REF 54_ Product Guide - ABB Oy Distribution Automation - #9

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Feeder Terminal REF 541, REF 543, REF 545. 1MRS750443-MBG Feeder terminal configuration The Relay Configuration Tool, based on the IEC 61131-3 standard, is used for configuring the basic terminal, protection and logic function blocks, control and measurement functions, timers and other functional elements included in the logic functions category. The programmable system of REF 54_ feeder terminals allows the output contacts to be operated in accordance with the state of the logic inputs and the outputs of the protection, control, measurement and condition monitoring functions. The PLC functions (e.g. interlocking and alarm logic) are programmed with Boolean functions, timers, counters, comparators and flip-flops. The program is written in a function block diagram language by using the configuration software. Mimic configuration Lon network configuration The LON Network Tool is used for binding network variables between RED 500 terminals. Typically, LON is used for transferring object status data (open, close, undefined) between units for interlocking sequences running in the units. DNP 3.0 and Modbus configuration The Protocol Mapping Tool included in the CAP 505 is used for configuring the DNP 3.0 and Modbus interfaces of the feeder terminal. Feeder terminal parameterization The parameters of the feeder terminal units can be set either locally over the HMI or externally via the serial communication. Local parameterization The control functions configured using the Relay Configuration Tool can be associated with position indicators that are part of the MIMIC configuration picture displayed on the graphic LCD of the HMI. The MIMIC configuration picture is designed with the Relay Mimic Editor. In addition, the editor is used to define the eight programmableLED indicators and the corresponding alarm texts on the front panel, the alarm modes, and the interlocking LED texts. The MIMIC picture may include a single-line diagram, measured values with units, free texts, etc. The position indicators (open, closed, undefined) are drawn according to the customer's requirements. Note that the operation of the objects themselves is determined by means of the Relay Configuration Tool. All of the eight alarm function blocks can be configured in the same alarm view of the mimic editor. ON and OFF state texts (only one language version at a time can be supported for the alarm) and LED colours can be defined. Three different colours can be used to define the ON and OFF state. Three basic modes are available: · non-latched · latched-steady · latched flashing Interlocking LED texts can also be defined in the same alarm view but the colour of the interlocking LED cannot be changed. When the parameters are set locally via the HMI, the setting parameters can be chosen from the hierarchical menu structure. The desired language for parameter description can be selected. External parameterization The Relay Setting Tool is used for parameterizing and setting the feeder terminals externally. The parameters can be set off-line on a PC and downloaded to the feeder terminal over a communication port. The menu structure of the setting tool, including views for parameterization and settings, is the same as the menu structure of the feeder terminal. Terminal connections All external circuits are connected to the terminal blocks on the rear panel. The terminal block for the measuring transformers consists of fixed screw terminals. ABB sensors (Rogowski coil or voltage divider) are connected to the feeder terminal with special type of shielded twin BNC connectors. This type of connectors are used to improve reliability and protection against disturbances. Unused sensor inputs must be short-circuited with special connectors, type 1MRS 120515. The RS232 serial interface on the rear panel is used to connecting the feeder terminal to the SPA, the IEC_103, Modbus, DNP 3.0, Profibus, or IEC 61850 bus. The SPA, IEC_103, Modbus and DNP 3.0 bus is connected through RER 123 Bus Connection Module. DNP 3.0/Modbus can also be connected through the RER 133 Bus Connection Module. 9