SR21 SERIES
INSTRUCTION MANUAL
Slot sensor
CONTROL PANEL
AUTO SET PUSHBUTTON:
automatic setting
BI-COLOUR LED
GREEN (READY): operative state indicator
RED (ERROR):
error indicator
LED YELLOW (OUT):
output state indicator
DIMENSIONS
LOCK SCREW
2
12
9
9
20
6
50
4
26
18
4
97.5
M8
7.5
90
7.5
18
n°2 M4x8
Ø4.25
8
20
26
16
mm
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.
CONNECTIONS
M8 Connector
10 … 30 Vdc
+
-
PNP
0 V
2
1
4
3
NPN
(WHITE)
(BROWN)
(BLUE)
(BLACK)
(the connector is viewed from
the external side of the housing)
TECHNICAL DATA
Power supply:
10 … 30 Vdc; protected
against inversion of polarity
Ripple:
2 Vpp max.
Consumption
(output current excluded):
55 mA max.
Output:
NPN and PNP on different pins;
pull up/down resistance = 10K
Ω
Output current:
100 mA max.
with short-circuit protection
Saturation voltage:
1 V max. with NPN
2 V max. with PNP
(values at peak output current)
Response time:
66 µs max. (SR21-AH/AR/AV)
33 µs max. (SR21-AS)
Switching frequency:
7.5 kHz max. (SR21-AH/AR/AV)
15 kHz max. (SR21-AS)
T rise:
1 µs (NPN; R = 1 K
Ω
)
120 µs (NPN; C = 4,7 nF)
internal pull up 10K
Ω
T fall:
1 µs (PNP; R = 1 K
Ω
)
120 µs (PNP; C = 4,7 nF)
internal pull down 10K
Ω
Humidity:
35 … 85% rH non condensing
Indicators:
Bi-colour LED READY/ERROR
(green/red)
OUT LED (yellow)
Keyboard:
AUTO SET pushbutton
Retention data:
EEPROM non-volatile memory
Operating temperature:
0 … 55°C
Storage temperature:
-20 … 70°C
Electrical shock protection:
Class 1
Emission frequency:
20 Khz
±
10% modulated light
Emission type:
880 nm infrared (SR21-AR/AV/AS)
red/green visible (SR21-AH)
Ambient light rejection:
according to EN 60947-5-2
Slot width:
2 mm
Detectable object limits:
max. thickness 1.5mm
min. width 1mm (SR21-AH/AR)
min. width 0.5mm (SR21-AV/AS)
Housing material:
ZAMA
Lens material:
Glass
Protection class:
IP65
Connections:
M8 4 pole connector
Weight: 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
