2. General Precautions .................................................................................................................................iii
4. Circuit Design and Wiring .........................................................................................................................v
5. Testing and Maintenance ..........................................................................................................................v
6. About Standards and Regulations ..........................................................................................................vi
7. Package Contents .................................................................................................................................... vii
1Overview and Specifications
1-1 Component Names and Units ........................................................................................................... 1-1
1-1-1 Main System and Cables ............................................................................................................ 1-1
1-2 Mounting Brackets and Cables ......................................................................................................... 1-2
1-5-1 Status Indicator .......................................................................................................................... 1-11
1-5-2 Lockout Status Bar LED Indicator ............................................................................................. 1-12
1-5-3 Test Input .................................................................................................................................. 1-13
1-5-4 NPN and PNP Outputs ............................................................................................................. 1-13
1-5-5 Series Connection .................................................................................................................... 1-13
3-2 Power Requirements .......................................................................................................................... 3-1
3-3 When Only the SL-CHS is Used ........................................................................................................ 3-3
3-4 For SL-PC Cable (main unit plug - M12 connector)......................................................................... 3-4
3-5 Series Connection .............................................................................................................................. 3-4
3-6 Connection for Light Interference Prevention (Parallel Connection) ............................................ 3-5
3-7 Series Connection and Light Interference Prevention Connection (Parallel Connection) .......... 3-6
This instruction manual describes handling, operation, and precautionary information for the Safety Light
Curtain (“SL-CHS”).
Read this instruction manual thoroughly before operating the SL-CHS in order to understand the device
features, and keep this instruction manual readily available for reference.
1. Safety Headings
This instruction manual uses the following headings to display important safety information. Strict adherence
to the instructions next to these heading is required at all times.
ENGLISH
English
DANGER
WARNING
CAUTION
Important:
Note:
Tips
➮
Reference:
Failure to follow the instructions may lead to death or serious injury.
Failure to follow the instructions may result in significant harm to machine operators, including death.
Failure to follow the instructions may result in damage to the SL-CHS, or to the
machine on which it is installed.
Provides important precautions and restrictions for proper operation.
Provides additional information for proper operation.
Provides useful information for proper operation.
Provides reference pages.
2. General Precautions
•Verify that this device is operating normally in terms of functionality and performance before the start of
work and before the start of device operation.
•KEYENCE is unable to warrant the function or performance of the SL-CHS if it is used in a manner that
differs from the SL-CHS specifications contained in this instruction manual or if the SL-CHS is modified.
•When using the SL-CHS to protect machine operators from a hazardous zone or a hazard, or using it as
safety equipment for any purpose, always follow the applicable requirements, regulations, and laws
(collectively “regulations”) existing in the country or region where the SL-CHS is being used. For such
regulations, contact directly the regulatory agency responsible for occupational safety and health in your
country or region.
•Depending on the type of machine to which the SL-CHS is to be attached, there may be special safety
regulations related to the use, installation, maintenance, and operation of the device, and such safety
regulations must be followed. The responsible personnel must install the SL-CHS in strict compliance with
such safety regulations.
•The responsible personnel must train the assigned personnel for the correct use, installation, maintenance, and operation of the SL-CHS. “Machine operators” refers to personnel who have received appropriate training from the responsible personnel and are qualified to operate the device correctly.
•Machine operators must receive specialized training for the SL-CHS and must understand and follow the
safety regulations for the country or region in which they are using the SL-CHS.
•When the SL-CHS fails to operate properly, machine operators must immediately stop the use of the
device and report this fact to the responsible personnel.
•The SL-CHS is designed with the assumption that it would be properly installed in accordance with the
installation procedures described in this instruction manual and operated according to the instructions in
this instruction manual. Perform an appropriate installation of the SL-CHS after conducting a sufficient
risk assessment for the target machine.
•This device should be processed as an industrial waste product when being disposed.
iii
3. Warning
■ Operators
• In order for the SL-CHS to operate properly, the responsible personnel and machine operators must
follow all procedures described in this instruction manual.
