Datalogic SG2 BASE Series, Оригинальное руководство пользователя

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SG2 MUTING
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1.4.3 Minimum installation distance
The safety device must be positioned at a specific safety distance ( Fig 4 - page 13 ).
This distance must ensure that the dangerous area cannot be reached before the dangerous motion of the
machine has been stopped by the Safety Control System.
The safety distance depends on 4 factors, according to the EN ISO 13855 Standard:

Response time of the ESPE (the time between the effective beam interruption and the opening of the OSSD
contacts)

Machine stopping time including Safety Control System computing and actuating time if present.

ESPE resolution

Approaching speed of the object to be detected
Fig 4 - Installation distance (vertical positioning)
The following formula is used for the calculation of the safety distance:
S = K (t1 + t2) + C
where:
S = Minimum safety distance in mm
K = Speed of the object, limb or body approaching the dangerous area in mm/sec
t1 = Response time of the ESPE in seconds (see cfr. TECHNICAL DATA page 60 )
t2 = Machine stopping time in seconds (including the Safety Control System)
C = Additional distance based on the possibility to insert the body or one of body parts inside
the dangerous area before the protective device trips.
C=8 (R -
14) for devices with resolution ≤ 40 mm
C=850 mm for devices with resolution > 40 mm
R = Resolution of the system
K value is:
2000 mm/s if the
calculated value of S is ≤ 500 mm
1600 mm/s if the calculated value of S is > 500 mm