Proface APL3000B - Node Box PC - Manual (Page 4)

3
Handling
Wiring
Maintenance
Do not use the PS-A 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.
Be sure to design your system so that a communication fault between the PS-A and its host controller will
not cause equipment to malfunction. This is to prevent any possibility of bodily injury or equipment
damage.
After the PS-A unit’s backlight burns out the touch panel is still active, unlike the PS-A 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 PS-A unit touch panel switches
that may cause injury and/or equipment damage. If your PS-A unit’s backlight suddenly turns OFF, use
the following steps to determine if the backlight is actually burned out.
1) If the PS-A unit’s “Backlight Control” is not set and the screen has gone blank, your backlight is burned
out.
2) If the PS-A 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 PS-A unit. Doing so may cause a fire or an electric shock.
Do not operate the PS-A in an environment where flammable gases are present, since it may cause an
explosion.
To prevent electrical shock or equipment damage, unplug the PS-A unit’s power cord from the power
supply prior to installing or wiring the PS-A.
Do not use the voltage not specified in the manual. Doing so may cause a fire or an electric shock.
Do not connect or disconnect Host and PS-A unit communication cables while the PS-A is turned ON.
The PS-A uses a lithium battery for backing up its internal clock data and the battery may explode if it is
replaced incorrectly. When replacement is required, use a Pro-face-designated replacement product.
SEE “4.6 Replacing the Internal Battery” (page 4-11)