• No person other than the responsible personnel and machine operators should be allowed to install or
test the SL-CHS.
• When performing electrical wiring, always follow electrical standards and regulations for the country or
region in which the SL-CHS is being used.
■ Usage environment
• Do not use the device in an environment (temperature, humidity, interfering light, etc.) that does not
conform to the specifications contained in this instruction manual.
• Do not use wireless devices such as cellular phones or transceivers in the vicinity of the SL-CHS.
• The SL-CHS is not designed to be explosion-proof. Never use it in the presence of flammable or
explosive gases or elements.
• Do not use the SL-CHS in the presence of substances, such as heavy smoke, particulate matter, or
corrosive chemical agents, that may induce deterioration in product quality.
• Install the SL-CHS in such a way so that no direct or indirect light from inverter-type fluorescent lights
(rapid-start type lights, high-frequency operation type lights, etc.) shine on the device.
■ Target machine
• The SL-CHS has not undergone the model certification examination in accordance with Article 44-2 of
the Japanese Industrial Safety and Health Law. The SL-CHS, therefore, cannot be used in Japan as a
“Safety Device for Press and Shearing machines” as established in Article 42 of that law.
• The machine on which the SL-CHS is to be installed must be susceptible to an emergency stop at all
operating points during its operation cycle. Do not use the SL-CHS for machines with irregular stop
times.
• Do not use the SL-CHS for power presses equipped with full-revolution clutches.
• Do not use the SL-CHS to control (stop forward motion, etc.) trains, cars and other transportation
vehicles, aircraft, equipment for use in space, medical devices, or nuclear power generation systems.
• The SL-CHS is designed to protect people or objects from entering a machine's hazardous zone or
hazard. It cannot provide protection against objects or materials that are displaced from the machine's
hazardous zone or hazard, and so implement additional safety measures such as installing safeguards
when there is the possibility of such displacements.
iv
ENGLISH
■ Installation
• The SL-CHS must be installed only after securing the minimum safety distance between the SL-CHS
and the hazardous zone or hazard as established by the applicable regulations of the country or region
in which the SL-CHS is being used.
• Choose locations for the installation of SL-CHS transmitters and receivers so that they are not subject
to the effects of light reflected from glossy surfaces in the area.
• Use the same models (same beam axis) for transmitter/receiver pairs.
• The SL-CHS must be installed in such a way that machine operators cannot reach the hazardous zones
or hazards of the machine without passing through the detection zone of the SL-CHS series. Strictly
avoid installations which allow machine operators to access the area between the SL-CHS and the
machine, or where machine operators can approach the machine's hazardous zones, without passing
through of the SL-CHS Series detection zone.
• Always perform tests after installing the SL-CHS in accordance with the test procedures established in
this instruction manual, verifying that the test pieces are detected in all of the detection zones.
• When the Intelligent Extension Unit (SL-R12EX) is used to enable the fixed blanking function, additional
safety measures must be implemented for the zone in which that function is enabled so that it is impossible to reach the hazardous zone or hazards of the machine by passing through that zone.
• When the Intelligent Extension Unit (SL-R12EX) is used to enable the floating blanking function, the
minimum safety distance will be affected due to the fact that the function has a negative effect on the
detection capability. Therefore, in such cases, calculate the minimum safety distance using the new
value for detection capability with the floating blanking function enabled and apply the result for the SLCHS installation.
• When the Intelligent Extension Unit (SL-R12EX) is used to enable the floating blanking function, confirm
that the actual number of beam axes with which the floating blanking function is active matches the
number of beam axes specified in the floating blanking function setting.
• When the Blanking Blind Protection Unit (SL-CHS08SB/SL-CHS16SB) is used to install the SL-CHS, a
test must be carried out according to the procedures described in this instruction manual to confirm that
the test piece can be detected in all detection zones including the detection zone that can be detected
by the Blanking Blind Protection Unit.
• Securely tighten mounting brackets and cord (cable) connectors used in the installation of the SL-CHS
in accordance with the torque values established in this instruction manual.
