Safety precautions – KEYENCE FS-N10 Series User Manual
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96141E
Safety Precautions
• Do not wire the amplifier line along with power lines or high-tension lines, as the
sensor may malfunction or be damaged due to noise.
• When using a commercially available switching regulator, ground the frame ground
terminal and ground terminal.
• Do not use the FS series outdoors, or in a place where extraneous light can enter
the light receiving element directly.
• Due to individual dispersion characteristics and the difference in fiber unit models,
the maximum sensing distance or displayed value may not be the same on all
units.
• If the sensor is used for a long time with the APC function enabled and the LED is
imposed with a heavy load, the current consumption of the sensor for light
emission will become constant and 'END APC' will be displayed. The sensor can
still be used in this case. However, replace the sensor if even small changes in
received light intensity should be detected for precise detection.
About UL Certification
The FS-N Series is UL and C-UL certified, and is compliant with the UL and CSA
standards.
• Applicable standardsUL508 Industrial Control Equipment
CAN/CSA C22.2 No.14-M05 Industrial Control Equipment
• UL File No. E301717
• UL categories: NRKH, NRKH7
• Enclosure Type 1 (based on UL50 standard)
Notes on UL Certification
• The power source used with the FS-N Series must be UL Listing certified for Class
2 output as stipulated by US National Electric Code (NEC) NFPA70.
• Power supply/Control input/Control output shall be connected to a single Class 2
source only.
• Connect the FS-N12 and N14 to the FS-N11 and N13 main units for use.
• Use with the over current protection device which is rated 30V or more and not
more than 1A.
Hints on Correct Use
• Do not use this product in safety circuits for human protection.
• This product is not explosion-proof. Do not use the product in
places with flammable gas, liquid, or dust.
• This product uses DC power. Do not apply AC power. The
product may explode or burn if an AC voltage is applied.
WARNING