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3.2 Securing the Danger Zone
The danger zone must be secured by means of the light curtain alone, or by means of the light curtain in
combination with additional mechanical safety devices. Reaching around, over and/or under the safety
field must be prevented in any case. It must be impossible to approach the point of danger without passing
through the safety field.
The safety field is located between the line at which light is emitted at the emitter and the line at which light
is received at the receiver. The boundaries of the safety field are identified on the devices.
Examples:
Incorrect
Correct
Side-Stepping
Reaching Under
Reaching Over
