Ascon Tecnologic - e33B - 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 current overloads: the
installation will include an overload protection and a two-
phase circuit-breaker, placed as near as possible to the in-
strument 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 cir-
cuits connected to the instrument must be protect properly, us-
ing 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 probes has to be kept sepa-
rate from line voltage wiring. If some cables used for the wiring
should be shielded, it is recommended to c
onnect the shield
to ground at one side only
.
Whether the instrument is a 12 V version (Power supply code
F) it is recommended to use an external TCTR transformer, 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
D
D
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 dam-
age to people, things or animals.
4.3.1
Electrical wiring diagram
Internal
Buzzer
Pr1
Pr3
Pr2
Digital
Input
Power
supply
INPUTS
NO
NO
NO
NC
C
Out2
Out1
Out3
OUTPUTS
(12 A max. for removable connectors models)
16 FLA
96 LRA
15 A Res.
EN
30 (15) A
61810
Out 1 (H):
15 (15) A
5 FLA
30 LRA
12 A Res.
16 (9) A
Out 1 (R):
10 (4) A
10 A Res.
8 (3) A
Out 2:
8 (4) A
2 A Gen. Use
5 (1) A
Out 3:
2 (1) A
60730
EN
UL
5. FUNCTIONS
5.1
ON/Stand-by function
Once powered the instrument can assume 2 different conditions:
ON
: Means that the controller uses the control functions.
STAND-BY:
Means that the controller uses no control function and
the display is turned off except for the Stand-by LED.
The transition between Standby and ON 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:
–
With the key
/ pressed for 1 s if
tUF
=
3
;
–
Using the Digital Input if parameter
iFi
=
7
;
5.2
Normal, Economic and Turbo operation
The instrument allows to pre-set 5 different control Set
points, 3 of which (
SP1
,
SP2
,
SP3
) are
Normal
, one
SPE
is
Economic
(or Eco) and one
SPH
Turbo
.
Associated with each Setpoint there is the relative differential
(hysteresis):
Normal
-
rd
,
Eco
-
rEd
and
Turbo
-
rHe
.
As already explained at paragraph “
2.1 - Quick setting of the
normal Set Point
” the “
Normal
” operating set point can be
only
1
(
Sp1
if
tEd
=
1
) or selectable between 3 preset values (
SP1
,
SP2
,
SP3
if
tEd
=
2
).
Note:
In the following examples the Set point is generally
indicated as
SP
, however the instrument
operates on
the basis of the active Set Point
.
5.2.1
Normal/Eco operation selection
This function can be used when you need to switch two func-
tional temperatures (eg. Day/Night or week-day/week-end).
Pr1
Temp.
SPE
SP
Door
rd
rEd
iEt
time
Normal
DAY (Shop open)
DAY (Shop open)
NIGHT (Shop closed)
Normal
eco
Out
L1
ON
OFF
ON
Example of automatic
ECO
/
Normal
mode activation. during
the business hours the door is opened frequently and the
controller remains in
Normal
mode. After the
iEt
time has
elapsed since the door has not been opened anymore, the
controller switches to
ECO
mode. As soon as the door is
opened again, the controller returns to
Normal
mode.
The Normal/Eco operation can be selected in manual mode:
–
Using the
/ key if parameter
tUF
=
2
;
–
Using the Digital Input if parameter
iFi
=
6
.
The Normal/Eco operation can be selected in automatic mode:
–
Elapsed the
iEt
time after the door has been closed
(Normal/Eco switching).
–
At door opening if the
SPE
Setpoint is activated by
iEt
parameter (Eco/Normal switching).
–
Elapsed the
itt
time after the door has been closed and
from the activation of
SPE
Setpoint (Eco mode) by
iEt
parameter (Eco/Normal switching).
To use this function, it is necessary to set the Digital Input as:
iFi
=
1
,
2
or
3
(door open Input).
