Setting Parameters
Control Unit Models 9010 LCD and 9020 LCD
29
GB
6.5 Access code 4 - Configuration operations
The Access Code is accepted if the ENTER button is kept pressed when the Control Unit is turned
on, or first typing the Access Code 123.
P11 Simulation of the increase in concentration via the UP and
DOWN buttons with alarms unblocked.
In addition to the LED's, the alarm relays [unless they are
blocked in Access Code 2, step 3] are activated in correspond-
ence to the various alarm set-points.
To silence the
acoustic alarm,
press the
ENTER button.
Press two times in
succession in order
to exit.
P12 Efficiency test of the digital outputs
A change of state of all the opto-isolators and therefore of the
relays connected thereto is detected [even if the alarms were
blocked in Access Code 2, step 3]
Indication 1 = state of the opto-isolators as in the configuration
performed via Access Code 4
Indication 2 = obtained by pressing the Up button: All of the
opto-isolators change in state compared to condition 1.
n.b.: Upon exit from step 12, the state of the opto-isolators will
be automatically re-comutated back into condition 1
[In the ATEX ver-
sion, the FAILURE
state does not
change]
if it has already com-
mutated automati-
cally when any
Access Code is en-
tered.
Step Function NOTES
Step Function NOTES
P1 Setting of the supply current of the catalytic sensor.
Individual for each channel. Admissible values 5500 mA
The step is automatically skipped if the power supply is provid-
ed as constant voltage
Only for passive
sensors
P2 Setting of the FAILURE current for power supply interruptions.
Individual for each channel. Permissible values 1500 mA
Reaching the preset
value activates the
Failure relay
P3 Setting the value related to the negative drift of the analogue
signal. Permissible value 0 -10 % of the full scale
Reaching the preset
value activates the
FAILURE relay and
d1 is displayed
P4 Selection of the Unit of Measure: LEL, LELm, PPM, %VOL,
g/m
3
, no unit of measure
[In the ATEX version, the Units of Measure LEL , LELm and
%VOL [oxygen] are the only ones that can be selected; the
selection % Vol for oxygen analysis is possible only after the
configuration of Access Code 52, step 3 with setting 2 or 3,
depending on the type of transmitter]
P5 Setting the offset value
[Permissible values 09000] - Individual for each channel
In the ATEX version,
the offset value is
zero
P6 Setting the full scale value.
[Permissible values: 09000] - Individual for each channel.
The variation of the full scale value modifies the set-point val-
ues of the alarms and the calibration setting datum at Step 2 of
Access Code 1.
The precision of the control module of 1% is guaranteed to be
compatible with the range of measurement, offset value [P5]
and full scale value [P6] selected.
In the ATEX version,
the permissible val-
ues are between 1
and 100 for the com-
bustible gas and
0-25 % for oxygen]
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