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CTP21 (29.05.2019)
VERIFICA FUNZIONAMENTO
Verificaciones periódicas: Recomendamos realizar la verificación funcional cada 6-12 meses según el uso. Para
la verificación de detectores remotos consulte las instrucciones específicas.
IMPORTANTE: La prueba debe realizarse con extremo cuidado y por personal autorizado y capacitado, ya que las
salidas (relés) se activan, lo que hace que los dispositivos de alarma conectados se activen. El botón TEST se
desactiva en caso de alarma.
Verifica el funcionamiento eléctrico de la unidad de control : mantenga presionado el botón de TEST durante 5
segundos, se iniciará el procedimiento de TEST , se enciendan los 3 LEDs y se activan los relés de FALLA y ALARMA
1 ; el LED rojo de ALARMA se enciende y el relé de ALARMA 2 se activará. Luego, después de 5 segundos, la unidad
vuelve automáticamente al funcionamiento normal.
NOTAS: la función de TEST se activa en todos los canales, incluso si está deshabilitada o con los LEDs de falla y
/ o 1º y / o 2º ON. Pero no se puede usar si una o más entradas tienen más del 10% de LEL (3° y / o 4º LED ON).
EN
DESCRIPTION
The CTP21 is a control unit for heating plants or environments to be protected from possible gas leaks,
connected up to 3 remote catalytic detectors for flammable gases. It can be connected to the following detectors:
• The ST441M and SE193KM
• The ST441G and Se193KG
The CTP21 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.
batteries, our mod.
PS180/24VDC).
On the front plate, there are three vertical Led bars that indicate the operating status and gas concentration detect-
ed by each remote detector and two
The control unit has two alarm levels with sealed relay outputs (ALARM1 e ALARM2), with tension free changeover
contacts. Furthermore, it is also present another output relay (FAULT) in positive safety for fault situations, and an
auxiliary input (AUX), configurable as an input to connect NO contact devices such as a manual Button or as a con-
trol 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
Preheating: when
the control unit is powered, the 60 seconds preheating phase begins. This is only for the enabled
inputs (remote detector installed), on the corresponding Led Bar, the yellow LED flashes and at the end of the pre-
heating, the green LED "ON" lights up.
Normal operating:
the control unit reads the gas concentration through the remote gas detectors of the enabled
inputs and displays the status on the corresponding Led Bar.
The Green LED
lights up
st
1
Red LED:
lights up
nd
2
Red LED:
lights up
nd
3
Red LED (ALARM 1):
15% LEL)
and
within 5 secondsthe
ren
(Our model SE301A when powered by 230VAC or the model SE301B when powered by
st
4
Red LED (ALARM 2):
persists, after 30 seconds, the red LED ALARM 2
positive (normally excited) or negative logic.
valve and/or the interruption of the electrical power at the plant only,
If the manual button is connected to the AUX 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 "AUX" input, in the
case that the gas is still open, 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 3
nected to the Siren is silenced, but after 120 seconds, it will automatically reactivate.
nd
if the 2
alarm threshold is exceeded, the
RESET:
vated (latched), even if the gas concentration decreases
having eliminated the cause of the alarm, to restore the normal working conditions press the RESET key. For
ty, the key cannot operate when the remote detector is detecting gas.
Faults:
The control unit indicates a fault condition of a remote gas
ing channel and the
FAULT
tacts, if necessary, it can be used both to signal remotely an occurred damage and to signal the absence of power
to the instrument.
Fault signals must not be connected to the alarm signals.
Manual reset solenoid valve NC with magnetic sensor failure: this situation appears ONLY when is installed an electro
valve with magnetic sensor; if it not close the gas, (with the ALARM 2 relay in alarm), the magnetic sensor signals to the control unit the mal-
function. In this case all LED will be lighted and relays will be activated. The failure condition (yellow led lighted and FAULT relay activated)
will be cancelled if pressing the RESET key, the solution of the problem will be visualized.
GECA S.r.l. - Via Enrico Fermi, 98 25064 GUSSAGO (BS) ITALY Tel. +39 030 3730218 - Fax +39 030 3730228
Manual de ususario
or SE182KM
or SE182KG
function keys (TEST e RESET).
to indicate the normal operation and the presence of power
if the gas concentration exceeds 4% LEL.
if the gas concentration exceeds 8% LIE.
lights up
if the gas concentration exceeds
ALARM 1 relay will activate. This relay is normally used as a prealarm using a si-
lights up
if the gas concentration exceeds
It is normally used to stop the gas through the manual reset solenoid
rd
relay
will activate. This relay
/ User's Manual / Manuel d'utilisation
should be used in plants using Methane.
should be used in plants using LPG.
power supply unit with two 12V-7A/h buffer
the 1
the 2
lights up
and the ALARM 2 relay will activate. It
the control unit must remain powered.
Red LED on the alarm channel flashes and the
ALARM 2
relay and the channel LED bar in alarm
(because the mounted valve is
detector, with
normally energized with voltage-free changeover con-
is
st
alarm threshold (configurable to 10 or
24VDC).
nd
alarm threshold
(20% LEL); if the gas
is configurable in
ALARM 1
closed, if installed).
the yellow LED on the correspond-
Pag.4/9
which can be
relay con-
remains
acti-
After
safe-
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