ENGLISH
English
4. Circuit Design and Wiring
•Always turn off the device power when performing electrical wiring.
•Follow electrical standards and regulations for the country or region in which the SL-CHS is being used
when performing the electrical wiring. Only qualified persons should perform wiring.
•Do not place any cables or electrical lines used in wiring the SL-CHS in the same duct as high-voltage
electrical or power lines or in parallel with such lines.
•Do not extend transmitter and receiver cables over a maximum distance of 30 meters (98.43 ft.).
•Install the mechanism used to reset the interlock (switches, etc.) in a position from which the condition of
the entire hazardous zone can be checked. Do not install the reset mechanism in a position where it can
be operated within the hazardous zone.
•The control outputs (OSSD for SL-CHS Series or FSD for SL-R11) of the two systems provided in the SLCHS must both be used to build a safety system. Building a safety system with just one of these systems
cannot stop the machine due to a control output malfunction and can result in a serious accident, including serious injury or death to the machine operator.
5. Testing and Maintenance
•Always perform testing in accordance with the test procedures after maintenance, adjustment, or calibration of the target machine or the SL-CHS, and before the machine start-up.
•If the SL-CHS does not operate properly when tested in accordance with the test procedures established
in this instruction manual, do not operate the machine.
•Periodically examine the machine to verify that all brakes, other stop mechanisms, and control devices
operate reliably and accurately in addition to checking the SL-CHS.
•The responsible personnel must perform maintenance procedures as established in this instruction
manual at least once every six months to ensure safe device operation.
v
6. About Standards and Regulations
1) The SL-CHS Series and SL-R11(E) comply with the following UL (Underwriters Laboratories Inc.)
Standards and have received Canada-U.S.-Listing certification from UL.
• UL61496-2 (Type 4 AOPD - Active Opto-Electronic Protective Device)
2) The SL-CHS Series and SL-R11(E) have not received the model certification examination in
accordance with Article 44-2 of the Japanese Industrial Safety and Health Law. Therefore, the SLCHS Series and SL-R11(E) cannot be used in Japan as a “Safety Devices for Presses and Shearing
machines” as established in Article 42 of that law.
3) The SL-CHS Series and SL-R11(E) have been designed in consideration of the following standards
and regulations. For details regarding the following standards, contact the third-party certification
organization, such as UL.
<Corresponding standards>
• OSHA 29 CFR 1910.212
• OSHA 29 CFR 1910.217
• ANSI B11.1 - B.11.19
• “Guidelines for Comprehensive Safety Standards of Machinery”, July 31, 2007, number 0731001 issued
by, Ministry of Health, Labor, and Welfare in Japan.
vi
ENGLISH
7. Package Contents
Confirm that the package includes the main unit and the following accessories.
■ Accessories
• Intermediate support bracket for installation
*Two pieces of supports are supplied with models SL-C36HS through SL-C48HS. Four pieces of
supports are supplied with models SL-C52HS through SL-C64HS.
Intermediate support bracket AIntermediate support bracket B
*Two connectors are also available grouped as a set (OP-42373).
* It is not possible to install the SL-CHS only by using the intermediate support brackets that come with
models SL-C36HS through SL-C64HS. Use optional mounting brackets along with Intermediate
support brackets.
• One test piece (Diameter, 25 mm (0.98") for SL-CHS)
ENGLISH
English
• Instruction manual (this document) 1 copy
vii
Chapter 1 Overview and Specifications
1 Overview and Specifications
1-1 Component Names and Units
This section describes each part of the SL-CHS Series and optional units.
For component locations and appearances, ➮
1-1-1 Main System and Cables
When using the SL-CHS stand-alone
see the “1-4 Dimensional Drawings” (page 1-7).
