For interworking of burner control units PFU to PROFIBUS DP. With the PFA 700 in module subrack BGT SA-9U/1-DP700, a maximum of nine burner control units PFU 760 can be controlled via the PROFIBUS DP, while
with the PFA 710 in module subrack BGT SA-8U/1-DP710, the maximum is eight burner control units PFU 780.
The fieldbus interface PFA 700/710, together with the module subrack BGT, complies with the Low Voltage Directive (2014/35/EU) and the EMC Directive (2014/30/EU). It includes an integrated power supply for the bus interface and the inputs of the burner control units as well as code switches for addressing.