Siemens ET 200pro Operating Instructions Manual page 76

Connection
4.3 Electrical Configuration of ET 200pro
ET 200pro configuration with CM IM PN PP FO connection module
The figure below shows the electrical potentials of an ET 200pro configuration with a
CM IM PN PP FO connection module on the IM154-4 PN High Feature interface module
(6ES7154-4AB10-0AB0).
①
②
Figure 4-6
Line protection
Line protection is required in accordance with DIN VDE 0100, in other words you always
need to provide external fusing:
● Interface module:
Protection of the 1L+ electronics/encoder supply with miniature circuit-breaker
24 V DC/16 A, tripping characteristic type B or C.
● Interface module/integrated power module, and power module:
Protection of the 2L+ load voltage supply with miniature circuit-breaker 24 V DC/16 A,
tripping characteristic type B or C.
Note
A miniature circuit-breaker 24 V DC/16 A with tripping characteristics type B trips before
the equipment fuse is tripped.
A miniature circuit-breaker 24 V DC/16 A with tripping characteristics type C trips after the
equipment fuse trips.
76
Backplane bus
Main ground line
ET 200pro configuration with CM IM PN PP FO connection module
ET 200pro distributed I/O system
Operating Instructions, 03/2013, A5E00335544-08