SMART-SCAN T2A Series User manual

T2A SERIES
SAFETY LIGHT CURTAINS
INSTALLATION GUIDE

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 2 Date: 27 November, 2017
SMARTSCAN TW Ltd
2F, No. 5, 10th Road, Taichung Industrial park,
Taichung City, Taiwan, R.O.C.
TEL: 886 - 4 - 23598885
FAX: 886 - 4 - 23599423
Important!
Failure to read and follow the instructions provided on the Installation Sheet and
Installation Guide can lead to the incorrect application or use of the T2A series safety light
curtain. This could lead to personal injury and damage to equipment. All applicable
machine safety standards and regulations should be taken into account when installing
the T2A series safety light curtain or any machine safety product.
The Installation Sheet and Installation Guide can be downloaded from our web site at
www.smartscan.com.tw
The T2A series Safety Light Curtain Installation Guide (CD1008A) is subject to change
without notice. SMARTSCAN TW Ltd shall not be held responsible for technical errors,
editorial errors or omissions contained herein, nor for incidental or consequential
damages resulting from the use of this material.
© 2016 SMARTSCAN TW Ltd. All Rights Reserved. Unless explicitly stated
otherwise, all rights including those in copyright in the content of this document are owned
by or controlled for these purposes by SMARTSCAN TW Ltd.
Except as otherwise expressly permitted under copyright law or SMARTSCAN TW Ltd,
reproduction of the document or alteration of this document may not be carried out in any
way without first obtaining SMARTSCAN TW Ltd's written permission.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 3 Date: 27 November, 2017
Contents:
Figure A – Unpacking .....................................................................................................................................4
Figure B – Mounting Information ..................................................................................................................5
Figure C – Dimensional Information ..............................................................................................................6
Figure D – Operating Requirements ..............................................................................................................9
Figure E – Important Installation Considerations ........................................................................................11
Figure F - Electrical Connections..................................................................................................................13
Power Supply .......................................................................................................................................14
Only Automatic Reset mode................................................................................................................14
Safety Outputs OSSD1 and OSSD2.......................................................................................................15
Communication Link ........................................................................................ 錯誤! 尚未定義書籤。
Figure G,I – Status and Diagnostic Indication ..............................................................................................16
Receiver (RX) Status Indicators ............................................................................................................17
Emitter (TX) Status Indicators ..............................................................................................................18
Receiver (RX) Diagnostic Indicators (S1, S2 LED) .................................................................................18
Figure H – Identification Labels ...................................................................................................................20
Figure J – Test and Maintenance .................................................................................................................22
Testing the safety light curtain with the test piece..............................................................................22
Maintenance........................................................................................................................................24
Figure K – Operation Cycle...........................................................................................................................25
Figure L – Product Return Procedure...........................................................................................................26
Figure M – Model List ..................................................................................................................................27
Figure N – Declaration of Conformity..........................................................................................................35
Figure O – Glossary of Words and Language Translation ............................................................................38
Appendix 1 – Important Safety Information................................................................................................39
Appendix 2 - Certifications ..........................................................................................................................40
Appendix 3 - Mirrors ....................................................................................................................................41
Appendix 4 – Specification Table .................................................................................................................45
Notes............................................................................................................................................................47

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 4 Date: 27 November, 2017
T2A Series (Model No. T2A-xxx) Safety Light Curtain
Installation Sheet (CD1008A/211117)
Figure A – Unpacking
Remove all packaging material and retain it
Locate and keep the delivery note
Inspect all items for transit damage
Match goods supplied to those specified on the delivery note
Keep the Installation Sheet in a safe place
Each T2A series supplied would normally include:
Safety Light curtain
Test piece
Installation sheet
Service questionnaire form
Storage requirements:
Humidity - <95%
Temperature range between –20°C and +70°C

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 5 Date: 27 November, 2017
Figure B – Mounting Information
The T2A series comes with mounting brackets as standard. The mounting brackets are located
at the ends of the safety light curtain as shown above. The mounting bracket may be fixed at 90
degrees, with a +/-5˚ adjustment.
Use 4mm bolts for mounting and ensure they are fixed so as to prevent any movement or
loosening of the safety light curtain.
The T2A series used M12 cable connectors. Both the transmitter (Tx) and receiver (Rx) units
come complete with 3m cables attached. (Note: Option for 5m, 10m, 15m, 20m cables.)
Transmitter = 4 core cable.
Receiver = 5 core cable.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 6 Date: 27 November, 2017
Figure C – Dimensional Information
Figure C describes important parameters associated with the safety light curtain such as
detection zone width (DZ).
T2A series
T2B series
T2C series
Measurements are shown for the safety light curtain’s overall length (including mounting
brackets), fixing centres and detection zone width.
The detection zone width (DZ) or protected height is needed to select the appropriate length to
cover the access area.
The light curtain’s dimensions including the mounting bracket are overall length (L) x 30mm width
x 30mm depth.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 7 Date: 27 November, 2017
The overall length (L), mounting centres (CTR) and detection zone width (DZ) in millimeters for
each individual model is listed in Figure M.
T2A series T2B series

