5
Check and repair the current loop line regarding the faulty zone.
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The yellow led is turned on in correspondence with the symbol ’
D
’
and the buzzer sends a continuous tone.
([SODQDWLRQ
’ Fault on the gas sensor ’.
The gas sensor is faulty and is setting 2mA on the current loop.
Check for the faulty transmitter and, eventually, replace it with a
new one.
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0HVVDJHGLVSOD\HG
03
The red led flashes in correspondence with the symbol ’
)
’ and
the buzzer sends an intermittent tone.
([SODQDWLRQ
’Prealarm state’.
The prealarm concentration threshold in the zone under
monitoring has been exceeded. In this example a prealarm
threshold of 6% L.E.L. has been assumed (default factory value).
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The red led is turned on in correspondence with the symbol ’
)
’
and the buzzer sends a continuous tone.
([SODQDWLRQ
’Alarm state’.
The alarm concentration threshold in the zone under monitoring
has been exceeded. In this example an alarm threshold of 13%
L.E.L. has been assumed (default factory value).
Alarm relay, red led and buzzer are latched as active until the
reset button is pressed.
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The red led is turned on in correspondence with the symbol ’
)
’
and the buzzer sends a continuous tone.
([SODQDWLRQ
’Over Range state’.
The upper limit of the measuring range has been exceeded.
Alarm relay, red led and buzzer and indication ’OVR’ are latched
as active until the reset button is pressed.
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’Memory fault’.
An error in one of the internal memories has been detected. The
operation is not reliable anymore. Contact service for device
replacement. Codes errors are: 01 (EEprom memory fault), 02
(Flash memory fault) and 03 (RAM memory fault).
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A periodical check should include the following operations:
D
(every 3 .. 6 months):
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of the correct
operation of the entire detection system by applying calibrated
gas to each remote sensor and check of the value displayed.
Also refer to the sensor User Manual for further information.
E
(every 12 months):
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of the transfer function
of the central unit and correct detection of the abnormal
situations. This can be done by disconnecting the sensors from
inputs and forcing through a proper calibrator the input current
of each zone to the significant current values (e.g. 0mA: loop
broken, 2mA: fault, 4..20mA: normal operation, >20mA:
overrange).
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01.
This device can be set either for flammable gases like
Methane (’M’) and LPG (’G’) or for toxic gases like CO (’C’).
02. For cross sensitivities refer to the remote sensor User Manual.
03. Response time T
90:
Not applicable.
04. Temperature operating range: +5°C .. +55°C
05. Humidity operating range:
20% .. 90% RH (non cond.)
06. Pressure operating range:
800 .. 1100 hPa
07. Power supply range:
230V~ -15% +10% 50/60 Hz
08. Power absorption:
9,5VA
09. Electrical wirings:
See section [a].
10. Batteries:
See section [m].
11. Sample flow rate:
Not applicable.
12. Warm-up time:
Not applicable.
13. Stabilization time:
Not applicable.
Contacts rating: zone relays:
8 x 2A@230V~ cos
auxiliary relay: 1 x 5A@250V~ cos
Prealarm threshold range:
Methane and L.P.G.
1%..100%
LEL
CO 1 .. 999 ppm
Alarm threshold range:
Methane and L.P.G.
1%..100%
LEL
CO 1 .. 999 ppm
Serial port:
Standard RS232 (9600, 8, N, 1)
Protection degree:
IP 00 (IP 30 in DIN rail cabinet)
Dimensions:
158 x 90 x 71 mm (L x A x P)
Weight:
~ 850 gr.
ATEX protection:
This device must be installed in
NON-CLASSIFIED ATEX zones.
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Temperature:
+5°C .. +55°C.
Humidity:
20% .. 90% RH (non cond.)
Pressure:
800 .. 1100 hPa
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Please refer to the remote sensor User Manual.
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Not applicable to the Central Unit. For remote sensor please refer
to the remote sensor User Manual.
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Not applicable.
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Refer to sections [a] (OPERATION), [b] (ADJUSTMENT), [l]
(AUTOMATIC RESET) and to Fig. 5.
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x
3UREOHP
The password has been lost.
5HPHG\
Proceed with password reset as explained in section [b]
(ADJUSTMENT) under 'Change Password'.
x
3UREOHP
One channel (zone) shows the 'F' fault message.
3RVVLEOHFDXVH
The input current loop is broken or the transmitter is not
powered.
5HPHG\
Check connections between the transmitter and the central unit
searching for interruptions. Check also with a multimeter for the
presence of a voltage around 12Vdc between terminals '+V' and
'Gnd' of the relevant zone.
R
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019179E
0 20041
1
