Digital Electronics Corporation Pro-Face PL-6900 Series, User Manual

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Preface
PL-6900 Series User Manual
• After the PL’s backlight burns out, unlike the PL’s
“Standby Mode”, the touch panel is still active. If the op-
erator fails to notice that the backlight is burned out and
touches the panel, a potentially dangerous machine miss-
operation can occur.
If your PL's backlight suddenly turns OFF, use the following
steps to determine if the backlight is actually burned out.
1) If your PL is not set to "Standby Mode" and the screen
has gone blank, your backlight is burned out.
2) Or, if your PL is set to Standby Mode, but touching the
screen does not cause the display to reappear, your
backlight is burned out.
• If metal particles, water or other types of liquids contact
any of the PL’s internal parts, immediately turn the unit’s
power OFF, unplug the power cord, and contact either
your PL distributor or the Digital Electronics Corporation.
• Read and understand Chapter 4 “Installation and Wiring”
thoroughly in order to select an appropriate installation
location for the PL.
• Before either plugging in or unplugging a board or inter-
face connector, be sure to turn the PL’s power OFF.
WARNINGS
• Do not create touch panel switches which could possibly
endanger the safety of humans and equipment. This is due
to the possibility of a malfunction in the PL or its cable(s),
causing the output of a signal that could result in a major
accident. All of a system’s major, safety-related switches
should be designed to be operated separately from the PL.