1
T: Transmitter
SL-CHS Series Transmitter
R: Receiver
Status indicator
(on both sides)
SL-P7N/P (7 m (22.97 ft.)) cable
for transmitter (gray)
Detection zone
SL-CHS Series Receiver
SL-P7N/P (7 m (22.97 ft.)) cable
for receiver (black)
When combining the SL-CHS with a controller
SL-CHS Series + SL-U2 (Dedicated power supply unit) + SL-R11 (Intelligent safety relay unit)
Detection zone
SL-PC5P (5 m (16.4 ft.)) cable for transmitter (gray)
* 10 m(32.81
SL-U2: The UL certified or recommended dedicated power supply unit
SL-R11:The safety relay is built-in. This is connected to the SL-CHS by a special connector.
ENGLISH
1-1
Chapter 1 Overview and Specifications
1-2 Mounting Brackets and Cables
This section offers an explanation of safety light curtain mounting brackets and cables. Mounting brackets
and cables are optional equipment for the SL-CHS.
1
1-2-1 Mounting Brackets
Normal mounting bracket ANormal mounting bracket BNormal mounting bracket C
OP-42347 (1 set of 2 brackets)OP-42348 (1 set of 2 brackets)OP-42349 (1 set of 2 brackets)
SL-CHSC10NR (NPN 10 m (32.81 ft.) Receiver),
SL-CHSC10PT (PNP 10 m (32.81 ft.) Transmitter),
SL-CHSC10PR (PNP 10 m (32.81 ft.) Receiver)
41.5
ø14
ø6
M12 connector-bare wiresSL-CHS5N (NPN 5 m (16.4 ft.))
SL-CHS5P (PNP 5 m (16.4 ft.))
(Transmitter/receiver set)
ø6
ø14
Series connection cableSL-S0 (0.08 m (3.14"))
SL-S1 (0.15 m (5.91"))
SL-S2 (0.5 m (1.64 ft.))
SL-S3 (3 m (9.84 ft.))
SL-S4 (1 m (3.28 ft.))
SL-S10 (10 m (32.79 ft.))
(Transmitter/receiver set)
ø6
ENGLISH
1-3
1
Chapter 1 Overview and Specifications
1-3 Specifications
Specifications (Detection capability of 25 mm (0.98") diameter type)
Model
No. of beam axes
Detection capability
Beam Axis Pitch/Lens Diameter
Detection zone
Protection zone
Current
consumption
Weight
Transmitter
Receiver
Transmitter
Receiver
SL-C08HS
140 mm (5.51")
185 mm (7.28")
55 mA
67 mA
Approx. 165 g
Approx. 180 g
SL-C12HS
8
220 mm (8.66")
265 mm (10.43")
Approx. 210 g
Approx. 230 g
SL-C16HS
12
ø25 mm (0.98") (when the blanking function is not used)
300 mm (11.81")
345 mm (13.58")
58 mA
69 mA
61 mA
71 mA
Approx. 255 g
Approx. 280 g
SL-C20HS
16
20 mm (0.79") / ø5 mm (0.19")
380 mm (14.96")
425 mm (16.73")
62 mA
73 mA
Approx. 300 g
Approx. 330 g
SL-C24HS
20
460 mm (18.11")
505 mm (19.88")
68 mA
76 mA
Approx. 345 g
Approx. 380 g
24
SL-C28HS
540 mm (21.26")
585 mm (23.03")
71 mA
78 mA
Approx. 390 g
Approx. 430 g
SL-C32HS
28
620 mm (24.41")
665 mm (26.18")
74 mA
81 mA
Approx. 435 g
Approx. 480 g
32
SL-C36HS
36
700 mm (27.56")
745mm (29.33")
77 mA
83 mA
Approx. 480 g
Approx. 530 g
Model
No. of beam axes
Detection capability
Beam Axis Pitch/Lens Diameter
Detection zone
Protection zone
Current
consumption
Weight
Transmitter
Receiver
Transmitter
Receiver
SL-C40HS
780 mm (30.71")
825 mm (32.48")
81 mA
86 mA
Approx. 525 g
Approx. 575 g
SL-C44HS
40
ø25 mm (0.98") (when the blanking function is not used)
860 mm (33.86")
905 mm (35.63")
84 mA
88 mA
Approx. 570 g
Approx. 625 g
44
SL-C48HS
20 mm (0.79") / ø5 mm (0.19")
940mm (37.01")
985 mm (38.78")
87 mA
90 mA
Approx. 615 g
Approx. 675 g
