Panasonic EX-20 Series Instruction Manual

INSTRUCTION MANUAL
Photoelectric Sensor
EX-20 Series
Thank you for purchasing products from Panasonic Electric Works SUNX
Co., Ltd. Please read this Instruction Manual carefully and thoroughly for
the correct and optimum use of this product. Kindly keep this manual in a
convenient place for quick reference.
• Never use this product as a sensing device for personnel protection.
• In case of using sensing devices for personnel protection, use
products which meet laws and standards, such as OSHA, ANSI or IEC
etc., for personnel protection applicable in each region or country.
1 CAUTIONS
 This product has been developed / produced for industrial use only.
2
 A thin 0.1mm cable is used for this product. Do not use excessive force
when pulling on the cable: it may cause cable to break.
 EX-24(-PN) types are not incorporated with a sensitivity adjuster.
Maintain adequate distance from reflective objects in the background,
e.g. conveyors, since they may adversely effect sensing.
 If a reflective object is present in the background, the sensing of
EX-28A(-PN) may be affected. When setting up the sensor, confirm
that the reflective object has no effect. If the reflective object affects
sensing, removing the reflective object, color it black, or take other
appropriate measures.
 If sensors are mounted close together and the ambient temperature is
near the maximum rated value, provide for enough heat radiation /
ventilation.
 Make sure that the power supply is off while wiring.
 Incorrect wiring will damage the sensor.
 Verify that the supply voltage including the ripple is within the rating.
Verify that the supply voltage variation is within the rating.
 If power is supplied from a commercial switching regulator, ensure that
the frame ground (F.G.) terminal of the power supply is connected to an
actual ground.
In case noise generating equipment (switching regulator, inverter motor,

etc.) is used in the vicinity of this product, connect the frame ground
(F.G.) terminal of the equipment to an actual ground.
 Do not run the wires together with high-voltage lines or power lines or put
them in the same raceway. This can cause malfunction due to induction.
 You can extend the cable up to 50m max. with 0.3mm
both emitter and receiver (thru-beam types). However, in order to reduce
noise, make the wiring as short as possible.
 Do not use during the initial transient time (0.5s) after the power supply is
switched on.
 Ensure that the sensor is not directly exposed to the following light
sources as they may adversely effect sensing performance: fluorescent
light from a rapid-starter lamp, a high frequency lighting device, sunlight
etc.
 Do not apply stress directly to the sensor cable joint by forcibly bending
or pulling.
 This sensor is suitable for indoor use only.
 Avoid dust, dirt and steam. Do not use this sensor in places having
excessive vapor, dust, etc., or where it may come in direct contact with
water or corrosive gas.
 Take care that the sensor does not come in contact with oil, grease,
organic solvents such as thinner, etc., strong acid, or alkalines.
SEN TRONIC
AG
Produkte, Support und Service
Ultra-compact type
MEUEN-EX20 V2.0
WARNING
2
or more cable for
Rugghölzli 2
CH - 5453 Busslingen
2 PART DESCRIPTION
EX-21
2 3
1
No. Part
1 Beam axis
2 Stability indicator
(green)
3 Operation indicator
(orange)
EX-23
2
3
L
1
D
No. Part
1 Beam axis
2 Stability indicator
(green)
3 Operation indicator
(orange)
4 Operation mode
switch
5 Sensitivity adjuster
1
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
Description
Receiver only.
Lit when detection is stable according
to the parameters set.
Receiver only.
Lit when the output is ON.
4
5
Description
Receiver only.
Lit when detection is stable according
to the parameters set.
Receiver only.
Lit when the output is ON.
Receiver only.
• L: Light-ON
Turn the operation mode
switch fully clockwise until it
stops.
• D: Dark-ON
Turn the operation mode
switch fully
counterclockwise until it
stops.
Emitter only.
Sensing range increased when turned
clockwise.
See "SENSITIVITY ADJUSTMENT" on
page 2.
mailbox@sentronic.com
www.sentronic.com
L
D
L
D