3
Safety conditions
Requirements on external safety controllers and safety relays
Manual – MOVIGEAR
®
B
17
– When connected, the switch-off test pulses may not be longer than 1 ms. The
next pulse blanking cannot reoccur earlier than after 20 ms.
<1 ms
>20 ms
t
High: no STO
Low: STO active
9007201720642187
3.3.1
Sample circuit "safety relay"
The following figure shows the basic connection of an external safety relay (according
to the requirements listed above) to MOVIGEAR
®
.
The information in the respective manufacturer's data sheets must be observed for
connection.
[4]
[3]
[1]
[5]
[6]
[2] U
2466502411
[1] Safety relay with approval
[4] STO signal
[2] DC 24 V voltage supply
[5] Reset button for manual reset
[3] Fuses in accordance with the manu-
facturer's specifications of the safety
relay
[6] Permitted emergency stop actuating
device
22746250/EN – 12/2016
