Siemens SIMATIC AFD4 Product Information page 21

Tools required
● Cross-tip screwdriver size 4
● Open ring wrench 20 mm
● Screwdriver with 3 mm blade
● Small knife, diagonal cutter or FC stripping tool
Required accessories
● Bus cable (cable type A)
● Sealing plugs for unused connections (10), 6ES7157-0AG80-1XA1
Stripping dimensions bus cable
For secure connection of the wires in the screw-type terminals, observe the following
stripping dimensions of the bus cables for the main lines and spur lines.
Stripping dimensions
Direct grounding
Commissioning plants with active field distributors AFD4 / AFD4 (FM) / AFD8
NOTICE
Bus system failure
If the event of a fault, the bus system may fail completely or partially.
Before you commission a plant with ring redundancy, check the redundancy function by
means of a line interruption/short circuit or by opening the IP30 covers on each AFD4 /
AFD4 (FM) / AFD8 (opening the IP30 covers is also interpreted as a fault).
Extending plants with active field distributors AFD4 / AFD4 (FM) / AFD8
NOTICE
Fault on the main line due to connection of spur lines
If a plant is already in operation, first connect the spur lines to the field devices followed by
the main lines. This sequence reduces interference on the main line.
Active field distributors AFD4, AFD4 (FM), AFD8 and AFS
Product Information, 02/2015, A5E03775304-AC
2.4 Connecting the field bus to the active field distributors AFD4 / AFD4 (FM) / AFD8
Length of stripping
a
Installing and connecting
Main line
T1, T2
90 mm
Spur lines
S1-S8
70 mm
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