Ascon Tecnologic - e34B - OPERATING INSTRUCTIONS - PAG. 5
4. INSTALLATION WARNINGS
4.1
Mechanical mounting
The instrument, in case 78 x 35 mm, is designed for flush-
in panel mounting. Make a 71 x 29 mm hole and insert the
instrument, fixing it with the provided special brackets.
In order to obtain the declared front protection degree, mount
the gasket and use the screw type bracket (both optional).
Avoid placing the instrument in environments with very high
humidity levels or dirt that may create condensation or intro-
duction 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 re-
lays, relays, solenoid valves, etc..
4.2
Dimensions
[mm]
4.2.1
Mechanical dimensions
e34B
P
U
trb
35
28
12.2
14.5
8
6
64
78
4.2.2
Panel cut-out
29
+0.6
71
+0.6
mm
RECOMMENDED
PANEL CUTOUT
min.
12 mm
min. 15 mm
4.2.3
Mounting brackets and gasket
P
anel + Gask
et max.
12 mm (#1)
max.
29 mm (#2)
“Butterfly” type
brackets (#1)
Screw type
bracket (#2)
34
43
86
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
connect 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
C
Out1
NO NO
Out2
NO
Out4
NO
Out3
OUTPUTS
(12 A max. for removable connectors models)
EN
61810
5 FLA
30 LRA
10 A Res.
16 (9) A
Out 1 (R):
10 (4) A
2 A Gen. Use
5 (1) A
Out 2, 3,4:
2 (1) A
60730
EN
UL
e34B
