1.3.1 Display and Indicators
Figure 2. Display in Run Mode
1. Stability Indicator (STB = Green)
2.
Active
TEACH Indicators
• DYN = Dynamic TEACH selected (Amber)
• WND = Symmetric window thresholds are
active
(Amber)
In Run mode, the 3-digit, 7-segment display provides real
time
information
about signal strength for all models and target
position
for
models with a
fixed
background suppression distance. The numeric value of 0 to 990 represent the amount of the received light divided
by the threshold, and represents the excess gain of the sensing event expressed as a percentage of the switch point. This value is called
normalized signal strength (NSS). A NSS display range of 999 indicates a saturated received light signal, meaning that low contrast
detection
is not possible.
In single threshold teach modes (Two-Point
Static,
Dynamic, Light Set, or Dark Set), the output switches at a displayed value of 100
(excess gain of 1.0).
For models with a
specified
background suppression distance,
indicates that a target is present at a distance beyond the
background suppression distance and is being suppressed. In Light Operate mode, the output switches
off
when
displays. For the
background suppression models, the sensor's output state when displaying
can be controlled using the
menu. By default,
the sensor treats a target in the background as a dark signal and honors the LO/DO
selection.
A displayed value of
indicates no light received or a loss of signal.
In Window Set teach mode, the value 100 represents the taught signal strength. The displayed value is the percentage of the received
light divided by the taught signal strength. The output switches at displayed values above and below 100 as determined by the user-
selected window
offset
percentage.
Output Indicator
• On—Outputs
conducting
(closed)
•
Off—Outputs
not
conducting
(open)
Stability Indicator (STB)
• On—Stable light signal received
• Flashing—Light intensity is within the switching threshold hysteresis band
•
Off—No
light signal received
Active
TEACH Indicators (DYN and WND)
• DYN and WND
off—Two-Point
Static
, Light Set, or Dark Set TEACH mode selected (Two-Point
Static
TEACH is the default).
• DYN and/or WND
flashing—The
sensor is in TEACH mode.
• DYN on—Dynamic TEACH mode selected
• WND on—Symmetric Window thresholds are
active.
The switch points are above and below 100 by the
offset
percentage
1.3.2
Buttons
Use the sensor
buttons
(-)(MODE) and (+)(TEACH) to program the sensor. See
instructions.
(-)(MODE)
• Decrease gain: press and release (-)(MODE), then press and hold (-)(MODE) to rapidly decrease gain
• Enter Setup mode: press and hold (-)(MODE) for longer than 2 seconds
• Navigate the sensor menu: press (-)(MODE)
Q3X Laser Contrast Sensor
4
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