IST-47CPZ003
Istruzione / User’s Manual / Manuel d’utilisation
Pag.4/9
Comelit Group S.p.A. - Via Don Arrigoni 5 - 24020 Rovetta S. Lorenzo BG Italy
Tel. +39 0346 750 011 - Fax +39 0346 71436
corispondenza del Led Giallo , il relè ALARM 1 con il 3° Led rosso e il relè ALARM 2 con il Led ALARM. Poi dopo 5
secondi la centralina torna automaticamente in funzionamento normale.
NOTE
: la funzione si attiva su tutti i canali anche se disabilitati o con Fault e/o 1° e/o 2° Led Rosso accesi. Ma non
è utilizzabile se uno o più ingressi sono oltre il 10%LEL (3° e/o 4° Led accesi).
EN
DESCRIPTION
The
47CPZ003
is a control unit for heating plants or environments to be protected from possible gas leaks,
which can
be connected up to 3 remote catalytic detectors for flammable gases. It can be connected to the following detectors:
•
The 47SE192KM should be used in plants using Methane.
•
The 47SE192KG should be used in plants using LPG.
The
47CPZ003
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. p
ower supply unit with two 12V-7A/h buffer
batteries
).
On the front plate, there are three vertical Led bars that indicate the operating status and gas concentration detected
by each remote detector and two
function keys (
TEST e RESET
).
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 control
input for
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
to indicate the normal operation and the presence of power
1
st
Red LED:
lights up
if the gas concentration exceeds 4% LEL.
2
nd
Red LED:
lights up
if the gas concentration exceeds 8% LIE.
3
nd
Red LED (
ALARM 1
):
lights up
if the gas concentration exceeds
the 1
st
alarm threshold (configurable to 10 or
15% LEL)
and
within 5 seconds the
ALARM 1
relay will activate. This relay is normally used as a prealarm using a
siren.
4
st
Red LED (
ALARM 2
):
lights up
if the gas concentration exceeds
the 2
nd
alarm threshold
(20% LEL); if the gas
persists, after 30 seconds, the red LED
ALARM 2
lights up
and the
ALARM 2
relay will activate. It
is configurable in
positive (normally excited) or negative 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 control unit must remain powered.
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
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
rd
Red LED on the alarm channel flashes and the
ALARM 1
relay
connected to the Siren is silenced, but after 120 seconds, it will automatically reactivate.
RESET:
if the 2
nd
alarm threshold is exceeded, the
ALARM 2
relay and the channel LED bar in alarm
remains
activated (
latched
), even if the gas concentration decreases (
because the mounted valve is closed
, if installed).
After having eliminated the cause of the alarm, to restore the normal working 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
, with
the yellow LED on the corresponding
channel and the
FAULT
relay
will activate. This relay
is
normally energized with voltage-free changeover contacts
, 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
malfunction. 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.
INSTALLATION
The control unit and detectors should be installed
according to the national disposition in force on the matter.
Positioning:
The control unit must be installed in an accessible location, easily visible and away from heat sources.
The control unit cannot be installed outdoors.
Please note that for safety, the control unit is to be installed in safe areas where there are present or can form
flammable atmospheres and concentrations exceeding 24 % volume oxygen.
The remote detectors:
it has to be installed as described in the specific instructions attached with it. After the instal-
lation and referred to the gas indicated on the testing label of the remote
gas detector
, apply on the
47CPZ003
, the
self-sticking label with the name of the detected gas inserted
in the package
.