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 8 Date: 27 November, 2017
T2C series

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 9 Date: 27 November, 2017
Figure D – Operating Requirements
Humidity <95%
Temperature range between 0°C and +50°C
Vibration: Frequency <55Hz Max. Movement <0.35mm
Do not use equipment in explosive atmospheres (contact the manufacturer for further
advice).
Detection Zone width (DZ)
The detection zone width or protected height must be of a suitable size for each application to
prevent personnel access to the danger area. This can be over, under or around the light
curtains detection zone.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 10 Date: 27 November, 2017
Object Detection Capability (ODC)
The minimum size of object guaranteed to be detected when placed in the light curtain’s infrared
sensing field. A test piece of appropriate size is provided to test that the light curtain object
detection capability is within the parameter specified for the particular model number.
Transparent objects are not detected.
Range
This is the maximum scanning range of the light curtain between the Transmitter (TX) head and
Receiver (RX) head. Ensure the light curtain is capable of satisfying the range requirement for
the particular application it is being used for.
Reset Location
Reset devices must be located such that the danger area can be seen to be clear of persons
before the system is activated. The reset device should not be accessible from inside the
danger area.
Environmental factors can affect the operation of a safety light curtain and proper consideration
should be taken into account for mounting a system where fog, rain, smoke, dust, large
temperature fluctuations etc is a consideration.
Safety light curtains do not protect personnel from chemicals, heat, gases, radiation, flying parts
etc. They are not a physical barrier.
The machine operators must be instructed in the use of the safety light curtain by the
owner/provider of the machinery.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 11 Date: 27 November, 2017
Figure E – Important Installation Considerations
1. Consider reflective surfaces that
may give rise to an optical ‘short
circuit’ from the direct path of the
safety light curtain’s infrared
beams as shown in the first
illustration of Fig. E. To ensure
the safety light curtain is mounted
far enough away from reflective
surfaces use the formula provided
to calculate the minimum distance
(X) between the light curtain and
reflective surface.
2. To prevent intermittent tripping of
the safety light curtain ensure that
extraneous infrared energy
between 800 and 1000
nanometers is not directed towards
the Perspex window of the receiver
unit (RX). Extraneous sources
would include infrared sensors,
infrared remote controls, scanning
systems or sunlight.
3. To prevent personnel from reaching
the danger point of the machine
additional mechanical guarding
may be required so that any access
has to be through the sensing field of the safety light curtain. The safety light curtain must be
positioned so as to prevent any overreach or under reach to the danger point. It must not be
possible to stand between the safety light curtain and the danger point.
The protection afforded by the safety light curtain should correspond to the machine Risk
Assessment under ISO 12100 for the machine being guarded.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 12 Date: 27 November, 2017
4. Ensure the light curtain transmitter (TX) and receiver (RX) units are mounted accurately
in-line with each other and are both perpendicular and parallel to each other within the
parameters shown for each axis.
5. If utilising mirrors to deflect the light curtain ensure the mirror length is 50mm longer at either
end of the light curtain detection zone width and mounted centrally to the zone. To ensure
reliable operation the light curtain deflection angle (A) from the mirror must not be less than
40 degrees or greater than 100 degrees. (SeeAppendix 3)

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 13 Date: 27 November, 2017
Figure F - Electrical Connections

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 14 Date: 27 November, 2017
Power Supply
Use a regulated power supply +24V DC ±10% fused at 1.5A. The T2A light curtain current
consumption is rated at 0.5A + load current of the OSSDs. The Brown wire on both the
Transmitter (TX) and Receiver (RX) head cables must be connected to 24V DC (L+). The Blue
wire on both the Transmitter (TX) and Receiver (RX) head cables must be connected to 0V DC
(L-).
Before the power supply is applied to the light curtain ensure both TX and RX heads are aligned
correctly.
Only Automatic Reset mode
The automatic reset mode allows the safety light curtain to be reset automatically, that is, on a
blockage of the safety light curtain’s sensing field it will turn off the safety outputs (OSSDs).
Removing the blockage from the sensing field of the light curtain will re-activate and turn on the
safety outputs (OSSDs). The configuration of the safety light curtain in the auto reset mode will
depend on the customer’s risk assessment for the machine.
Warning The shield on both the Transmitter (TX) and Receiver (RX) head
cables must be connected to Earth (PE).
Warning Do not disconnect the cables from the Transmitter (TX) or Receiver
(RX) head with the power still connected to the T2A series light curtain.
Any wiring or re-wiring of the light curtain must be done with the power supply
disconnected.
Any input or output signals that are not being used must be terminated safe.
The machine must be disconnected during electrical installation to ensure no
inadvertent start up of the machine occurs.
The connection cables must be not be routed with high-voltage cables, e.g.
inverter cables or motor power supplies.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 15 Date: 27 November, 2017
Safety Outputs OSSD1 and OSSD2
Two independent (PNP) electronic switching failsafe signal outputs (OSSDs) are provided for the
machine safety circuit. Interruption of the safety light curtains infrared sensing field will cause
the OSSDs to go to an OFF state and initiate a machine stop condition.
The connections are provided via the Black wire (OSSD1) and the White wire (OSSD2) on the
Receiver (RX) head cable.
Outputs ON = +24V DC (Light curtain clear)
Outputs OFF = 0V DC (Light curtain blocked)
The electronic outputs are monitored and rated at a maximum switching rating of 24V DC,
500mA. LED indicators located on the Receiver (RX) head show the status of the OSSDs.
Green LED ON = OSSD1 and OSSD2 active ON
Red LED ON = OSSD1 and OSSD2 inactive OFF

