Description; Operational Description - Tecno Control SE293K User Manual

IST-2293.KM01.01
IMPORTANTE: La prova, deve essere eseguita con estrema attenzione e da personale autorizzato e addestrato, in
quanto vengono attivate le uscite (relè) provocando l'attivazione dei dispositivi d'allarme collegati. Il pulsante di TEST
è disabilitato se uno o più ingressi sono oltre il 10%LEL.
Verifica funzionamento elettrico della centralina, tenere premuto il pulsante TEST per 5 secondi, si avvierà la
procedura di test, indicata delle scritte sul display. In sequenza si illumineranno i 3 Led e si attiveranno i relè FAULT
e ALARM 1, e ALARM 2. Poi dopo 5 secondi la centralina torna automaticamente in funzionamento normale.
EN

DESCRIPTION

The SE293K is a Control unit for heating plants or environments to be protected from possible gas leaks,
be connected up to 3 remote catalytic detectors for flammable gases. It can be connected to the following detectors:
• The SE192KM and SE193KM
• The SE192KG and Se193KG
The SE293K is for wall mounting and the protection code is IP65. It is mains powered at 110÷240VAC / 50÷60Hz
but can also be connected either to an external 24VDC power supply (e.g.
buffer batteries, our mod.
On the front plate there are, three LED that indicate the operating status, the
tration detected by each remote detector and two
The control unit has two alarm levels with sealed relay outputs (ALARM1 and ALARM2), with tension free changeover
contacts. Furthermore, it is also present another output relay (FAULT) in positive
trol unit has two auxiliary inputs. AUX1 to connect NO contact devices such as a manual Button. AUX2 is the control
input for our Manual NC Resetting Valve with positioning sensor.
In Fig.1 a connection example with 3 remote gas detectors, siren, manual reset solenoid valve and manual button.

OPERATIONAL DESCRIPTION

Power on: all times the control unit is powered, the display shows the name of the manufacturer, the model and the
firmware version (eg. Tecnocontrol srl / SE293K v.1.00).
Language: Then, on the display, the choice of available languages (eg EN-EN-FR) appears, pressing the RESET
key will change the language, pressing the TEST key confirms the choice. If you do not make a choice within 10
seconds, the program continues automatically maintaining the last selected language.
WARNING: the language choice, always appears at each power on, but after 10 seconds the program will automatically continue maintai-
ning the last selected language.
Info: then, always appear in sequence 3 screens with configuration set reminders via the Dip-Switch: SCALE OF
MEASURE / ALARMS THRESHOLD / ENABLED DETECTORS. Then the program continues automatically.
Preheating: when the control unit is powered, the preheating phase begins, the display
countdown and the yellow LED flashes.
Normal operating: at the end of the preheating, the display shows the value of the gas concentration and the sta-
tus of the remote detectors.
The Green LED
lights up
The Red LED (ALARM):
10 or 15% LEL) and within 5 seconds the
(Our model SE301A when powered by 230VAC or the model SE301B when powered by
ing a siren
The display shows the channel, in alarm, alternately displaying the value and writing AL1.
The Red LED (ALARM):
persists, after 30 seconds, the ALARM 2 relay will activate. It
tive logic. It is normally used to stop the gas through the manual reset solenoid valve and/or the interruption of the
electrical power at the plant only,
The display shows the channel, in alarm, alternately displaying the value and writing AL2.
If the manual button is connected to the AUX1 input, when pressed, the ALARM 2 relay will be activated.
If it has been installed a manual reset solenoid valve N.C. with magnetic sensor (mod. VR420÷VR480) connected to AUX2 input, in case
the valve has not closed the gas, the yellow LED and the FAULT Relay will activate (see FAULTS section).
"RESET" Key: this key has two functions:
SILENCING : when the key is pressed, the Red LED flashes and the
lenced, but after 120 seconds, it will automatically reactivate.
nd
if the 2 alarm threshold is exceeded, the
RESET:
centration decreases (because the valve is
ly displaying the value and writing AL2. After having eliminated the cause of the alarm, to restore the normal work-
ing conditions press the RESET key. For safety, the key cannot operate when the remote detector is detecting gas.
Faults: The control unit indicates a fault condition of a remote gas detector. The display shows FLT (FAULT) on the
faulty channel, turns on the yellow LED, and activates the FAULT relay that is
changeover contacts, if necessary, it can be used both to signal remotely an occurred damage and to signal the ab-
sence of power to the instrument.
Manual reset solenoid valve NC with magnetic sensor failure: this situation appears ONLY when is installed an electro
valve with magnetic sensor; connected to AUX2 imput. If the valve does not close the gas, (with the ALARM 2 relay in alarm), the magnetic
sensor signals to the Control unit the malfunction. If the problem will be resolved, (the solenoid valve is closed) the fault condition (yellow
LED on and FAULT relay activated) will be canceled by pressing the RESET key. If, however, by pressing the RESET key, the alarm ends,
TECNOCONTROL S.r.l. Via Miglioli 47 SEGRATE ( MI )
Istruzione / User's Manual / Manuel d'utilisation
or SE182KM
or SE182KG
PS180/24VDC).
function keys (TEST and RESET).
to indicate the normal operation and the presence of power.
lights up flashing, if the gas concentration exceeds
ALARM 1 relay will activate. This relay is normally used as a prealarm us-
lights up if the gas concentration exceeds
the control unit must remain powered.
closed, if installed).
Fault signals must not be connected to the alarm signals.
should be used in plants using Methane.
should be used in plants using LPG.
nd
the 2
is configurable in positive
ALARM 1
relay remains activated (latched), even if the gas con-
ALARM 2
The display shows the channel, in alarm, alternate-
power supply unit with two 12V-7A/h
display, which shows the gas concen-
safety for fault situations.
shows the 60 seconds
st
the 1 alarm threshold (configurable to
24VDC).
alarm threshold (20% LEL); if the gas
(normally energized) or nega-
relay connected to the Siren is si-
normally energized with voltage-free
Tel: 02/26 92 28 90 Fax: 02/21 33 734
Pag.4/9
which can
The con-