Ascon Tecnologic - Y39H Line - Operating Instructions - Pag. 5
4.3
Electrical Connections
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 con-
nection 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 instru-
ment, 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 con-
nected to the instrument must be properly protected, using
devices (ex. fuses) proportionate to the circulating currents.
It is strongly recommended that cables with proper insula-
tion, according to the working voltages and temperatures,
are to be used. Furthermore, the probe input cable must be
kept separate from line voltage wiring.
When a probe shielded cable is used, the protection shield
should be connected to ground at only one side.
Whether the instrument is a 12/24 V version (Power supply
code F/G) it is recommended to use an external TCTR trans-
former, 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.
m
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.
4.3.1 Electrical Wiring Diagram
1 2 3 4 5 6 7 8 9 101112
Intearnal
Buzzer
Digital
input
12... 24
VAC/VDC
100... 240 VAC
Power supply
Inputs
NO
NO
NC
NO
C
61810
60730
EN
EN
UL
Out1 16 (9) A 10 (4) A 10 A Res.
30 LRA
5 FLA
Out2 8 (3) A
4 (4) A
4 A Res.
Out3 5 (2) A
2 (2) A
2 A Res.
16A max. on the relays common pole (C = terminal 1);
12A max. on model with removable connectors.
Temperature
probe
(NTC)
Black
Red
Yellow
Temperature
and humidity
probe
Out2
Out1 Out3
TRH03
5 fUNCTIONS
5.1
ON/STAND-BY function
Once powered the instrument can assume 2 different conditions:
ON:
The controller uses the control functions.
STAND-BY:
The controller uses no control function and the
display is turned OFF except for the Stand-by LED.
The transition between Standby and ON status is equivalent
to power ON the instrument providing the electrical power.
In case of power failure, 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 / for at least 1 s if parameter
t.UF
=
2
;
–
Pressing the key /
Aux
for at least 1 s if parameter
t.Fb
=
2
;
–
Using the Digital Input if parameter
i.Fi
=
3
.
5.2
Measure and Display Configuration
The instrument allows to measure temperature and humidity
or even just one of the two.
If both are measured, it is possible to use the temperature
value measured by the humidity and temperature probe or
the one measured by the NTC probe.
To specify to the instrument which temperature value to use,
the
i.Sh
and
i.P2
parameters have been provided.
i.Sh
pa-
rameter allows to configure the temperature-humidity probe
input according to the following options:
1.
Activates TRH03 as humidity and temperature probe;
2.
Activates TRH03 as humidity probe only;
3.
Reserved;
4.
Reserved;
of
Not used (use this option if the only desired temperature
measurement is the one of the NTC probe connected to
the
Pr2
input).
ip2
parameter allows to configure PR2 input according to
the following options:
nt
NTC
temperature probe;
dG
Digital input;
of
Not used.
Note:
When these parameters are changed, the instrument
is initialized.
With parameter
i.uP
it is possible to select the temperature
engineering unit and the desired measure resolution
(
C0
= °C/1°;
C1
= °C/0.1°;
f0
= °F/1°;
f1
= °F/0.1°).
The instrument allows the measure calibration, which can
be used to re-calibrate the instrument according to applica-
tion needs, through the parameters
i.Ct
(temperature),
i.Ch
(humidity).
Using
i.Ft
(temperature) and
i.fh
(humidity) parameters can
be set a software filter for measuring the input values in or-
der to decrease the sensibility to rapid temperature changes
(increasing the sampling time).
More precisely, the filter parameters allow to introduce an
acquisition delay (both in increase and in decrease and
which is also valid for the adjustment) to the measurements,
limiting to the time set by the user the measure maximum
variation of 0.1 units. In this way, the maximum temperature
variation is blocked at 0.1° every
i.Ft
seconds while that of
humidity at 0.1% RH every
i.Fh
s.