Eliwell ic 902 User Manual

THE USER INTERFACE

The user has a display and four keys for
controlling status and programming of the
instrument.

KEYS AND MENUS

UP key Scrolls through the menu items

Increases the values

DOWN key Scrolls through the menu items

Decreases the values

fnc key ESC function (exit)

set key Accesses the setpoint

Accesses the menus
Confirms the commands

At start-up the instrument performs a
Lamp Test; for few seconds the display and
the leds blink, in order to verify their
integrity and correct operation. The instru­ment has two main menus: the “Machine
Status” and “Programming” menu.

ACCESSING AND USING MENUS

Resources are arranged in a menu, which
can be accessed by pressing and quickly
releasing the “set” key (“Machine Status”
menu) or by holding down the “set” key
for more than 5 seconds (“Programming”
menu).
To access the contents of each folder, indi­cated by the relevant label, just press the
“set” key once.
You can now scroll through the contents
of each folder, modify it or use its func­tions.
If you do not use the keyboard for over 15
seconds (time-out) or if you press the
“fnc” key once, the last value shown on
the display is confirmed and you return to
the previous screen mask.

MACHINE STATUS MENU
(See Machine Status Menu)

To access the “Machine Status” menu Press
and quickly release the “set” key.
If alarms are not present, the label “SEt”
appears. By using the “UP” and “DOWN”
keys you can scroll through the other fold­ers in the menu:

-Pb1: probe 1 value folder;

-SEt: Setpoint setting folder.

Set Setting

Access the “Machine Status” menu by
pressing and quickly releasing the “set”
key. The label of the “SEt” folder appears.
To display the Setpoint value press the
“set” key again.
The value appears on the display.
To change the Setpoint value, use the “UP”
and “DOWN” keys within 15 seconds.
If the parameter is LOC = y the Setpoint
cannot be changed.

Displaying Probes

By pressing the “set” key when the appro­priate label appears, the value of the
probe associated to it is displayed.

PROGRAMMING MENU
(See Programming Menu)

To enter the “Programming” menu, press
the “set” key for more than 5 seconds.
If specified, the access PASSWORD will be
requested, (parameter “PA1”), and (if the
password is correct) the label of the first
folder will follow.
To scroll through the other folders, use
the “UP” and “DOWN” keys; the folders
contain the level 1 parameters.
If the password is wrong, the display will
show the PA1 label again.
To enter the folder, press “set”. The label
of the first visible parameter appears. To
scroll through the other parameters, use
the “UP” and “DOWN” keys; to change the
parameter, press and release “set”, then
set the desired value using the “UP” and
“DOWN” keys, and confirm with the “set”
key to move to the next parameter.
PLEASE NOTE: It is suggested to switch-off
and switch-on again the instrument every­time it is changed the configuration of the
parameters: this prevents malfunctioning
on regulation and delay time occuring.

PASSWORD

The password “PA1”allow access to level 1
parameters. In the standard configuration
passwords are not present.
To enable them (value≠0) and assign them
the desired value, access the
“Programming” menu, within the folder
with the “diS” label.
If password is enabled, it will be request­ed at the entrance of the “Programming”
menu (see the “Programming Menu“ sec­tion);

COPY CARD

The Copy Card is an accessory connected
to the TTL serial port which allows pro­gramming quickly the instrument parame­ters. The operation is performed as fol­lows:

Upload

This operation loads the programming
parameters from the instrument.

Download

This operation downloads to the instru­ment the programming parameters.
The operations are performed accessing
the folder identified by the “FPr” label and
selecting, according to the case, “UL” or
“dL” commands; the operation is con­firmed by pressing the “set” key. If the
operation is successful an “y” is displayed,
on the contrary, if it fails a “n” will be dis­played.

NOTE:

• UPLOAD: instrument --> Copy Card

• DOWNLOAD: Copy Card --> instru­ment.

KEYBOARD LOCKING

The instrument includes a facility for dis­abling the keyboard, by programming the
“Loc” parameter (see folder with “Dis”
label). If the keyboard is locked, you can
still access the programming menu by
pressing the “set” key.
The Setpoint can also be viewed.

DIAGNOSTICS

The alarm condition is always signalled by
the buzzer (if present) and by the led of

the alarm icon
The alarm signal produced by a faulty
thermostat probe (probe 1) is shown as E1
on the instrument display.

