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6.5 EDM FUNCTION
The light curtain has a function for monitoring actuation external devices (EDM). This function can be
enabled or deactivated by dip-switches of RX device (see section 5 – "ELECTRICAL CONNECTIONS AND
CONFIGURATION").
The timing diagram below explains the relationship between the cause (OSSDs) and the effect (EDM), with
the maximum permissible delay.
OSSDs STATUS
EDM
≤
T
350 msec time after the OSSD OFF-ON passage when EDM is carried-out;
c
≤
T
100 msec time after the OSSD ON-OFF passage when EDM is carried-out.
0
(two different times for the mechanical contact driven by a spring).
6.5.1 SG4-RB...-W Models EDM Connection
EDM deactivated:
Disconnect or connect to 0V EDM input pin of RX connector.
EDM enabled:
Connect EDM input pin of RX connector (see section 5 – "ELECTRICAL CONNECTIONS AND
CONFIGURATION") to a 24 VDC normally closed contacts of the device to be monitored (see Figure 35).
Note: The decimal dot on the display shows that the function is enabled.
The function controls the NC contact switching according to the changes of the OSSD status.
Figure 35 – Connection of EDM (for SG4-RB...-W models)
Tc
Figure 34
36
NORMAL
OPERATION
SAFE
24Vdc
0Vdc
To
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