Installing and connecting
2.4 Connecting the field bus to the active field distributors AFD4 / AFD4 (FM) / AFD8
Active field distributors AFD4, AFD4 (FM), AFD8 and AFS
20
Product Information, 02/2015, A5E03775304-AC
Terminal assignment
Connect the wires of the bus cables using the screw-type terminals on the terminal block.
Figure 2-8
Terminal block AFD4 / AFD4 (FM) / AFD8
Table 2- 1
Terminal assignment on the active field distributor AFD4 / AFD4 (FM) / AFD8
Connection
Terminal
Assignment
T1, T2
Main line
+
Data line
-
Data line
S1 to S4 / S8
Spur line to the field devices
+
Data line
-
Data line
Basic procedure
1.
Prepare the bus cable.
2.
Connect the bus cable:
–
Open the field distributor.
–
Connect the wires to the terminal block.
–
Close the field distributor.
Preparation of the AFD4 (FM)
Note
Replace blanking caps with UL- or CSA-approved lead-throughs for connection of additional
field devices.
The customer must use a screwed gland and a cable as specified for the application
according to NEC and CEC. The installation must conform to the relevant requirements of
the National Electrical Code® (ANSI/NFPA-70 (NEC®).
Requirement
●
Active field distributor is mounted and grounded.
