GD/GS/GSR/GR/GK-24/230
IS Atos 1004.doc
5
GB
FUNCTION
When power supply is switched on, a green LED will flash to
indicate power ”ON”. This will also start the heating process of
the sensor. After approximately 4 minutes the green LED will
light and indicate ”Sensor Active”.
The detector has one yellow and two red LEDs. The yellow LED
indicates low gas concentration
(Alarm C)
and the red LEDs
indicate medium gas concentration
(Alarm B)
and high gas
concentration
(Alarm A)
.
When gas is detected the LEDs
(2)
will light and the relay
corresponding to the alarm level will change state. If alarm
delay is chosen (see below) the respective LED will flash and it
will light (and the relay will change state) when the chosen
delay time is exceeded.
AUTOMATIC/MANUAL RESET
Is managed by DIP switch
(1)
n
o
3 where “on” means automatic
reset and “off” means manual reset by pressing the “Reset/Test/
Service”-button (located under the cover).
ALARM TIME DELAY (T1)
Is managed by DIP-switches
(1)
n
o
1 and n
o
2:
n
o
1
n
o
2
on
on
No alarm delay
off
on
(1) minutes alarm delay
on
off
(10) minutes alarm delay
off
off
(30) minutes alarm delay
FAIL SAFE
Relays are in normal mode energized and will change state if
power failure or if a fault situation occurs.
SELF TEST FUNCTION
Press the “Reset/Test/Service”-button
(5)
for 5 seconds and the
test program will start and go through all LED functions and all
relay functions in five seconds intervals.
FAULT FUNCTION
If there is a voltage drop (GV-value below 0,1V) from the sensor
there is a fault situation. During the first four hours the green
LED will go out and the other LED’s will flash. Alarm relay C will
change state.
After four hours the LED “Alarm B” will light (other LED’s will go
off) and relay “Alarm B” will also change state.
SERVICE FUNCTION
Pressing the ”Reset/Test/Service” button
(5)
for 10 seconds will
lock all alarm functions for 60 minutes. During this period it is
always possible to start a new 60-minutes period by pressing the
button for 10 seconds again. Return to active status is automatic
at the end of the 60-minutes period or may be done manually by a
single press on the “Reset/Test/Service”-button. When the service
function is activated all LED’s will flash and all relays will be in
normal mode position.
INSTALLATION
Connect the detector according to the wiring diagram.
CALIBRATION
The detectors are delivered for a specific gas type and other
calibrations are normally not necessary. The detector is named
with the required gas type being detected. It is, however, very
easy to change the thresholds by using a service adapter.
SA200 is connected at the test terminal.
(3)
ANNUAL FUNCTION CONTROL
Testing the system is recommended to be done at least twice a
year. A basic function test can be made using a service tool
(SA200) and a voltage meter.
Extended control and calibration requires also test gas with a
specific concentration.
Contact us for more information.
TECHNICAL DATA
Housing:
Polycarbonate, PC
Power supply:
230 V AC, 50/60 Hz (model Gx230-XX)
12-24V AC/DC (model Gx24-XX)
Power consumption:
Max 2W
Indications:
Power/Active and alarm indication on
three levels.
Outputs relay:
Potential free contacts (230V, max 5A) .
Ambient temp:
-40
0
C - + 50
0
C (Automatic temperature
compensation)
Humidity:
0-95% Rh (non condensing)
Glands:
4 of M16 membrane glands
Screw terminals:
< 1,5 mm2, fuse < 10A
NOTE! High voltage under lid!
The unit must only be opened by authorised personnel!
Please Note!
The sensors used in the GD/GS/GR/GK/GSR range of products
are not gas specific. Care should be taken when installing the
equipment to minimize any cross contamination from other gases
or vapours.
For further guidance on specific applications contact us.
Specifications subject to change.
n 4 not used
n 1
n 2
n 3 ALARM RESET: ON=AUTO, OFF=MANUELL
ON
A
RESET/TEST
TEST TERMINAL
C
B
LED A
LED B
LED C
POWER
ALARM A
ALARM B
ALARM C
(-)
+ 5VDC
GV OFFSET