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- Do not use the GLC unit as a warning device for critical alarms
that can cause serious operator injury, machine damage or pro-
duction stoppage. Critical alarm indicators and their control/acti-
vator units must be designed using stand-alone hardware and/or
mechanical interlocks.
- Do not use GLC touch panel switches to perform operator safety-
related or important accident prevention operations. These op-
erations should be performed by separate hardware switches to
prevent operator injury and machine damage.
- Be sure to design your system so that equipment will not mal-
function due to a communication fault between the GLC and its
host controller. This is to prevent any possibility of bodily injury
or material damage.
- The GLC is not appropriate for use with aircraft control devices
or medical life support equipment, central trunk data transmis-
sion (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 GLC with transportation vehicles (trains, cars
and ships), disaster and crime prevention devices, various types
of safety equipment, non-life support related medical devices, etc.
redundant and/or failsafe system designs should be used to en-
sure the proper degree of reliability and safety.
WARNINGS
Touch Panel Warnings:
After the GLC's backlight burns out, unlike the GLC's "Standby
Mode", the touch panel is still active. If the operator fails to no-
tice that the backlight is burned out and touches the panel, a po-
tentially dangerous machine operation error can occur.
1) If your GLC is not set to " Standby Mode" and the screen has
gone blank, your backlight is burned out.
2) Or, if your GLC is set to Standby Mode, but touching the screen
does not cause the display to reappear, your backlight is burned
out.
Also, to prevent an accidental machine operation error, Pro-face
suggests you use the GLC's built-in "USE TOUCH PANEL AFTER
BACKLIGHT BURNOUT" feature, that will automatically detect a
burnout and disable the touch screen.
Installation Warnings:
- High voltage current runs through the GLC. Except for replacing
the backlight, never disassemble the GLC, otherwise an electric
shock can occur.
DANGERS
