FOUNDATION Fieldbus

FOUNDATION Fieldbus is used for the connection of transmitters and actuators on the field level and is based like PROFIBUS PA on the same physical bus characteristics. Both provide voltage to the field devices and can be used in hazardous areas.  SIMATIC PCS 7 relies on both systems to allow free selection of the field devices. In this way, the best-suited field device can always be used for the automation solution

Depending on the existing hardware or your preferences, you can use FOUNDATION Fieldbus (FF) in addition to PROFIBUS PA as the fieldbus for the direct connection of transmitters and actuators to the SIMATIC PCS 7 process control system. The fieldbus integrates actuators and sensors directly into the process control system in operating environments up to hazardous zone 1/21 or 0. The intrinsically-safe transmission technology MBP (Manchester Coded; Bus Powered) simultaneously provides the power supply over a two-wire line

Up to 32 bus nodes (1 coupler + field devices) can be operated on one fieldbus segment (typically 8 to 12 devices). The field devices are integrated into the fieldbus segment via active field distributors of the SIMATIC AFD product family, such as AFD4 and AFD8 (approval for hazardous zone 2/22) and AFDiSD (approval for hazardous zone 1/21)

FOUNDATION Fieldbus permits detailed diagnostics of field devices via corresponding device descriptions. It can be set up in line, tree or ring topologies. The FOUNDATION Fieldbus can be integrated seamlessly into the SIMATIC PCS 7 process control system using PROFIBUS DP as link.

Compact FF Link single and redundant configuration

SIMATIC AFD

SIMATIC AFD product family

The SIMATIC AFD product family comprises the products AFS, AFD4, AFD4 FM, AFD4 Railmount, AFD8 and AFDiSD. All components can be used both for PROFIBUS PA as well as FOUNDATION Fieldbus.

 

SIMATIC  active field distributors

Functions

AFS

AFD4

AFD4 FM

AFD4 Railmount

AFD 8

AFDiSD

Number of spur lines

0

4

4

4

8

6

Automatic bus termination

 

x

x

x

x

x

Coupler redundancy

x

x

x

x

x

x

Ring redundancy

 

x

x

x

x

x

Status LEDs

x

x

x

x

x

x

Protection class

IP66

IP66

IP66

IP66

IP66

IP66

Operating temperature

-40°…70°

-40°…70°

-40°…70°

-40°…70°

-40°…70°

-40°…70°

Repeater

 

 

 

 

 

x

PROFIBUS PA

x

x

x

x

x

x

FOUNDATION Fieldbus

x

x

x

x

x

x

Diagnostics PROFIBUS PA

 

 

 

 

 

x

Certificates

CE-approval

x

x

 

x

x

x

ATEX

x

x

 

x

x

x

Hazardous areas

Zone 2/22

Zone 2/22

Zone 2/22

Zone 2/22

Zone 2/22

Zone 1/21

IECEx

x

x

 

x

x

x

INMETRO

x

x

 

planned

x

planned

KC registration

x

x

 

x

x

x

Australia/NewZeland

x

x

 

x

x

x

EAC/Russland

x

x

 

x

x

planned

FM

 

 

x

planned