“Max time monitoring” network
Figure 8: “Max time monitoring” network
This network includes four
Event Counter (up)
function blocks that must be configured. Up
to four different timings for the different conveyor speeds or different material lengths
can be configured.
Each of the four
Event Counter (up)
function blocks corresponds to one of the timings that
can be selected using the Timing Set function. The uppermost
Event Counter (up)
function
block defines the timing with the index 1, while the lowest, in accordance with the
ascending order, defines Timing 4.
The value set in this function block determines the maximum duration of the muting
function. If the Type 4 electro-sensitive protective device is still interrupted after this
period has elapsed, an error is output.
Configuration instructions:
The configuration of the maximum time in this network is based on the counting of peri‐
ods in a defined clock with a defined overflow value.
The defined clock periods are set in the
Time monitoring general
network,
tion of Time monitoring", page 31
.
The overflow values for the various timings must be set in the
Event Counter (up)
function
blocks in this network. If the Timing Set Selection function is not used, only the upper‐
most
Event Counter (up)
function block has to be configured. The time required until the
overflow value for the respective
Event Counter (up)
function block is reached with the pre‐
set clock determines the maximum duration of the muting function.
The maximum duration of the muting function is calculated using the following formula.
The material length l
goods
and conveyor speed V
conveyor
are needed for this. T
Interruption ESPE
corresponds to the expected muting period of the protective device. It is forbidden to
set this value above 10 min.
7
CONFIGURATION
34
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