gasket is mounted in order to obtain the front protection degree as
declared. Avoid placing the instrument in environments with very
high humidity levels or dirt that may create condensation or
introduction of conductive substances into the instrument. Ensure
adequate ventilation to the instrument and avoid installation in
containers that house devices which may overheat or which may
cause the instrument to function at a higher temperature than the
one permitted and declared. Connect the instrument as far away as
possible from sources of electromagnetic disturbances such as
motors, power relays, relays, solenoid valves, etc.
3.3 - ELECTRICAL CONNECTION
Carry out the electrical wiring by connecting only one wire to each
terminal, according to the following diagram, checking that the
power supply is the same as that indicated on the instrument and
that the load current absorption is no higher than the maximum
electricity current permitted. As the instrument is built-in equipment
with permanent connection inside housing, it is not equipped with
either switches or internal devices to protect against overload of
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. 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
C: 16 A MAX
Out2
2
1
12
10
9
7
5 6
8
11
4
3
Pr3
Pr1
Dig.
Pr2
NO
Out1
Out3
NO
INTERNAL
BUZZER
INPUTS
Y33
(12 A MAX for extr. conn. model)
16 FLA
60730
14 A Res.
96 LRA
30 (15) A
Out1:
61810
14 (14) A
EN
EN
UL
Out2:
8 (3) A
8 (4) A
10 A Res.
Out3:
5 (1) A
2 (1) A
2 A Gen.Use
SUPPLY
N
L
NO
C
NC
NC
30 (15) A
3 4
6
5
1 2
Out3
SUPPLY
Out1
12..24
Out2
(12 A MAX for extr. conn. model)
NO
C: 16 A MAX
Out1:
NO
C
NO
Out3:
Out2:
8 (3) A
5 (1) A
EN
61810
11
8
7
9 10
12
Pr2
Dig.
Pr1
Pr3
Y33
14 (14) A 14 A Res.
2 A Gen.Use
10 A Res.
BUZZER
INTERNAL
2 (1) A
8 (4) A
96 LRA
16 FLA
INPUTS
60730
EN
UL
VAC/VDC
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", "ECONOMICAL" AND "TURBO" OPERATING
MODES
The instrument can be used to enter up to 3 different regulating set
points: Normal -
“SP”
; Economical -
“SPE”
; and “Turbo” -
“SPH”
.
Associated with each of these is the corresponding differential
(hysteresis): normal -
“r.d”
; Economical -
“r.Ed”;
and “Turbo” -
“r.Hd”
.
Switching between the various modes can be automatic or manual
"NORMAL-ECONOMICAL" MODE OPERATION
Can be used where it is necessary to switch between two different
operating temperatures (e.g. day/night or working days/holidays)
NORMAL/ECONOMICAL mode can be selected manually:
– by pressing the U key if parameter
"t.UF"
= 2
– by pressing the DOWN/AUX key if parameter
"t.Fb"
= 2
– by a digital input if parameter
“i.Fi”
= 6
NORMAL/ECONOMICAL mode can be selected automatically:
– after the door has been closed for time
“i.Et”
(switching from
Norm. to Eco)
– when the door is opened if the SPE set point is active from
parameter “i.Et” (switching from Eco to Norm.)
- after the door has been closed for time
“i.tt”
since activation of
the SPE set point from parameter “i.Et” (switching from Eco to
Norm.)
This function requires use of a digital input configured as
“i.Fi”
= 1,
2 or 3 (door open input)
If “i.Et” = oF, selection of Eco/Norm. mode via the digital input
configured as door, is deactivated.
If “i.tt” = oF, switching the mode from Eco to Normal due to time-out
is deactivated.
When in economical mode, the label
“Eco”
is displayed.
If “i.dS”= Ec, in economical mode the instrument displays “Eco” all
the time. Otherwise the label "Eco" appears approx. every 10
seconds alternating with the normal display set by the “i.dS”
parameter.
Selection of Eco mode is always also combined with the function of
turning off the Auxiliary output if used as a window light (“o.Fo”= 3).
"TURBO – NORMAL – ECONOMICAL" MODE OPERATION
"Turbo" mode can be selected manually:
– by pressing the U key if parameter
"t.UF"
= 4
– by pressing the DOWN/AUX key if parameter
"t.Fb"
= 4
– by a digital input if parameter
“i.Fi”
= 8
"Turbo" mode can be selected automatically:
- on leaving Eco mode (only if “r.HC” = C3)
- every time the instrument is switched on (only if “r.HC” = C3 and
Pr1 > SPE+r.Ed)
The instrument quits "turbo" mode automatically at the end of time
“r.tC” or manually using the programmed command (key or digital
input) and the instrument always returns to normal mode.
"Turbo" mode can be applied manually, for example when the user
wishes to lower the temperature of the products quickly after
loading the refrigerator.
However, "Turbo" mode is applied automatically to restore product
temperature at the end of economical mode.
Setting “r.HC” = C3 gives the following operating cycle:
ASCON TECNOLOGIC - Y33
- OPERATING INSTRUCTIONS - Vr. 01 - 04/16 - ISTR-MY33-ENG01 - PAG. 4