATING INSTRUCTIONS - Vr. Mondial Group - 10/10 - ISTR-MY39EENGmondial - PAG. 4
current: the installation will include an overload protection and a
two-phase circuit-breaker, placed as near as possible to the
instrument, and located in a position that can easily be reached by
the user and marked as instrument disconnecting device which
interrupts the power supply to the equipment. It is also
recommended that the supply of all the electrical circuits connected
to the instrument must be protect properly, using devices (ex.
fuses) proportionate to the circulating currents. It is strongly
recommended that cables with proper insulation, according to the
working voltages and temperatures, be used. Furthermore, the
input cable of the probe has to be kept separate from line voltage
wiring. If the input cable of the probe is screened, it has to be
connected to the ground with only one side. Whether the
instrument is F o G (12 / 24 V) supply version it’s recommended to
use an external transformer TCTR, or with equivalent features
(Class II insulation) , and to use only one transformer for each
instrument because there is no insulation between supply and
input. We recommend that a check should be made that the
parameters are those desired and that the application functions
correctly before connecting the outputs to the actuators so as to
avoid malfunctioning that may cause irregularities in the plant that
could cause damage to people, things or animals.
3.4 - ELECTRICAL WIRING DIAGRAM
SUPPLY
12...24
VAC/VDC
Out3
NO
NO
1
C
3
2
4
NC
Out2
Out1
Dig.
Pr2
11
INPUTS
8
VAC
100...240
6
5
NO
7
Pr1
9 10
INTERNAL
BUZZER
12
Y39E
C: 16A MAX
OUT1: 16A-AC1 (6A-AC3) / 250 VAC;
OUT2: 8A-AC1 (3A-AC3) / 250 VAC;
OUT3: 5A-AC1 (2A-AC3) / 250 VAC;
1/8HP 250/125 VAC
1HP 250VAC, 1/2HP 125VAC
1/2HP 250VAC,1/3HP 125VAC
4 - FUNCTIONS
4.1 - ON / STAND-BY
FUNCTION
The instrument, once powered up, can assume 2 different
conditions:
- ON : means that the controller uses the control functions.
- STAND-BY : means that the controller does not use any control
function and the display is turned off except for the Stand-by led.
If there is no power, and then power returns, the system always
sets itself in the condition it was in before the black-out.
The ON/Stand-by function can be selected:
- Pressing the key U for at least 1 sec. if the parameter
"t.UF"
= 3.
-Pressing the key DOWN/AUX for at least 1 sec. if the parameter
"t.Fb"
= 3.
- using the digital input if the parameter
“i.Fi”
= 7
4.2 - NORMAL MODE AND ECONOMIC MODE
The instrument allows up to 2 different Set points to be pre-set:
“SP”
(normal)
and
“SPE”
(Economic) with two different hysteresis
(differential)
“r.d”
(normal) and
“r.Ed”.
This function can be used if it is necessary to switch two different
function temperatures (e.g. day/night or working days/ holidays)
NORMAL / ECONOMIC mode can be selected manually:
- Using the key U if the parameter
"t.UF"
= 2.
- Using the key DOWN/AUX if the parameter
"t.Fb"
= 2.
- Using the digital input if the parameter.
“i.Fi”
= 6
- Using the parameter
“t.SA”
(0 = norm.; 1 = Eco)
NORMAL / ECONOMIC mode can be selected automatically:
- After Time
"i.Et"
closing the door (switching from Norm. to Eco)
- At the door opening if it's active Economic mode switched by time
“i.Et” (switching from Eco to Norm.)
For this function, use the digital input configured as "i.Fi" = 1, 2 or
3.
If "i.Et" = oF the selection mode Eco / Norm. through the digital
input is disabled.
The economic mode activated is indicated by the label
"Eco".
If "i.dS" = Ec the display in economy mode show always "Eco"
otherwise the label "Eco" appears every 10 seconds.
The selection of the Economic mode it is also combined to the
function of switch off Auxiliary output if used as light ("o.Fo" = 3)
The Set point "SP" can be set with a value between the
programmed value in parameter.
“S.LS”
and the programmed
value in parameter
“S.HS”.
The Set point "SPE" can be set with a value between the
programmed value in parameter.
“SP”
and the programmed value
in parameter
“S.HS”.
Note:
in the examples that follow, the Set point is generally
indicated as "SP" and the histeresis as “r.d”, how when operating
the instrument will work according to the Set point and histeresis
selected as actives.
4.3 - MEASURING AND VISUALIZATION
Via the parameter
“i.SE”
it is possible to select the type of probes
that one wishes to use and which can be: thermistores PTC
KTY81-121 (
Pt
) or NTC 103AT-2 (
nt
).
Via the parameter
“i.uP”,
it is possible to select the temperature
unit of measurement the desired measurement resolution (
C0
=°C /
1° ;
C1
=°C / 0.1° ;
F0
= °F / 1°;
F1
= °F / 0.1°).
The instrument allows the measuring to be calibrated, that can be
used for re-calibrating the instrument according to application
needs, through the parameters
“i.C1”
(for the input Pr1) and
“i.C2”
(for the input Pr2).
The functions carried out by Pr2 probe is defined by the parameter
“i.P2”
.
This parameter can be configured for the following functions:
= EP
- Evaporator probe: used to managing the defrost and the
evaporator fans (see relative functions)
= Au
- Auxiliary probe
= dG
- Digital input
If probe Pr2 is not used, set the relative parameter
“i.P2”
= oF.
Using the parameter
“i.Ft”,
it is possible to set the time constant
for the software filter for measuring the input values to be able to
reduce the sensitivity to measurement disturbances (increasing the
time).
Through the parameter
“i.dS”,
it is possible to fix the normal
visualisation on the display that can be the measurement of the
probe Pr1 (P1), the measurement of the probe Pr2 (P2), the active
set point value (SP), the label “Eco” when the instrument is in Eco
mode (Ec) or it can have the numerical display switched off (oF).
Through the parameter
“i.CU”,
it is possible to program an
measure offset that will be applied to the temperature show on the
display (only if i.dS”= P1, P2, Ec).
All the controls will always happen in operation of the measure
corrected only by the calibration parameters (“i.C1”, “i.C2”).
The normal visualisation on the display is established by par.
“i.dS”, but it is possible to visualise all the variables and the highest
and lowest Pr1 peak measurement values in rotation by quickly
pressing and releasing key U.
The display will alternately show the code that identifies the
variable and its value.
The variable are:
“Pr1”
- Pr1 temperature
“Pr2”
- Pr2 temperature ( on/oF state if is progr. as digital input )
“
Lt”
and the lowest Pr1 peak temperature
“Ht
” and the highest Pr1 peak temperature
When the instrument is switched off, peak values are always re-set.
However, it is also possible to reset these values if the instrument
is switched on by using the DOWN key hold for 3 sec. during peak
visualization.
The display will show “---” and peak memory will be reset.
The exit of this visualisation mode occurs automatically 15 seconds
after the last pressing on the key U.