Technical information

Deltabar M PMD55
6 Endress+Hauser
Communication protocol • 4 to 20 mA with HART communication protocol
• PROFIBUS PA
– The Endress+Hauser devices meet the requirements of the FISCO model.
– Due to the low current consumption of 11 mA ± 1 mA, the following number of devices can be operated
on one bus segment if installing as per FISCO:
– up to 8 Deltabar M for Ex ia, CSA IS and FM IS applications
– up to 31 Deltabar M for all other applications, e.g. in non-hazardous areas, Ex nA, etc.
Further information on PROFIBUS PA can be found in Operating Instructions BA00034S "PROFIBUS DP/
PA: Guidelines for planning and commissioning" and in the PNO Guideline.
• FOUNDATION Fieldbus
– The Endress+Hauser devices meet the requirements of the FISCO model.
– Due to the low current consumption of 16 mA ± 1 mA, the following number of devices can be operated
on one bus segment if installing as per FISCO:
– up to 6 Deltabar M for Ex ia, CSA IS and FM IS applications
– up to 22 Deltabar M for all other applications, e.g. in non-hazardous areas, Ex nA, etc.
Further information on FOUNDATION Fieldbus, such as requirements for bus system components can be
found in Operating Instructions BA00013S "FOUNDATION Fieldbus Overview".