Panasonic SUNX CX-400 Series - Sensitivity Adjustment; Automatic Interference Prevention Function

3
To understand sensitivity adjustment, you must first understand the differ-
ence between the “light received” and the “dark” condition.
Do not confuse the “light received” and “dark” condition with the operation
modes “Light-ON” and “Dark-ON”!
Relationship between output and indicators
= lit, = unlit
 Use a standard screwdriver and turn the adjuster slowly. Using
excessive force will damage the adjuster.
This procedure assumes that “Light-ON” is set for the operation mode.
If “Dark-ON” is the operation mode, the output will behave the other way
around!
 This function is not available for the thru-beam type sensor. See
“INTERFERENCE PREVENTION FILTERS” on page 4.
The automatic interference prevention function allows you to mount up to
two sets of sensors next to each other.
6 SENSITIVITY ADJUSTMENT
Light received condition Dark condition
Thru-beamRetroreflectiveDiffuse reflective
Light-ON Dark-ON
Stability
indicator
Operation
indicator
Output
Sensing
condition
Output
Operation
indicator
Stability
indicator
ON
Stable
light
OFF
Unstable
light
OFF
Unstable
dark
ON
Stable
dark
Emitter Receiver
Object to
be sensed
ReceiverEmitter
Sensor Reflector
Sensor
Reflecto
r
Object to
be sensed
Object to
be sensed
Sensor
Sensor
Step
Sensitivity
adjuster
Description
1 Turn the sensitivity adjuster fully counter-
clockwise to the minimum sensitivity posi-
tion, MIN.
2 In the “light received” condition, turn the
sensitivity adjuster slowly clockwise to find
point A where the sensor output turns
ON.
*1
*1
Remember, this only applies if the operation mode is Light-ON.
3 In the “dark” condition, turn the sensitivity
adjuster clockwise until the sensor output
turns ON.
*1
Turn it back slowly to confirm point B,
where the sensor output just turns OFF.
*1
If the sensor output does not turn ON even
when the sensitivity adjuster is turned fully
clockwise, point B is the position at MAX.
4 The position exactly between points A and
B is the optimum sensing position.
7
AUTOMATIC INTERFERENCE
PREVENTION FUNCTION
Optimum positio
n
2 sensors mounted closely together