Safe stop
Instruction handbook b maXX BM4400, BM4600, BM4700
Document No.: 5.12008.07
347
of 358
E
m Application example 2
Application example for machine of catego
ry 3 with two switch off channels:
Pulse enable and a second common switch off channel for safety relay 1 and safety relay 2.
Figure 118: Version with two safety relays (BM4XXX-XX2)
Here the safety relays 1 and 2 are triggered by a position switch and together generate the first
channel. The second channel is generated by the hardware pulse enable input, which is inde-
pendently triggered by the safety relay.