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Important information
DANGER
Hazard due to unexpected starting of the machine
The machine may not restart if the OSSDs switch to the ON state once the reset push‐
button has been pressed. The control must ensure that the machine only restarts if the
machine start button is also pressed after the reset pushbutton.
b
Make sure that the machine can only restart once the reset pushbutton and start
button have been pressed in the specified order.
Functionality
Before the machine can be restarted, the operator must reset the restart interlock.
!
§
"
$
Figure 20: Schematic representation of operation with restart interlock
The dangerous state of the machine (
!
) is brought to an end if the light path is inter‐
rupted (
"
) and is not re-enabled (
§
) until the operator presses the reset pushbutton
located outside the hazardous area (
$
). The machine can then be restarted.
Depending on applicable national regulations, a restart interlock must be available if it
is possible to stand behind the protective device. Observe IEC
60204-1.
4.4.1.1
Integrated restart interlock and reset
Prerequisites
•
A reset device, such as a reset pushbutton, is connected.
24 V DC
RES
Figure 21: Electrical diagram of the reset device
Using an integrated restart interlock
The restart interlock is configured once the reset pushbutton has been connected.
When the restart interlock is configured, the application diagnostic output located on
the same plug connector as the reset pushbutton signals when the reset pushbutton
needs to be pressed.
4
PROJECT PLANNING
38
O P E R A T I N G I N S T R U C T I O N S | deTem4 A/P
8024782/2019-11-19 | SICK
Subject to change without notice