Inputs used
Choose t
he inputs that you would like to use for switching between monitoring cases in
the monitoring case table.
In antivalent evaluation, the 2 channels of each static control input must always be
inverted, even if the status of a control input in a monitoring case is random. If it is not
inverted, all safety outputs switch to the OFF state and the device displays a fault.
Input delay
If appr
opriate, select a delay for the inputs in the field Input delay.
If your control device, which you use to switch the static control inputs, cannot switch to
the appropriate input condition within 12 ms (for example because of the switch’s
bounce times), you must configure an input delay. For the input delay, select a time in
which your control device can switch in a defined way to a corresponding input condi‐
tion. You can increase the delay time incrementally.
The following empirical values exist for the switching time using various methods:
Table 14: Empirical values for the required input delay
Switching method Required input delay
Electronic switching via control, complementary electronic outputs
w
ith 0 ms to 12 ms bounce time
12 ms
Tactile controls (relays) 30 ms to 150 ms
Control via independent sensors 130 ms to 480 ms
Also, take account of the notes relating to when to switch between monitoring cases
(see "Monit
oring case switching time", page 32).
7.12.1.1 Switching order
Overview
Y
ou can specify the order in which the monitoring cases can be called.
You can specify one or two subsequent monitoring cases for each monitoring event. If
you do not specify a subsequent monitoring case for a monitoring case, then any moni‐
toring case may follow.
If input conditions are present which do not call up any of the defined subsequent mon‐
itoring cases, the safety laser scanner switches all safety outputs to the OFF state.
You can specify the order of the monitoring cases as a process or in individual steps.
Process
Y
ou define one or more sequences. You can use a sequence to map the sequence of
work steps for your machine.
In all sequences, you can define a maximum of two subsequent monitoring cases for
each monitoring case.
If you do not specify a subsequent monitoring case for a monitoring case, then any
monitoring case may follow.
Individual steps
Y
ou define individually for each monitoring case which one or two monitoring cases may
follow.
If you do not specify a subsequent monitoring case for a monitoring case, then any
monitoring case may follow.
7 C
ONFIGURATION
106
O P E R A T I N G I N S T R U C T I O N S | microScan3 – EFI-pro 8021913/15ZW/2019-11-14 | SICK
Subject to change without notice
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