The time set here is the initialization time window between the request from the higher-
level controller and the interruption of the Type 4 electro-sensitive protective device. By
configuring a suitable initialization time window, it is possible to ensure that people in
front of the material being transported are detected.
Configuration instructions:
The delay times to be configured correspond to the time required for a 200 mm convey‐
ing line at the respective conveyor speed. It is forbidden to set this value above 4 s.
T
initiation
=
0.2 m
Vconveyor
A shorter delay time can be set if the accuracy of the signals from the higher-level con‐
trol is precise enough to ensure the availability of the system.
WARNING
Serious injury may occur due to unreliable presence detection.
Monitoring the 200 mm conveying distance between requesting the Safe Entry Exit
function and the time at which the protective field of the Type 4 electro-sensitive protec‐
tive device is interrupted ensures that people in front of the material being transported
will be detected.
The calculation of T
initiation
is safety-related.
If the risk assessment concludes that people in front of the material definitely need
more than 200 mm of space, the distance can be adjusted accordingly.
“Termination” network
Figure 5: “Termination” network
This network includes the two
Adjustable on-delay timer
function blocks. Up to four differ‐
ent times can be configured for different conveyor speeds, depending on the applica‐
tion. These times can be selected using the optional Timing Set Selection,
. If this function is not used, only the
On delay time 1
parame‐
ter needs to be configured.
The switch-on delay time set in the upper function block is the time needed for the pro‐
tective field of the Type 4 electro-sensitive protective device to be released again after
the muting function has ended.
The switch-on delay time configured in the above function block also correlates to the
size tolerance for gaps between the conveyed materials.
The switch-on delay time configured in the lower function block refers to the time after
which the muting function is ended, following the end of the request from the higher-
level control.
7
CONFIGURATION
30
O P E R A T I N G I N S T R U C T I O N S | Safe Entry Exit
8021675/ZV26/2019-05-13 | SICK
Subject to change without notice
