Contrast Adjustment - Siemens 7LF4 531-0 Instructivo

Modes
• Auto - Automatic operation
• Constant ON
• Constant OFF
Note: The output is switched ON if a control input signal is present.
• Extra
The switch status imposed by the
program is inverted (manual override). With the next effective switch
command, the time switch resumes control of ON/OFF switching.

Contrast adjustment

1 h-Test
When this function is activated, the output is switched ON for one hour.
After one hour, the time switch returns automatically to the programmed mode.
Reset
Warning!
The memory will be cleared,
and all set data will be lost.
Hold down for more than 3 seconds
and at the same time press and
release.
The language, time, date, summertime/wintertime
and switching times will have to bereentered.
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