schmersal SLC 410 B, Монтаж и подключение, Страница: 51 / 112

13
AUTOMATIC MODE
The SLC 410 B / BM light curtain features only one Automatic operating mode (without re-
start interlock).
The SLC 410 B / BM light curtain is not equipped with a start/restart interlock circuit.
This safety function is compulsory in most applications. The safety modules of the
series SCR and SRB permit safe implementation of this function according to IEC
61496-1. Carefully assess the related risks analysis of own application.
In this mode, the OSSD1 and OSSD2 safety outputs comply with the status of the light
curtain:
š with the area protected free, the outputs are active.
š with the area protected occupied, they are de-activated.
BLANKING FUNCTION
The SLC 410 B / BM opto-electronic light curtain features a floating blanking function according to
which the user can inhibit the detection function
from a minimum of 1 beam to a maximum of 3
adjacent beams
with two different types of functioning according to the selected method of
configuration.
The blanking function is useful in applications in which, in specific safety conditions, opaque objects
must be introduced in the area protected by the light curtain without stopping the controlled machine.
This function is particularly useful when the area protected by the light curtain may be intercepted by
the material being processed or by a fixed or mobile part of the machine.
š Note that this function cannot be activated on the synchronism beam (1
st
beam starting
from the signaling label with display).
š Using the blanking function, the resolution of the light curtain is modified according to
Table 7 and Table 8.
When the width of the mobile object is less than that of the protected area (range),
suitable mechanical guards must be provided to the sides in order to prevent accidents
due to the unprotected areas. If the object is moved vertically, the safety guards must
move so that they remain adjacent with this. (Figure 10)
Figure 10
MECHANICAL
GUARDS UNPROTECTED AREA