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 instru-
ment 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, indi-
cated 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 func-
tions.
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 fold-
ers 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 appro-
priate 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 every-
time 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 request-
ed at the entrance of the “Programming”
menu (see the “Programming Menu“ sec-
tion);
COPY CARD
The Copy Card is an accessory connected
to the TTL serial port which allows pro-
gramming quickly the instrument parame-
ters. The operation is performed as fol-
lows:
Upload
This operation loads the programming
parameters from the instrument.
Download
This operation downloads to the instru-
ment 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 con-
firmed by pressing the “set” key. If the
operation is successful an “y” is displayed,
on the contrary, if it fails a “n” will be dis-
played.
NOTE:
• UPLOAD: instrument --> Copy Card
• DOWNLOAD: Copy Card --> instru-
ment.
KEYBOARD LOCKING
The instrument includes a facility for dis-
abling 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

Summary

The User Interface

Keys and Menus

Describes the function of each key for instrument control and navigation.

Accessing and Using Menus

Explains how to enter and navigate through the instrument's menus.

Machine Status Menu

Details how to access and view the instrument's current operating status.

Programming Menu

Explains entry and navigation for configuring instrument parameters.

Password Protection

Covers enabling and using the PA1 password for level 1 parameter access.

Copy Card Functionality

Describes uploading and downloading parameters using the Copy Card.

Keyboard Locking

Explains how the LOC parameter disables keyboard input.

Diagnostics and Error Codes

Covers alarm signals and specific error codes like E1 for probe faults.

LED Indicators

Lists LED positions, their associated functions, and status indicators.

Installation and Operation

Installation Requirements

Details panel mounting, location selection, and ventilation.

Electrical Connections

Provides guidance on wiring, terminal boards, and power supply.

Permitted and Unpermitted Use

Defines the intended applications and restricted uses for the device.

Liability and Safety

Outlines responsibilities, risks, and necessary precautions for safe operation.

Technical Specifications

Lists key technical data including protection, dimensions, temperature, and power.

Parameter Configuration

Regulator Parameters

Details settings for differential, setpoint limits, and heat/cool modes.

Protective Device Parameters

Explains parameters for probe fault delay and activation times.

Display Settings

Covers keyboard lock, password, number display type, and temperature units.

Configuration Settings

Describes probe type selection and device version information.

Copy Card Operations

Details the upload and download functions for parameter transfer.

Diagrams and Wiring Information

Programming Menu Flow

Visualizes the sequence of operations within the programming menu.

Duty Cycle Diagram

Illustrates regulator output behavior during error conditions.

Wiring Diagrams

Shows electrical connections for 12V and 230V power supplies and inputs.

Eliwell ic 902 Specifications

General

Brand	Eliwell
Model	ic 902
Category	Thermostat
Language	English