Panasonic EX-20 Series Instruction Manual - Sentronic
2
EX-24
EX-22
, EX-26
, EX-28
, EX-29
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”!
Relation between output and indicators
= lit, = unlit
Procedure
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.
Use the accessory screwdriver and turn the adjuster slowly. Using
excessive force will damage the adjuster.
When using EX-22
(-PN) at a sensing range of 50mm or less, the
sensitivity adjustment range is extremely narrow.
No.
Part
Description
1
Receiver
2
Stability indicator
(green)
Lit when detection is stable accord-
ing to the parameters set.
3
Operation indicator
(orange)
Lit when the output is ON.
4
Emitter
No.
Part
Description
1
Emitter
2
Receiver
3
Stability indicator
(green)
Lit when detection is stable accord-
ing to the parameters set.
4
Operation indicator
(orange)
Lit when the output is ON.
5
Sensitivity adjuster
Sensing range increased when
turned clockwise.
See “SENSITIVITY ADJUSTMENT”
on page 2.
3
SENSITIVITY ADJUSTMENT
Sensor type
Light received
condition
Dark condition
Thru-beam
Retroreflective
1
2
3
4
MAX
MAX
1
2
3
4
5
Emitter
Receiver
Emitter
Receiver
Sensing object
Sensor
Reflector
Sensor
Reflector
Sensing object
Diffuse
reflective
Convergent
reflective,
Narrow view
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
Step
Sensitivity
adjuster
Description
1
Turn the sensitivity adjuster fully counter-
clockwise to the minimum sensitivity position
(
●
).
2
In the “light received” condition, turn the sen-
sitivity 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.
Sensor type
Light received
condition
Dark condition
Sensor
Sensing object
Sensor
Sensor
Sensing object
Sensor
Max
Max
Max
Max
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CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
mailbox@sentronic.com
www.sentronic.com
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