S8-PR…T
Polarised retroreflex for transparents
S8-PR…W
Contrast sensor
INSTRUCTION MANUAL
CONTROLS
OUTPUT LED (yellow)
The yellow LED indicates the output status.
READY LED (green) (S8W)
The green LED ON indicates normal functioning.
POWER ON LED (green) (S8T)
The green LED ON indicates the powering status.
SET PUSH-BUTTON (S8W)
The acquisition procedure is activated by pressing the SET push-button.
The control obtained with the SET push-button can be made externally with
the REMOTE input.
DELAY TRIMMER (S8W)
The digital output’s delay is selected/deselected by a monoturn trimmer.
SENSITIVITY TRIMMER (ADJ.) (S8T)
The sensitivity and thus the operating distance are adjusted by a monoturn
trimmer.
LIGHT/DARK TRIMMER (S8T)
The light/dark mode is selected by a monoturn trimmer.
Please refer to “SETTING” paragraph for the correct use procedures.
WARNING:
the maximum mechanical rotation range of the trimmer is 240°.
Do not force over of the maximum and minimum positions.
INSTALLATION
The sensor can be positioned by means of the two
housing holes using two screws (M3x18 or longer,
0.8Nm maximum tightening torque) with washers.
Various orientable fixing brackets to ease the sensor
positioning are available (please refer to the accessories
listed in the general catalogue).
The operating distance is measured
from the front surface of the sensor
optics.
S8W - Mark detection on a reflective
surface is improved adjusting the
beam direction to 5° … 20° from surface axis.
CONNECTIONS
M8 connector
S8W
S8T
Pig-tail with M12 connector
TECHNICAL DATA
S8W S8T
Power supply:
12 … 30 VDC (Class 2 UL508)
(reverse polarity protected)
Ripple:
2 Vpp max.
Consumption
(output current excluded):
30 mA max
15 mA max
Outputs / Alarm output only for S8T:
PNP or NPN N.O.; 30 VDC max.
(short-circuit protection)
Pull-down/up resistance = 47 K
PNP or NPN N.O.; 30 VDC max.
(short-circuit protection)
Output current:
100 mA (overload protection)
Output saturation voltage:
2 V
Response time:
50
s
250 us
Switching frequency:
10 kHz
2 KHz
Emission type:
blue ( 465 nm) / green (520 nm) / red (630 nm)
with automatic selection
red (660 nm)
Spot dimension:
3x1 mm
2
-
Operating distance (typical values):
9 mm
0.8 m (EG2); 1 m (EG1) on R2 reflector
Depth of field:
2 mm
-
LIGHT/DARK selection:
Automatic
Mono-turn trimmer
Delay OFF 20msec selection:
Mono-turn DELAY trimmer
-
Indicators:
OUTPUT LED (yellow) / READY LED (green)
OUTPUT LED (yellow) / READY LED (green)
Operating temperature:
-10 … 55 °C
Storage temperature:
-20 … 70 °C
Dielectric strength:
: 1500 VAC 1 min. between electronics and housing
Insulating resistance:
>20 M
500 Vdc between electronics and housing
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 shocks for each axis (EN60068-2-27)
Housing material:
ABS
Lens material:
Window in glass; lens in PC
Mechanical protection:
IP67
Connections:
M8 4-pole connector / 150 mm
4 mm cable with M12 4-pole connector (pig-tail)
Weight:
12 g. max. connector version / 50 g. pig-tail version
S8W SETTING
ACQUISITION
S8T SETTING
SENSITIVITY ADJUSTMENT
Mark detection
The DARK/LIGHT mode is automatically
selected by the sensor.
Place mark in front of the sensor spot and
press SET until the green READY LED
turns off.
The sensor functions alternating red, green
and blue emissions.
Do not move the mark during this phase.
Alignment
:
- Position and align the sensor and reflector
on opposite side at the desired distance.
- Rotate sensitivity adjustment trimmer (ADJ.)
to maximum point (clockwise direction).
- Move the sensor vertically and horizontally
to determine the powering on and powering
off points of the yellow LED (OUT) and fix
the sensor in the middle of these two points.
- To detect very small objects, reduce the
sensitivity using the specific trimmer (
if
necessary
). Repeat procedure reducing
progressively the sensitivity to improve
alignment.
Background detection
Place background in front of the sensor spot
and press SET again.
The sensor functions alternating red, green
and blue emissions.
Do not move the background during this
phase.
Control
:
- Enter object laterally in the detection area
and check that the yellow LED turns ON (in
dark mode).
- remove object and check that the yellow
LED turns OFF immediately (in dark mode).
If the READY LED turns permanently ON the acquisition was successful. If the
LED blinks slowly the acquisition failed due to insufficient contrast. Press SET
and the sensor returns to the previous setting. Repeat procedure from the
beginning.
DELAY SETTING
The delay extends the minimum output activation
to 20 ms allowing the slower interface systems to
detect also shorter pulses.
Delay activation
-
Rotate trimmer in an anti-clockwise direction.
Delay deactivation
-
Rotate trimmer in a clockwise direction.
LIGHT/DARK MODE SETTING
Light mode setting
Rotate trimmer in an anti-clockwise direction to set
the LIGHT mode (output ON with the reflector).
Dark mode setting
Rotate trimmer in a clockwise direction to set the
DARK mode (output ON in presence of the object).
DIMENSIONS
5.3
3.5
11
Receiver
Emitter
14
25
7
9.25
0.9
Ø3.2 n°2
20
2.6
3.5
42
9.4
M8x1
10
mm
5.
4
Ø4
47 max.
M12
Ø14.2
150
PIG-TAIL
VERSION
27.5
15
S8W
S8T
OTHER FUNCTIONS
S8W – REMOTE input
The REMOTE signal carries-out acquisition functions without using the SET
push-button.
The REMOTE wire connected to +Vdc is equal to pressing the SET pus-
button, connected to GND or not connected is equal to not pressing the SET
push-button.
S8T – ALARM output
The alarm output is active (ON) when the received signal remains without
safety margin for 0.5 second (30% respect to output switching value).
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.
© 2008 - 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.
826003725 Rev. H
mark acquisition
V
DC
REMOTE
GND
>1s
background acquisition
ACQ.
