Baumuller BM4400 - Application Expansions; C.3.5 Application Expansions

Safe stop
Instruction handbook b maXX BM4400, BM4600, BM4700
Document No.: 5.12008.07 Baumüller Nürnberg GmbH
346
of 358
C.3
C.3.5 Application expansions
The safety function „Safe stop“ is provided via three independent switch off channels and a
hardware pulse enable input (category 4 according to EN ISO 13849-1) at the b maXX 4000
converter (BM4X3X-XX2 to BM4X7X-XX2).
However, in many ranges it is not required to operate „Safe Stop“ in category 4.
In the following, application examples are viewed, at which only two of the three switch off chan-
nels are used.
m Applic
ation example 1
Application example for machine of category 3 with h
ardwired pulse enable input and process
data communication via a field bus. 
Switching off occurs by means of safety relay 1 and safety relay 2.
Figure 117: Version with two safety relays (BM4XXX-XX2)
Herd the hardware pulse enable input (X3:5) is hardwired. The activation of the „Safe Stop“ is
made with two channels via the safety relay 1 and 2 (X102:3 / X103:3).
The release of the converter and the process data communication is made via field bus.