Recommendations
Critical Systems, Alarms, and Handling Requirements
Critical alarm indicators and system functions require independent and redundant hardware protection and/or mechanical interlocks.
If the FDM128 Ethernet display for eight devices becomes inoperative due to some reason (for example, due to an inoperative backlight), it may be difficult or impossible to identify a function. Functions that may present a hazard if not immediately executed, such as an emergency stop, must be provided independently of the FDM128 display .
The design of the control system must take into account simultaneously:
-
An inoperative FDM128 display .
-
The inability of the operator to control the circuit breakers or to respond to detected errors by using the FDM128 display .
Handling the LCD Panel
The following characteristics are specific to the LCD panel and are considered normal behavior:
-
LCD screen may show unevenness in the brightness of certain images. These images may appear differently when seen from outside the specified viewing angle. Extended shadows, or cross-talk, may also appear on the sides of screen images.
-
LCD screen pixels may contain black and white-colored spots and color display may seem to have changed over time.
-
When the same image is displayed for a long period, an after-image may appear when the image changes. If this happens, turn off the FDM128 display , wait 10 seconds, and then restart it.
![]() |
---|
SERIOUS EYE AND SKIN INJURY
The liquid present in the LCD panel contains an irritant:
Failure to follow these instructions can result in injury or equipment damage.
|
Using the Touch Panel Correctly
![]() |
---|
UNINTENDED EQUIPMENT OPERATION
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
|
Use only one finger to select an object on the touch panel.
If the touch panel receives pressure at two or more points at the same time, an unintended object could be selected.