ABB XVC769AE101 3BHE006373R0101 Control Motherboard

MLink can include Fieldbus communication to DCS. The type of Fieldbus must be selected

before ordering the MLink type. The Fieldbus specific information (PROFIBUS, MODBUS etc.)

can be found in the following documents:

MNS iS Interface Manual Profibus

MNS iS Interface Manual Modbus

MNS iS Interface Manual Profinet IO

IEC 61850 complements System 800xA’s capability of using open standards to integrate fieldbus devices within process automation. 

For process electrification devices such as low voltage switchgear, variable speed drives and motor controllers, 

System 800xA supports open fieldbus standards such as Profibus and Profinet. 

For process instrumentation, System 800xA has extensive integration with HART, Profibus and Foundation Fieldbus.

Adopting IEC 61850 technology together with System 800xA also permits standardization of 

various procedures in substation configuration, control logic, control libraries and operation procedures. 

The object orientation of IEC 61850 enables standardized device models, 

supported by System 800xA through its IEC 61850 compatibility.

This includes:

 Motor starter and feeder modules (all sizes), which are equipped with measuring and

communication electronic device MControl

 Motor starter and feeder modules (all sizes), which are equipped with intelligent device,

UMC and M10x, communicates to MLink.

 Circuit breakers connected to the switchgear communication with the interface MConnect

 Circuit breakers connected to the switchgear communication with the interface MLink

Excluded from supervision in MService are all modules not connected to the internal switchgear

communication such as MSpeed (Variable Speed drives in MNS iS) and conventional modules.

REF611 is a dedicated feeder protection relay designed for the protection, control, 

measurement and supervision of utility substations and industrial power systems.