The protection relay is fully modelled according to the IEC 61850 standard. The data model can include up to three logical devices where different logical nodes, representing protection and control functionality, are located. Depending on the selected functionality in the protection relay, different configurations have different set of logical devices and logical nodes. Data models also include full modelling and functionality of setting, setting groups and configuration according to the IEC 61850 concept.
- Control logical device, CTRL
- Disturbance recorder logical device, DR
- Protection logical device, LD0
All generic functionality, such as modelling of physical inputs and outputs as well as the alarming LED functionality, resides under logical device LD0.
In the IEC 61850 standard, communication services are configured through a number of data structures including data sets, report control blocks, GOOSE control blocks and setting group control blocks. Setting Group control block is located in logical device LD0 logical node LLN0. GOOSE control block can be configured under LLN0 of any logical device, and data set available under LLN0 of the corresponding logical device will be visible for mapping. Report control block can be configured under any logical node of any logical device, and data set will be visible for mapping only if it is present under the corresponding logical node.
The full data model can be exported from PCM600 in the form of a SCL file, which is defined in part 6 of the standard.