3handling wiring maintenance – Proface APL3000B - Node Box PC User Manual
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3
Handling
Wiring
Maintenance
Do not use the PL as a warning device for critical alarms that can cause serious operator injury, machine
damage or can halt system operation. Critical alarm indicators and their control/activator units must be
designed using stand-alone hardware with redundancy and/or mechanical interlocks.
Do not use the PL with aircraft control devices, aerospace equipment, central trunk data transmission
(communication) devices, nuclear power control devices, or medical life support equipment, due to these
devices’ inherent requirements of extremely high levels of safety and reliability.
When using the PL with transportation vehicles (trains, cars, and ships), disaster and crime prevention
devices, various types of safety equipment, and medical devices that are not life-support related, use
redundant and/or failsafe system designs to ensure proper reliability and safety.
After the PL unit’s backlight burns out the touch panel is still active, unlike the PL unit’s “Standby Mode”. If
the operator fails to notice that the backlight is burned out and touches the panel, a potentially dangerous
machine operation error can occur. Therefore, do not create PL unit touch panel switches that may cause
injury and/or equipment damage. If your PL unit’s backlight suddenly turns OFF, use the following steps to
determine if the backlight is actually burned out.
1) If the PL unit’s “Backlight Control” is not set and the screen has gone blank, your backlight is burned
out.
2) If the PL unit’s “Backlight Control” is set to Standby Mode and the screen has gone blank, and
touching the screen or performing another input operation does not cause the display to reappear,
your backlight is burned out.
Do not disassemble or modify the PL unit. Doing so may cause a fire or an electric shock.
Do not operate the PL in an environment where flammable gases are present, since it may cause an
explosion.
To prevent electrical shock or equipment damage, unplug the PL unit’s power cord from the power supply
prior to installing or wiring the PL.
Do not use any voltages not specified in the manual. Doing so may cause a fire or an electric shock.
Do not connect or disconnect Host and PL unit communication cables while the PL is turned ON.
The PL uses a lithium battery for backing up its internal clock data. The battery may explode if it is
replaced incorrectly. When replacement is required, use a Pro-face-designated replacement product.