SL-C52HS
48
1020 mm (40.16")
1065 mm (41.92")
Approx. 660 g
Approx. 725 g
52
91 mA
93 mA
SL-C56HS
1100 mm (43.31")
1145 mm (45.08")
94 mA
95 mA
Approx. 705 g
Approx. 775 g
SL-C60HS
56
1180 mm (46.46")
1225 mm (48.23")
Approx. 750 g
Approx. 825 g
60
97 mA
97 mA
SL-C64HS
64
1260 mm (49.61")
1305 mm (51.38")
100 mA
100 mA
Approx. 860 g
Approx. 945 g
ENGLISH
English
1-4
Chapter 1 Overview and Specifications
Common specifications
Model
SL-C**HS Operating distance
Effective Aperture Angle
Max. ±2.5° (When operating distance is 3 m (9.84 ft.) or more)
Response time
Light source
Operation form
Rating
Power voltage
Output type
Turns on when light is received from all light beams (except when the blanking function is used)
24V DC ±10% (Ripple P-P 10% or less)
2 outputs each for PNP and NPN, Can be changed using the connector cable
Max. load current
OSSD
Output
OFF-state voltage
Leakage current
Max. capacitive load
2.5 V (with a cable length of 7 m (22.97 ft.))
0.47 µF (with a load resistance of 100 Ω)
Load wiring resistance
Protective structure
Environmental
specifications
Ambient temperature
Storage ambient temperature
Relative humidity
Storage ambient humidity
Ambient light
Vibration
Shock
35 % to 85 %RH (No condensation)
White incandescent lamp: 5,000rx or less Sunlight: 20,000rx or less
10 to 55 Hz, 0.7 mm compound amplitude, 20 sweeps each in X, Y, and Z directions
100 m/s2 (Approx. 10G) 16ms pulse, in X, Y, Z directions 1,000 times each axis
Main unit case
Material
Upper case/Lower case
Overlay
EMC
Approved
standards
*1 OFF ➝ ON return time is 125 ms.
*2 Note the derating illustrated in the graph to the right when using PNP output.
*3 Includes when the SL-CHS Series power supply is OFF or when there is a disconnection in the power
supply line.
*4 In order to guarantee the proper operation of the SL-CHS safety circuit, the wiring resistance
(excluding dedicated cable wiring resistance) of the cabling connected to the hardware to which the
OSSD output and OSSD input are connected must be 2.5 Ω or less. For NPN output type cable, do not
let wiring resistance exceed a maximum of 1.0 Ω when the cable length is 15 m (49.21 ft.) or greater
and the load current is 200 mA or higher.
Safety
EMS
EMI
SL-CHS Series
0.3 to 9 m
1
15 ms*
Infrared LED (850 nm)
300 mA*
2
Max. 100 µA*
Max. 2.5 Ω*
4
IP65 (IEC60529)
-10°C to 55°C (No frost)
-10°C to 60°C (No frost)
35 % to 95 %
Aluminum
Zinc die-cast
Polycarbonate
UL61496-1
FCC Part15 Class A
UL61496-1 (
UL61496-2 (
type
type
UL508
4 ESPE)
4 AOPD)
3
(mA)
300
200
100
0
10 20 30 40 50 (°C)
1
1-5
ENGLISH
Chapter 1 Overview and Specifications
1-4 Dimensional Drawings
1
With the E-to-E mounting bracket (OP-42370) installed
* If using the normal mounting brackets A, B, C, or the L-shaped mounting bracket for installing the model that has the sensor length 710 mm (27.95") or more, use of two intermediate support
brackets is required. For such installation, attach intermediate support brackets at dimensional positions C1 and C2. For other installations, attach one intermediate support bracket at dimensional
position C.