4.1.4 Lockout
The LOI has a lockout feature that prevents nuisance actuation by someone brushing against the glass window,
raindrops, dirt, insects, etc. This lockout mode is automatically established when no buttons are pushed for 30
seconds (default). This countdown to lockout is configurable.
In order to unlock the display, input a "Z" pattern (Figure 4-4). First, touch the top left (gray) Enter key. Next, touch
the top right key, followed by the bottom left key and the bottom right key. The LK notation in the upper right
corner of the display will disappear. Touch the Enter key once more to enter into the menu structure. Whenever a
key is touched additional time to lockout is provided, so that the lockout feature does not become a nuisance. This
additional revert time is one hour (default) and is also user configurable.
NOTE:
Always clean dust and soil away from the LOI screen each time the LOI is used. Excessive
dust can prevent the LOI from entering lockout. This condition can cause uncommanded
operations to occur.
Figure 4-4 ‘Z’ Pattern Entry
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