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 16 Date: 27 November, 2017
Figure G,I – Status and Diagnostic Indication
The T2A series has status indication LEDs on the Receiver (RX) and LED S1, S2 used for error
mode indication, the LEDs was located at the bottom of the Receiver (RX) head.
They provide a range of functions to help in the set-up of the safety light curtain and in fault
diagnosis.

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 17 Date: 27 November, 2017
Figure G & I defines the features (F) associated with the Smartscan T2A light curtain system.
Receiver (RX) Status Indicators
F1 –CLEAR (Light curtain active or blocked) (Two color LED, Red & Green)
CLEAR GREEN LED ‘on’ and RX OSSD OFF LED ‘off’ = Light curtain has been initiated
and the OSSDs are in the on state, (only when the light curtain detection zone is clear of
any obstruction).
The CLEAR (Red LED) provides one functions,

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 18 Date: 27 November, 2017
RED LED ‘on’ = Light curtain safety off. OSSD1 and OSSD2 are ‘OFF’ e.g. when
the light curtain detection zone is ‘blocked’.
All CLEAR (Green LED) ‘on’ = Light curtain aligned.
F3 – OSSD (OSSD output status) (Red LED)
Red LED ‘on’ = OSSD output turn OFF.
Red LED ‘off’ = OSSD output turn ON.
Red LED ‘blinking’ = the light curtain system is in lockout.
If the Red LED indicator is flashing the system is in lockout. To recover from a lockout
condition, disconnect the transmitter and receiver from the power source and then
re-apply.
Emitter (TX) Status Indicators
F2 – CLEAR (Light curtain active or blocked) (Two color LED, Red & Green)
CLEAR GREEN LED ‘on’ and RX OSSD OFF LED ‘off’ = Light curtain has been initiated
and the OSSDs are in the on state, (only when the light curtain detection zone is clear of
any obstruction).
The CLEAR (Red LED) provides one functions,
RED LED ‘on’ = Light curtain safety off. OSSD1 and OSSD2 are ‘OFF’ e.g. when
the light curtain detection zone is ‘blocked’.
All CLEAR (Green LED) ‘on’ = Light curtain aligned.
Receiver (RX) Diagnostic Indicators (S1, S2, S3 LED)
Fault Diagnosis
The display panel also provides 6 different error codes, (E0, E1, E2, E3, E4, E5, E6) to aid
fault diagnosis.
E0 = Light curtain OSSDs output disparity
The E0 error code will be displayed if an electrical short-circuit occurs with the 2
independent (PNP) electronic switching failsafe signal outputs (OSSD1) of the

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 19 Date: 27 November, 2017
safety light curtain or they are being driven higher than the 500mAmaximum
specification.
E1 = Light curtain OSSDs output short
The E1 error code will be displayed if an electrical short-circuit occurs with the 2
independent (PNP) electronic switching failsafe signal outputs (OSSD2) of the
safety light curtain or they are being driven higher than the 500mAmaximum
specification.
E2 = RX internal system error, EMC CPU I/O port fault
The E2 error code will be displayed if an electrical short-circuit occurs with the 2
independent (PNP) electronic switching failsafe signal outputs (OSSDs) of the
safety light curtain or they are being driven higher than the 500mAmaximum
specification.
E3 = TX, RX Communication error
The E3 error code will be displayed, if failure in RX EMC CPU U1 Beam 1~4 I/O
port status is error (short circuit).

Safety Light Curtain – T2A Series
Installation Guide
File Number: CD1008A
page 20 Date: 27 November, 2017
Figure H – Identification Labels
Examples are shown below of the identification labels that are affixed to the bottom of the
transmitter (TX) and receiver (RX) columns.
T2A series T2B series