Preface
3
PL-5910 Series User Manual
•
After the PL unit’s backlight burns out, unlike “Standby
Mode”, the PL unit’s touch panel is still active. If the
operator fails to notice that the backlight is burned out
and touches the panel, a potentially dangerous machine
operation error can occur.
If your PL unit'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 unit’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 Wir-
ing” thoroughly in order to select an appropriate instal-
lation location for the PL.
• Before either plugging in or unplugging a board or inter-
face connector, be sure to turn the PL unit’s power OFF.
• To prevent a possible explosion, do not install the PL in
areas containing flammable gases.
• Do not use the PL unit with aircraft control devices, aero-
space equipment, central trunk data transmission (com-
munication) devices, nuclear power control devices, or
medical life support equipment, due to their inherent re-
quirements of extremely high levels of safety and reli-
ability.
• When using the PL with transportation vehicles (trains,
cars and ships), disaster and crime prevention devices,
various types of safety equipment, non life-support-re-
lated medical devices, etc. be sure to design redundant
and/or fail-safe system designs to ensure the proper de-
gree of reliability and safety.
WARNING
