English

Photoelectric proximity sensor

Operating instructions

Safety notes

• Read the operating instructions before commissioning.

• Connection, mounting, and setting may only be performed by trained

specialists.

• Not a safety component in accordance with the EU Machinery Directive.

• UL: Only for use in applications in accordance with NFPA 79. Adapters

(referred to as “sensor” in the following) for the optical, non-contact

detection of objects, animals, and persons. If the product is used for any

other purpose or modied in any way, any warranty claim against SICK AG

shall become void.

Photoelectric proximity sensor with background suppression.

The WTB27-3R /- 3S sensor is a class A product. In household environ-

ments, devices of this kind can cause radio interference. The user should

take appropriate measures as required.

Commissioning

1 Check the application conditions: Adjust the sensing range and dis-

The minimum distance (= y) for background suppression can be

determined from diagram [H] as follows:

Example: x = 800 mm, y = 10 % → 10 % of 800 mm = 80 mm.

That is, the background is suppressed at a distance of > 880 mm from

the sensor.

2 Mount the sensor using a suitable mounting bracket (see the SICK

range of accessories).

Note the sensor's maximum permissible tightening torque of 1.3 Nm.

Note the preferred direction of the object relative to the sensor.

3 The sensors must be connected in a voltage-free state. The information

Only apply voltage / switch on the power supply once all electrical

connections have been completed. The green LED indicator lights up

on the sensor.

Explanations of the connection graphic (graphic B):

Switching outputs Q and / Q (according to graphic B):

WTB27-3P / -3F (PNP: load -> M)

WTB27-3N / -3E (NPN: load -> L+)

WTB27-3R / -3S (relay output)

Alarm / Health = alarm output (see Additional functions)

TE / Test = test input (see Additional functions)

using an object with a low remission.

5 Sensor which it is not possible to set for the WTB27-3xxxx0: The sensor

is adjusted and ready for operation.

Refer to graphics C and G to check the function. If the switching output

fails to behave in accordance with graphic C, check application condi-

tions. See section Fault diagnosis.

Sensor with WTB27-3xxxx1 potentiometer:

The sensing range is adjusted with the potentiometer (type: 270°).

Clockwise rotation: sensing range increased; counterclockwise

rotation: sensing range reduced. We recommend placing the switching

not operate the teach-in button using sharp objects. We recommend

placing the switching state in the object, e. g., see graphic F. Once the

sensing range has been adjusted, the object is removed from the path

of the beam, which causes the background to be suppressed and the

switching output to change (see graphic C).

The sensor is adjusted and ready for operation. Refer to graphics C

and G to check the function. If the switching output fails to behave in

accordance with graphic C, check application conditions.

See section Fault diagnosis.

Additional functions

in the good state: LOW (0), if excessively contaminated HIGH (1).

Health output:

in the good state: HIGH (1), if excessively contaminated or in the event of

cable interruption LOW (0).

Time types: WTB27-3 F, -3E, -3R: t0 = no time delay, t1 = time delay, t2

= time delay; for -3R: 0 = relay deactivated, 1 = relay active. Time delay

selector switch can be set on the device according to A.

Time stages: WTB27-3 IR F / -3E:

< 0.5 s: 0.02 ... 0.5 s or > 0.5 s: 0.5 ... 10 s can be set.

WTB27-3 IR R: 0.5 ... 10 s can be set

The send LED is shut down or no object being detected is simulated. Refer

to Graphics C and G to check the function. If the switching output fails to

behave in accordance with Graphic C, check application conditions.

See section Fault diagnosis.

Devices with special features

WTB27-3S1511S01, WTB27-3P2411S12, WTB27-3P2413S14:

for extreme shock loads.

WTB27-3V2411S02: with alarm output at pin 2 and Q / at pin 4.

WTB27-3P1111S06: sensing range can be set between approx.

40 … 500 mm. The detection of objects is heavily restricted in the

I contatti di uscita relè sono separati dalla tensione di alimentazione

da un isolamento base di 3 mm.

Oggetto con il 90% di remissione (riferito al bianco standard DIN 5033)

Valori limite; ondulazione residua max. 5 V

,

corrente nominale connettore maschio: I

Con rapporto chiaro / scuro 1:1

Durata segnale con carico ohmico

Tensione nominale di isolamento U

= CA 250 V, categoria di sovratensione II

corriente nominal del conector macho: I

Sensing range Schaltabstand Portée Distância de comutação 100 ... 1,600 mm 100 ... 1,600 mm 100 ... 1,600 mm 100 ... 1,600 mm

Sensing range max. Schaltabstand max. Portée max. Distância de comutação max. 30 ... 1,600 mm

30 ... 1,600 mm

Light spot diameter / distance Lichtfleckdurchmesser / Entfernung Diamètre spot / distance Diâmetro do ponto de luz / distância 25 mm / 800 mm 25 mm / 800 mm 25 mm / 800 mm 25 mm / 800 mm

Supply voltage U

Tension d'alimentation U

Tensão de alimentação U

10 ... 30 V DC

10 ... 30 V DC

Enclosure rating Schutzart Indice de protection Tipo de proteção IP 67 IP 65 IP 65 IP 66, IP 67

Protection class Schutzklasse Classe de protection Classe de proteção

Circuit protection Schutzschaltungen Protections électriques Circuitos de proteção A, B, C

A, B, C

Ambient operating temperature Betriebsumgebungstemperatur Température de service Temperatura ambiente de funcionamento -40 °C ... +60 °C -40 °C ... +60 °C -40 °C ... +60 °C

-40 °C ... +60 °C

male connector rated current: I

= 4A

Limit values; male connector rated current: I

Utilization category: AC-15. DC-13 (EN 60947-1)

With light / dark ratio 1:1

Rated insulation voltage U

A = U

B = inputs and output reverse-polarity protected

C = Interference suppression

Nennstrom Stecker: I

=4 A

B = Ein- und Ausgänge verpolsicher

C = Störimpulsunterdrückung

,

4A @ 250V AC, resistive (NO)

3A @ 250V AC, resistive (NC)

4A @ 24V DC, NO, general use

3A @ 24V DC, NC, general use

1 Standard direction of the material being detected /

Vorzugsrichtung

2 Optical axis, sender /

Optikachse Sender

3 Optical axis, receiver /

Optikachse Empfänger

4 Mounting hole Ø 5.2 mm (0.20) /