KEYENCE SL-CHG Series - Manual (Page 21)

Chapter 2 Installation and Assembly
2-3
2
ENGLISH
Mounting position of transmitter and receiver:
Correct position
• The hazardous zone or hazards within the machine are accessible only through the SL-CHG detection
zone.
• While the machine is running, the machine operator's body always stays on the opposite side of the
hazardous zone or hazard.
Incorrect installation
• The machine operator can access the hazardous zone or hazards without passing through the SL-CHG
detection zone.
• The machine operator’s body can enter between the SL-CHG detection zone and hazardous zone or
hazard while the machine is running.
Safe
Safe
Protection
device
Dangerous
Dangerous
Dangerous
WARNING
If the machine operators are not protected from hazards by the SL-CHG in the
entire hazardous zone, always add a safety protective equipment such as a safety
guard to the portion of the hazardous zone that is not covered by the SL-CHG.
Also, install the SL-CHG so that the machine operators cannot access the
hazardous zone or hazards without passing through the SL-CHG’s detection zone
or protection zone. In other words, do not install the SL-CHG in a layout that allows
machine operators to enter between the SL-CHG and the machine's hazardous
zone or hazards without being detected by SL-CHG or access the machine's
hazardous zone or hazards by bypassing the SL-CHG’s detection zone. If these
warnings are violated, it may result in serious harm, such as an injury or death of
the machine operator.