CONNECTIONS Static setting (MANUAL)

Recommended in presence of transparent irregular profiles and requires a separate acquisition of the
M8 connector label and of the support with manual positioning.
The best result is obtained acquiring the most transparent area of the label and the most opaque area of
the support.
Setting steps:
1) With LED solidly ON, position the label in the sensor slot if the output has to be activated in
correspondence of the label (NORMAL output), or position the support if the output has to be
SR21-IR / SR21-RG activated in correspondence of the support (INVERTED output). Use the specific references for
centering.
INSTRUCTION MANUAL 2) Briefly press AUTO-SET. The green and yellow LEDs turn OFF. The object acquisition phase begins.
The object must not be moved until the green LED blinks rapidly.
3) While the green LED continues to blink rapidly, position the second object (support or label) in the
sensor slot using the
CONTROLS specific references for centering.
TECHNICAL DATA 4) Briefly press AUTO-SET. The rapidly blinking green LED turns OFF. The detection of the second
OUTPUT LED (YELLOW)
object begins. The
The yellow LED ON indicates output activation.
Power supply: 10 … 30 Vdc; object must not be moved until the green LED turns solidly ON.
READY/ERROR LED (RED/GREEN) reverse polarity protection 5) The green READY LED solidly ON indicates that the sensor has detected a sufficient contrast
The green LED continuously ON indicates a normal operating condition. Refer to the “SETTING” between the label and the support. The sensor can function with the new setting. A different indication
Ripple: 2 Vpp max.
paragraph for the correct setting phase indications. signals an error due to insufficient contrast.
Consumption
The red LED continuously ON or blinking indicates an error status. 55 mA max.
(output current excluded): Dynamic setting with NORMAL or INVERTED output
Refer to “ERROR INDICATIONS” paragraph for the correct indications during the different functioning
phases. Outputs: NPN and PNP on different poles; The programming has to be carried-out during normal movement of the label ribbon inside the sensor
pull up/down resistance= 33 K slot. Recommended for labels and supports with a rather uniform transparency degree.
AUTO-SET PUSH-BUTTON Output current: 100 mA max.
Activates the different setting modes using the READY/ERROR LED indications. Setting steps:
short-circuit protection
The pressure on the AUTO-SET push-button can be “brief” when pressed for at least 3 sec., or “long” 1) With green LED continuously ON, start the movement of the label ribbon in the sensor slot.
Output saturation voltage: 2 V max. with NPN
when pressed longer. 2) Press AUTO-SET until the green LED blink slowly.
2 V max. with PNP
Refer to “SETTING” paragraph for operating mode indications.
(values at maximum output current) 3) Release the push-button. The sensor acquires the transparency degree of both the moving labels and
Response time: 20 µs max. support in approximately 2 sec. cycles. Leave the sensor in this acquisition phase for the time
Switching frequency: 25 kHz max. necessary to guarantee the detection of the major number of points possible. The duration depends
T rise: 1 µs (NPN; R = 1 K) on the ribbon speed and dimensions of the labels and support.
120 µs (NPN; C = 4.7 nF) 4) Setting with NORMAL output: briefly press AUTO-SET. The green READY LED continuously ON
33 K pull-up internal resistance indicates that the sensor has detected a sufficient contrast between the label and support. The sensor
T fall: begins to function with the new setting and the output is activated in correspondence of the label. A
1 µs (PNP; R = 1 K)
different indication signals an error due to insufficient contrast.
120 µs (PNP; C = 4.7 nF)
pull-down internal resistance 33 K 5) Setting with INVERTED output: press AUTO-SET until the green LED blinks rapidly three times.
Release the pus-button. The green READY LED continuously ON indicates that the sensor has
Humidity: 35 … 85% rH non-condensing
detected a sufficient contrast between the label and the support. The sensor begins to function wth
Indicators: Bicolour READY/ERROR LED (green/red) the new setting and the output is activated in correspondence of the support. A different indication
OUT LED (yellow) signals an error due to insufficient contrast.
Setting: AUTO-SET push-button
Data retention: EEPROM non volatile memory
Operating temperature: -20 … 60°C ERROR INDICATIONS
Storage temperature: -20 … 70°C
Emssion frequency: Modulated light at 50 kHz 10% READY/ERROR LED blinking with slow red and green alternation: indicates that the setting (static or
Emission type: infrared 880 nm dynamic) has failed due to insufficient transparency or contrast between label and support. In this case
visible red/green (633 nm/570 nm) the sensor maintains the previous setting and returns to normal functioning pressing and releasing
AUTO-SET.
Ambient light rejection: EN 60947-5-2
Slot width: 2 mm READY/ERROR LED red blinking at average speed: during normal functioning and only with active
output, indicates a short-circuit or overload of the outputs or insufficient power supply. The indication
Detectable object limits: Min. 0.5mm width
disappears when the cause is removed.
Housing material: ZAMA
DIMENSIONS Lens material: glass
Mechanical protection: IP65 PUSH-BUTTON BLOCKING AND UNBLOCKING
16 Connections: M8 4-pole connector
Weight: 115 g. The push-button can be blocked to avoid accidental movements during normal sensor functioning. The
block can be maintained even after the turning OFF and turning ON of the sensor. The blocking and
unblocking operations are given below:
POWER SUPPLY

