System design and selectable functions
Leuze electronic SOLID-2 15
TNT 35/7-24V
Review-Stand, , 8. April 2015
DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS
3.4 Additional functions of the Receiver Extended
3.4.1 Start/restart interlock (RES)
If the start/restart interlock function is activated, it prevents the safety circuits from being
released automatically when the machine is turned on or the power supply is switched on
or is restored after a power outage. The receiver only switches to the ON state by pressing
and releasing the start/resart button within a time window.
If the protective field is interrupted, the start/restart interlock function ensures that the
receiver will remain in the OFF
state after the protective field is released again. The
rece
iver will then not be switched back to the ON state until the start/restart button is
pressed and released again.
Activate the start/restart interlock:
✟ with the circuitry in the Receiver Extended (see Chapter 6.1.3)
✟ or in the downstream machine control unit
✟ or in the downstream safety PLC
Once the internal start/restart interlock is activated as described in Chapter 6.1.3, this
function is monitored dynamically. The receiver cannot be switched back to the ON state
until the start/restart button is pressed and released again within a time window of 300
ms
to 5
s, with the protective field free.
Fig. 3.4-1: Start/restart interlock function in effect when the supply voltage is turned
on
Fig. 3.4-2: The start/restart interlock function after the protective field has been
penetrated
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