NOTE
Mar
k the outline of the protective field boundaries on the floor after you have worked
out the protective field size. By doing this, you allow machine operators to see the pro‐
tective field boundaries and make it easier to thoroughly check the protective function
at a later date.
4.3.6.1 Protective field
Overview
T
he protective field must be designed so that it detects a person at a minimum
distance from the hazardous point. This distance is required to prevent a person or
part of their body from reaching the hazardous area before the end of the machine’s
dangerous state.
In hazardous area protection, the minimum distance typically defines the protective
field size required.
If you define a number of monitoring cases with different protective fields, you must
calculate the protective field size separately for each protective field used.
In many cases, a resolution of 50 mm to 70 mm is suitable for hazardous area
protection.
Important information
DANGER
H
azard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
1. Calculate the required minimum distance for your machine using the following
formulas and examples.
2. Take this calculation and the specifications in these instructions into account
when mounting the safety laser scanner.
3. Take this calculation and the specifications in these instructions into account
when configuring the safety laser scanner.
DANGER
H
azard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of
non-observance.
Body parts to be protected may not be detected under coarse resolution.
b
Use a resolution of 70 mm or finer for hazardous area protection.
b
For hazardous area protection with a resolution of 70 mm: make sure that it is
possible to detect a human leg.
b
For hazardous area protection with a resolution of 70 mm: mount the safety laser
scanner at a height of at least 300 mm (height of the scan plane).
b
If it is not possible to mount the safety laser scanner at a height of at least
300 mm, use a finer resolution see "Calculating required resolution", page 40.
PROJECT PLANNING 4
8025424/1ELL/2022-01-21 | SICK O P E R A T I N G I N S T R U C T I O N S | microScan3 Pro I/O
35
Subject to change without notice
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