ABB REC 523 Technical Reference Manual

Contents

ABB REC 523 Technical Reference Manual Manual pdf 24 page image

241MRS750881-MUMRemote Monitoring and Control UnitTechnical Reference ManualREC 5235.1.8. CommunicationThe remote communication protocols IEC 60870-5-101, Modbus (RTU and ASCII)and DNP 3.0 are available for REC 523.The REC 523 includes SPA slave and LON serial communication protocols. In acustomer-specific configuration, special events can be generated via an EVENT230event function. EVENT230 is documented on the CD-ROM, Technical Descriptionsof Functions, refer to Section 1.8. Related documents.For more information about communication in REC 523 devices, Chapter6.Communication.5.2. Auxiliary voltageFor its operation REC 523 requires auxiliary voltage supply. The internal powersupply and charger module of the device forms the voltages required by theREC 523 electronics. The power supply module is a galvanically isolated (flyback-type)DC/DC converter. A green LED indicator on the front panel is lit when the powersupply module is in operation.When possible, the device should be supplied by an auxiliary supply voltage of thesubstation. Otherwise, a small MV auxiliary voltage transformer is recommended tobe used for the supply of the device in secondary substation applications. Nationaland local electrical safety regulations must always be followed when the device isconnected to the electrical network.5.2.1. Power supply versionsThere are two power supply and charger unit (PSC) versions available REC 523:ï PSC1ï PSC2The output voltages are identical, but the input voltages are different. The inputvoltage range of the power supply module is marked on the front panel of the device.The power supply version is specified by a letter combination in the hardwareversion number of REC 523.TOD_TO_* Type conversion from TOD to UDINT / TIME / REALTOF Off-delay timerTON On-delay timerTP PulseTRUNC_* Truncation toward zeroUDINT_TO_* Type conversion from UDINT to USINT / UINT / REALUINT_TO_* Type conversion from UINT to USINT / UDINT / REAL / BOOLUSINT_TO_* Type conversion from USINT to UINT / UDINT / REALWORD_TO_* Type conversion from WORD to DWORD / BYTETable 5.1.7-1 Standard functions available for REC 523 (Continued)Function Description