Control Unit Models 9010 LCD and 9020 LCD
24
Setting Parameters
MSA
GB
Mod. 9020 - Example for use of the buttons for use of the Access Codes
or:
ATEX version – Operating modes of the Control Unit with one of the Access Codes entered
When the ENTER button is released:
- the ALARM INHIBIT tag flashes in the displays for both of the channels.
- All of the alarm set-points are blocked and frozen in the state in which they are found when the
button is released.
- The horn, if already activated, is silenced with the exception of the EEEE condition.
- The FAILURE relay is in a state of failure.
- The value of the analogue signals of both the channels is a function of the preselection made
with the step.
- P 20 of Access Code 4 with the exception of step P11 of Access Code 3. [Simulation test of
unblocked alarms]
Standard version – Operating modes of the Control Unit with one of the Access Codes en-
tered
When the ENTER button is released:
- in the display of both the channels, the ALARM INHIBIT tag flashes
- All of the alarm set-points are blocked and frozen in the state in which they are found when the
button is released.
- The horn, if activated, is deactivated by the Control Unit with the exception of the EEEE con-
dition.
a. Hold down the ENTER button until the incorporated green LED flashes.
b. Next, press the UP button one or more times until the desired number related to the
Access Code is selected.
c. Confirm the selection by pressing the ENTER only once.
d. CHa appears in the upper display.
e. Press ENTER to operate with channel A.
f. P1 appears in the upper display.
g. Proceed as described in item e] in the example related to model 9010.
h. Press the UP button to operate with channel B
i. CHb appears; Press the ENTER button to confirm the choice.
j. P1 appears in the lower display.
k. Proceed as described in item e) in the example related to model 9010.
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