KEYENCE LK-3100 - Manual (Page 18)

18
USING EACH FUNCTION SAMPLING CYCLE SELECTION
OFF
ON
0 MON(V) MON(mA)
1 2 3 AUTO
GAIN
LOW HIGH
TIMING STABILITY
ZERO/RESET
24V DC IN REMOTE GND TIMING ZERO GND ALARM GND NEAR FAR
RESET
BRIGHT DARK LASER ON
SHIFT SPAN
+ –
2 3 1
• When measuring a target that reflects a small amount of light,
such as black rubber:
Set a longer sampling cycle.
Note: When a short sampling cycle is set for measuring a target that has
low reflectance, detection may become unstable or an alarm output is
produced due to the extremely small amount of light being received.
• When measuring a target that reflects a large amount of light
such as a mirror-surfaced or metallic object:
Detection is available with a short sampling cycle setting.
Make sure it operates with the actual target.
There are four available settings for the sampling cycle: 128, 256, 512,
and 2048
µs. The initial setting is 2048 µs.
■ Setting the sampling cycle
1. Turn off the key-operated laser switch.
2. Hold down both the and keys for the SHIFT adjustment, and
then press the key for the SPAN adjustment.
The sampling cycle setting changes in sequence.
■ Checking the sampling cycle setting
The LED corresponding to the current sampling cycle setting illuminates.
TIMING STABILITY BRIGHT
2048 µs 512 µs 256 µs 128 µs
DARK LASER ON
One of these LEDs illuminates.
The LED corresponding to the current
sampling cycle setting illuminates.