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SR21 SERIES

INSTRUCTION MANUAL

Slot sensor

CONTROL PANEL

BI-COLOUR LED

GREEN (READY): operative state indicator

RED (ERROR):

error indicator

AUTO SET PUSHBUTTON:

LED YELLOW (OUT):

automatic setting

output state indicator

DIMENSIONS

n°2 M4x8

7.5

Ø4.25

LOCK SCREW

97.5

NOTE

To install the sensor with 90° connector, unscrew the lock screw and

rotate the block counterclock-wise, when finished tighten the lock

screw completely.

M8 Connector

NPN

(WHITE)

10 ... 30 Vdc

(BROWN)

Power supply:

Ripple:

Consumption

(output current excluded):

Output:

Output current:

Saturation voltage:

Response time:

Switching frequency:

T rise:

T fall:

Humidity:

Indicators:

Keyboard:

Retention data:

Operating temperature:

Storage temperature:

Electrical shock protection:

Emission frequency:

Emission type:

Ambient light rejection:

7.5

Slot width:

Detectable object limits:

Housing material:

Lens material:

Protection class:

Connections:

Weight:

CONNECTIONS

PNP

(BLACK)

(the connector is viewed from

the external side of the housing)

0 V

(BLUE)

TECHNICAL DATA

10 ... 30 Vdc; protected

against inversion of polarity

2 Vpp max.

55 mA max.

NPN and PNP on different pins;

pull up/down resistance = 10KΩ

100 mA max.

with short-circuit protection

1 V max. with NPN

2 V max. with PNP

(values at peak output current)

66 µs max. (SR21-AH/AR/AV)

33 µs max. (SR21-AS)

7.5 kHz max. (SR21-AH/AR/AV)

15 kHz max. (SR21-AS)

1 µs (NPN; R = 1 KΩ)

120 µs (NPN; C = 4,7 nF)

internal pull up 10KΩ

1 µs (PNP; R = 1 KΩ)

120 µs (PNP; C = 4,7 nF)

internal pull down 10KΩ

35 ... 85% rH non condensing

Bi-colour LED READY/ERROR

(green/red)

OUT LED (yellow)

AUTO SET pushbutton

EEPROM non-volatile memory

0 ... 55°C

-20 ... 70°C

Class 1

20 Khz ±10% modulated light

880 nm infrared (SR21-AR/AV/AS)

red/green visible (SR21-AH)

according to EN 60947-5-2

2 mm

max. thickness 1.5mm

min. width 1mm (SR21-AH/AR)

min. width 0.5mm (SR21-AV/AS)

ZAMA

Glass

IP65

M8 4 pole connector

115 g.

SETTING

Sensor setting

1) Place the label or the mark to read in the sensor slot using the

reference marks on the tip for alignment.

2) Press and hold the AUTO SET pushbutton till the green READY LED

turns OFF, this starts the acquisition phase of the object to read

which must not be removed till the green LED lights on again.

3) When the green READY LED blinks, put the label support or the

mark background in the sensor slot using the reference marks on the

tip for alignment.

4) Press and hold the AUTO SET pushbutton till green READY LED

turns OFF, this starts the acquisition phase of the object to read

which must not be removed till the green LED blinks.

5) The green READY LED continuously ON indicates the setting is

completed and the sensor is ready.

Error messages

• Alternate blinking of the green READY LED and the red ERROR

LED indicates that the contrast between the label/support or

mark/background is insufficient, or that the setting is incorrect.

Repeat the sensor setting operation.

• The red ERROR LED blinking indicates the output is in protection

mode because of a short circuit. As soon as the cause of the short

circuit is removed, the output reactivates and red LED turns OFF.

• The red ERROR LED continuously ON indicates the sensor is

damaged and must be replaced.

DECLARATION OF CONFORMITY

We DATASENSOR S.p.A. declare under our sole responsibility that these products are

conform to the 2004/108 CEE, 2006/25/CE Directives and successive amendments.

WARRANTY

DATASENSOR S.p.A. warrants its products to be free from defects.

DATASENSOR S.p.A. will repair or replace, free of charge, any product found to be defective

during the warranty period of 36 months from the manufacturing date.

This warranty does not cover damage or liability deriving from the improper application of

DATASENSOR products.

DATASENSOR S.p.A. Via Lavino 265

40050 Monte S. Pietro - Bologna - Italy

Tel: +39 051 6765611

Fax: +39 051 6759324

http://www.datasensor.com

e-mail: [email protected]

DATASENSOR S.p.A. cares for the environment: 100% recycled paper.

DATASENSOR S.p.A. reserves the right to make modifications and improvements

without prior notification.

826540047 Rev.J