KEYENCE SL-CHS Series - Manual (Page 6)

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■ 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 impos-
sible 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 SL-
CHS 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.
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 SL-
CHS 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, includ-
ing 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 calibra-
tion 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.
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