IC 902

electronic thermostat with single output

fnc

set

LED

Position Associated function Status

out Relay 1 ON for relay ON, flashing for delay, disabled protection

or activation

Alarm ON for an active alarm

°C Setpoint ON when setting the Setpoint

set

f nc

IC902

out

DISPLAY

E1

ERROR

Thermostat probe fault

Error table

When the sensor detects an error condi­tion:

• the code E1 is displayed

• the regulator is activated as indicated by
the "On" and "Off" parameters if pro­grammed for the duty cycle or:

INSTALLATION

The instrument is designed for flush panel
mounting. Insert the unit through a
71x29 mm panel cut-out and affix with the
U-bracket supplied.
Select a location which will not be subject
to high humidity or condensation and
allow some ventilation to provide cooling
to the instrument.

ELECTRICAL
CONNECTIONS

Attention! Never work on electrical con­nections when the machine is switched on.
The instrument is equipped with screw ter­minal boards for connection of electrical

cables with a diameter of 2.5 mm

2

(one
conductor only per terminal for power
connections). For the capacity of the ter­minals, see the label on the instrument.
Relay outputs are voltage free. Do not
exceed the maximum permissible current
– in case of higher loads, use a contactor
of adequate power. Make sure that the
supplied voltage matches the values speci­fied for the instrument.
In the versions supplied on 12V, the power
supply must be provided via a safety trans­former protected by a 250 mA delayed
fuse. The probes do not have any insertion
polarity and can be lengthened by using a
normal bipolar cable (note that if the
probes are lengthened, this will affect the
behaviour of the instrument in terms of
EMC electro-magnetic compatibility –
wiring must be done with great care).
We advise you to keep the probe and sup­ply cables well away from the power
cables.

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 refrig­eration 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 auto­matic electronic control device to be
incorporated by independent mounting;

• according to its automatic operating fea­tures: as a 1 B-type operated control type;

• as a Class A device in relation to the cat­egory and structure of the software

UNPERMITTED USE

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 therefore subject to
fault. Any protection devices required by
product standards or dictated by common
sense due to obvious safety reasons should
be applied externally.

LIABILITY AND RESIDUAL
RISKS

Invensys Controls Italy S.r.L. shall not be
liable for any damages deriving from:

- installation/use other than that pre­scribed and, in particular, that which does
not comply with safety standards anticipat­ed by regulations and/or those given here­in;

- 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 dan­gerous parts without the use of tools;

- tampering with and/or alteration of the
products;

DISCLAIMER

This manual and its contents remain the
sole property of Invensys Controls Italy
s.r.l., and shall not be reproduced or dis­tributed 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 what­soever connected with its use. Invensys
Controls Italy s.r.l. reserves the right to
make any changes or improvements with­out prior notice.

TECHNICAL DATA

Frontal panel protection: IP65.
Casing: plastic body in resin type
PC+ABS UL94 V-0, inspection window in
polycarbonate, buttons in thermoplastic
resin.
Dimensions: frontal panel 74x32 mm,
depth 60 mm.
Installation: on panel, with drilling tem­plate 71x29 mm (+0.2/–0.1 mm).
Use temperature: –5…55 °C.
Storage temperature.: –30…85 °C.
Use environment humidity: 10…90 % RH
(not condensing).
Storage environment humidity: 10…90% RH
(not condensing).
Viewing range: –50…140 °C on 3 digit (and
a half) + mark display.
Analogue inputs: one PTC or NTC input
(selectable through parameter).
Serial: TTL for connection to Copy Card.
Digital outputs: one relay output, SPDT
8(3)A 250Va relay

Measuring range: from –50 to 140 °C.
Accuracy: 0.5% better than end scale + 1
digit.
Resolution: 0,1°C or 1°C.
Consumption:

• model 230V: 3 VA max.

• model 12V: 1,5 VA max.
Power supply: 12 Va/c ±10% or 230Va

±10% 50/60 Hz.

Warning: check the power supply specified
on the instrument label; for relay and
power supply capacities, contact the Sales
Office).

IC 902 2/4

Ont

0
0
>0
>0

Oft

0
>0
0
>0

Regulator output

OFF
OFF
ON
dc

PLEASE NOTE: The technical data
included in this document, related to
measurement (range, accuracy, resolu­tion, etc.) refer to the instrument
itself, and not to its equipment such as,
for example, sensors.
This means, for example, that sensor(s)
error(s) shall be added to the instru­ment’s one.