ELECTRICAL
CONNECTIONS
The instrument is provided with screw ter-
minal boards for the connection of wires
with a maximum 2.5 mm
2
section (one
wire only per terminal for power connec-
tions).
Always turn the machine off before oper-
ating on electrical connections.
Relay outputs are voltage free. Do not
exceed the maximum allowed voltage; in
case of heavier loads use a suitable power
contactor.
Make sure the power supply voltage match
the instrument requirements.
In 12 V powered versions that do not
require probe with reinforced insulation
the power can be supplied through a safe-
ty transformer protected by a delayed 250
mA fuse.
Probes require no insertion polarity and
can be lengthened using standard bipolar
cable (please note that longer probes may
cause worse instrument performance in
terms of electro-magnetic compatibility:
maximum care shall be put in cabling).
Probe, digital input and supply cables shall
be kept far from power cables.
In versions requiring probes with rein-
forced insulation (refer to label on the
rear of the instrument ) probe contacts
are not insulated from power supply.
Therefore probes shall provided reinforced
insulation when they are easily accessible.
Moreover, when such models are installed
on a metal panel, such panel shall be
grounded.
In versions not requiring probes with rein-
forced insulation probe and power supply
contacts feature a reinforced insulation
from relay contacts. Therefore such con-
tacts (power supply and probe) can be
accessible with no risk provided that
power supply is SELV.
A reinforced insulation shall be provided
between relay contacts and accessible sec-
tions.
CONDITIONS OF USE
PERMITTED USE
For safety reasons the instrument must be
installed and used according to the
instruction provided and in particular,
under normal conditions, parts bearing
dangerous voltage levels must not be
accessible.
The device must be adequately protected
from water and dust as per the application
and must also only be accessible via the
use of tools (with the exception of the
frontlet).
The device is ideally suited for use on
household appliances and/or similar refrig-
eration equipment and has been tested
with regard to the aspects concerning
European reference standards on safety. It
is classified as follows:
• according to its manufacture: as an auto-
matic electronic control device to be
incorporated by independent mounting;
• according to its automatic operating fea-
tures: as a 1 B-type operated control type;
• as a Class A device in relation to the cat-
egory and structure of the software.
USE NOT PERMITTED
Any other use other than that permitted is
de facto prohibited.
It should be noted that the relay contacts
provided are of a practical type and there-
fore subject to fault. Any protection
devices required by product standards or
dictated by common sense due to obvious
safety reasons should be applied external-
ly.
LIABILITY AND RESIDUAL
RISKS
Invensys Controls Italy s.r.l. shall not be
liable for any damages deriving from:
- installation/use other than that pre-
scribed and, in particular, that which does
not comply with safety standards anticipat-
ed by regulations and/or those given here-
in;
- use on boards which do not guarantee
adequate protection against electric shock,
water or dust under the conditions of
assembly applied;
- use on boards which allow access to dan-
gerous parts without the use of tools;
- tampering with and/or alteration of the
products;
- installation/use on boards not complying
with the standards and provisions of cur-
rent legislation.
TECHNICAL DATA
Frontlet protection: IP65.
Casing: plastic in PC+ABS resin.
Dimensions: frontlet 72x30 mm, depth
45 mm.
Mounting: panel mounted, with drill holes
of 58x25,4 mm (+0,2/–0,1 mm) in diame-
ter.
Room temperature: –5…60 °C.
Storage temperature: –30…75 °C.
Display range: –50…140 °C on a 3 digit +
sign display.
Analog inputs: one standard NTC type sup-
plied or PTC (according to availability).
Digital outputs: 1 SPDT output on relay
(for ... see bal on the instrument)
Temperature range: from -50 to 110 °C
(from –40 to 230 °F).
Accuracy: the best of 0.5% at bottom of
scale.
Definition: 1 or 0.1 °C.
Power consumption: according to the
model
Power supply: according to the model. See
label on the instrument
NOTE: for the optionals, see label on the
instrument.
DISCLAIMER
This manual and its contents remain the
sole property of Invensys Controls Italy
s.r.l., and shall not be reproduced or dis-
tributed without authorization. Although
great care has been exercised in the
preparation of this document, Invensys
Controls Italy s.r.l., its employees or its
vendors, cannot accept any liability what-
soever connected with its use. Invensys
Controls Italy s.r.l. reserves the right to
make any changes or improvements with-
out prior notice.
EWDB 111
3/3
Invensys Controls Italy s.r.l
via dell'Industria, 15 Zona Industriale Paludi
32010 Pieve d'Alpago (BL) ITALY
Tel39 0437 986111
Fac39 0437 989066
Email info@climate-eu.invensys.com
Internet http:/www.climate-eu.invensys.com
6/2001 ing
cod. 9IS20165
