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TL50 

Contrast sensor 

 

 
 

INSTRUCTION MANUAL 

 
 
 
 
 
 
 
 

CONTROLS 

OUT LED (yellow) 

The yellow LED indicates the output status. 

READY LED (green) 

During functioning, the green LED permanently ON 
indicates a normal operating condition; fast blinking 
indicates an output overload condition. 

DELAY LED (orange) 

The orange LED ON indicates the timing function 
activation on the digital output. 

MARK PUSH-BUTTON 

The mark detection procedure is activated by pressing 
MARK push-button. 

BKGD PUSH-BUTTON 

The background detection procedure is activated by 
pressing BKGD push-button. 

 

See the “SETTING” paragraph for setup procedure 
indications. 
 

INSTALLATION 

The sensor can be positioned using threaded M5 holes with max. 6 mm 
depth. 

Do not apply excessive torque when adjusting (max 2.2 Nm). 

 

The 

operating distance is measured starting from the front surface of the 

sensor optics. 
 
The reading direction can be changed inverting the cap and lens. 
Mark detection on a reflective surface is improved adjusting the beam 
direction to 5° … 20° from surface axis. 
 

 

 

CONNECTIONS 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

SETTING 

 

DETECTION (MARK-BACKGROUND) 

-

  Position mark in front of the sensor light spot and 

press MARK push-button until the READY LED 
(green) turns OFF. 

The sensor detects the mark alternating the red, 
green and blue emissions. 

Avoid mark movements during this phase. 

-  Position the background in front of the sensor light 

spot and press BKGD push-button; the sensor 
detects the mark alternating the red, green and 
blue emissions. Avoid background movements 
during this phase. 

 

The DARK/LIGHT operating mode is automatically 
selected by the sensor. 

Dark mark - light background = Dark mode. 

Light mark - dark background = Light mode. 

 

If the READY LED (green) is permanently ON, the 
detection is successful. 

If the LED blinks slowly, the detection has failed due 
to insufficient contrast. 

The sensor returns to the previous setting by pressing one of the two push-
buttons. 

 

 

DELAY SETTING 

The DELAY extends to 20ms the minimum duration of the active output 
allowing the slower interfacing systems to detect shorter pulses. 
The active delay is signalled by the corresponding orange LED ON. 
 
 
 
 
 
 
 
 
 
 

 

Delay activation 

Press MARK and BKGD push-buttons contemporaneously 
for 2 sec. until the DELAY LED turns ON. 

 

 

Delay deactivation 

Press MARK and BKGD push-buttons contemporaneously 
for 2 sec. until the DELAY LED turns OFF.

 

 
 
 
OUTPUT OVERLOAD 

The digital output overload is signalled by the rapid blinking of the READY 
LED. 
 
 
 
 

The sensors are NOT safety devices, and so MUST NOT be used in the safety control of the machines 

where installed. 

 
 
 
 

Datalogic S.r.l. 

Via S. Vitalino 13 - 40012 Calderara di Reno - Italy 
Tel: +39 051 3147011 - Fax: +39 051 3147205 - www.datalogic.com

 

 
Helpful links at www.datalogic.com: 

Contact Us,

 

Terms and Conditions,

 

Support

 
The warranty period for this product is 36 months. See General Terms and Conditions of Sales for 
further details. 
 

 

Under current Italian and European laws, Datalogic is not obliged to take care of product 
disposal at the end of its life. Datalogic recommends disposing of the product in compliance with 
local laws or contacting authorised waste collection centres. 

 
© 2007- 2017 Datalogic S.p.A. and/or its affiliates 

 ALL RIGHTS RESERVED. 

 Without limiting the 

rights under copyright, no part of this documentation may be reproduced, stored in or introduced into a 
retrieval system, or transmitted in any form or by any means, or for any purpose, without the express 
written permission of Datalogic S.p.A. and/or its affiliates. Datalogic and the Datalogic logo are registered 
trademarks of Datalogic S.p.A. in many countries, including the U.S.A. and the E.U. All other trademarks 
and brands are property of their respective owners. Datalogic reserves the right to make modifications 
and improvements without prior notification. 

 

826003273 Rev.D

 

DIMENSIONS 

 

TECHNICAL DATA 

Power supply: 

10…30 VDC limit values  - Class 2 (UL508) 

Ripple: 

2 Vpp max. 

Current consumption 

(output current excluded): 

50 mA max. @ 24Vcc 

Output: 

1 PNP output 1 NPN output 

Output current: 

100 mA max. 

Output saturation voltage: 

 2 V 

Response time: 

33 

Switching frequency: 

15 kHz 

Delay: 

0 / 20 ms selectable 

(default configuration without delay)

 

Dark/light selection 

automatic 

Indicators: 

OUT LED (yellow) / READY LED (green)/DELAY LED (orange) 

Push-buttons: 

MARK and BKGD push-buttons 

DARK/LIGHT selection: 

Automatic 

(default configuration LIGHT mode)

 

Operating temperature: 

-10 … 55 °C 

Storage temperature: 

-20 … 70 °C 

Dielectric strength: 

500 VAC 1 min., between electronics and housing 

Insulating resistance: 

>20 M

 500 Vdc, between electronics and housing 

Operating distance: 

9 mm 

Depth of field: 

 3 mm 

Minimum spot dimension: 

1.5x5 mm @ 9 mm 

Emission type: 

BLUE (465 nm) / GREEN (520 nm) / RED (630 nm) with automatic selection 

Ambient light rejection: 

According to EN 60947-5-2 

Vibrations: 

0.5 mm amplitude, 10 … 55 Hz frequency, for each axis (EN60068-2-6) 

Shock resistance: 

11 ms (30 G) 6 shock for each axis (EN60068-2-27) 

Housing material: 

ABS 

Lens material: 

PMMA 

Mechanical protection: 

IP67 

Connections: 

M12 4-pole connector 

Weight: 

90 g. max. 

AtEx 2014/34/EU: 

II 3G EX nA II T6 ; II 3D EX tD A22 IP67 T85°C 

ON

 

OUT with DELAY

 

OFF

 

20ms 20ms 

ON

 

OUT without DELAY

 

OFF

 

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