7.5.5.4
Reset for Safe Stop 2 function block
Figure 38: Function block view - Reset for Safe Stop 2
With the
Reset
function block, the requirements of the safety application are fulfilled as
set out by the EN ISO 13849-1 standard for detecting a manual safety stop with a sub‐
sequent request to restart the application.
As soon as the
Safe Position
and
Override active
jump addresses are no longer set to High,
the
Safe Stop 2
function is initiated.
If the
Reset_SS2
input is set to High, the release condition has been met. A reset signal
with a pulse duration of at least 100 ms sets the
Enable
output to High.
The
Enable
and
Reset required
outputs are used in order to use the optional
H210.1 Reset
required
light by means of the user-defined
Lamp reset/restart required
function block.
7.5.5.5
Restart for Safe Stop 2 function block
The
Restart
function block allows for a graphical distinction to be made between the
function blocks.
As soon as the
Release 1
input is no longer set to High, the
Safe Stop 2
function is initi‐
ated.
A valid reset sequence at the
Reset
function block is required in order for a restart to be
triggered.
If the
Restart
input is set to High, the release condition has been met. The
Enable
output
is set to High when a restart signal (
Restart_SS2
) lasts for a pulse duration of at least
100 ms.
The
Enable
output is linked to the MOC1 logic via an AND function block in order to initi‐
ate the
Safe Stop 2
function with the
Safe Stop
function block. The output is also linked to
the
Safe Stop 2
jump address, which notifies other parts of the CPU logic that a
Safe Stop
2
request has been issued.
The
Enable
and
Reset required
outputs are used in order to use the optional
H210.1 Reset
required
light by means of the user-defined
Lamp reset/restart required
function block.
7.5.5.6
Triggering a Safe Stop 2 with additional safety functions
The Safe Stop 2 function can also be triggered by additional safety functions. The
AND
function block connects additional safety functions via the
Input 2
input, which is
linked to the
External_SS2
jump address.
Further topics
•
"Extension and modification", page 19
•
"Configuring additional safety functions", page 49
CONFIGURATION
7
8020941/12O9/2019-08-05 | SICK
O P E R A T I N G I N S T R U C T I O N S | Safe Linear Positioning
63
Subject to change without notice