OUTPUT
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1) With sensor turned OFF press AUTO-SET

SETTING
2) Re-power sensor keeping the push-button pressed. The sensor inverts the block status: if the push-
n°2 M4x8 Static setting (MANUAL) button was unblocked the bock is activated and the red LED is continuously ON, if the push-button
7.5 90 Recommended in presence of transparent irregular profiles and requires a separate acquisition of the was blocked the sensor unblocks it and at sensor re-powering the green LED is continuously ON.
label and of the support with manual positioning. 3) The sensor begins to operate with normal functioning. The setting can not be modified if the push-
Ø4.25 20
The best result is obtained acquiring the most transparent area of the label and the most opaque area of button is blocked.
the support.
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Setting steps:
2

DECLARATION OF CONFORMITY
26
18

1) With LED continuously ON, position the label in the sensor slot if the output has to be activated in We DATALOGIC AUTOMATION declare under our sole responsibility that these products are conform to the 2004/108/CE and
9

correspondence of the label (NORMAL output), or position the support if the output has to be successive amendments.
8

activated in correspondence of the support (INVERTED output). Use the specific references for WARRANTY
4 18 centring. DATALOGIC AUTOMATION warrants its products to be free from defects.
50
4

DATALOGIC AUTOMATION will repair or replace, free of charge, any product found to be defective during the warranty period of 36
26 2) Briefly press AUTO-SET. The green and yellow LEDs turn OFF. The object acquisition phase begins. months from the manufacturing date.
7.5 The object must not be moved until the green LED doesn’t blink rapidly. This warranty does not cover damage or liability deriving from the improper application of DATALOGIC AUTOMATION products.
LOCK SCREW PUSH-BUTTON
3) When the green LED blinks postion the second object (support or label) in the sensor slot using the
mm specific references for centring.
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4) Briefly press AUTO-SET. The green LED turns OFF. The detection of the second object begins. The
M8

object must not be moved until the green LED doesn’t turn ON continuously. DATALOGIC AUTOMATION cares for the environment: 100% recycled paper.
DATALOGIC AUTOMATION reserves the right to make modifications and improvements without prior notification.
LEDS 5) The green READY LED continuously ON indicates that the sensor has detected a sufficient contrast 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.
97.5 between the label and the support. The sensor can function with the new setting. A different indication
signals an error due to insufficient contrast. 826003051 Rev.C © Copyright Datalogic 2007-2009
NOTE
To install the sensor using the connector positioned at 90°, unscrew the blocking screw and rotate the
fixing block in an anti-clockwise direction. At the end rescrew the blocking screw.

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