ABB REL 301 Instruction Leaflet

Also see for REL 301: Instruction manual Instruction manual

Contents

ABB REL 301 Instruction Leaflet Manual pdf 98 page image

I.L. 40-386.44-74. 6. COMMUNICATION PORT(S) USE4.6.1 IntroductionREL 301/302 can be communicated with for target data, settings, etc., through the man-ma-chine interface (MMI), The relay can also be communicated with via one of the communication(comm.) ports. Comm port communications, provides the user with more information than isavailable with the MMI. For example, all 16 targets are available and a more friendly user inter-face for settings can be accessed (all settings are displayed on a single screen on the user’sPC). This section will provide the details of the comm port options, personal computer require-ments, connecting cables and all information necessary to communicate with and extract datafrom the relay. Additional communications details are contained in I.L. 40-603, (RCP) RemoteCommunication Program. As stated in Section 1.5, RCP is required for all comm. port com-munications. Information about the communications protocol can be found in the RCP I.L.4.6.2 Communication Port OptionsREL 301/302 is supplied with a rear communications port. If the network interface is not speci-fied, a RS-232C (hardware standard) communications port is supplied. Network interfacecomm. port option, NET-PONI (see I.L. 40-611 for details) allows the connection of the relaywith many other devices to a 2-wire network. A detailed discussion of networking capabilitiescan be found in AD 40-600, Substation Control and Communications Application Guide.RS-232C, rear comm. ports are of the removable, Product Operated Network Interface (PONI)type and are available in two styles. One is identified by a 25 pin (DB-25S) female connector, itis usually black and has a single data comm. rate of 1200 bps. The second style is a RS-PONI(see I.L. 40-610 for details) identified by a 9 pin (DB-9P) male connector and externally acces-sible dip switches (next to the connector) for setting the communication data rate. This port op-tion is always black in color, can be set for speeds of 300, 1200, 2400, 4800, or 9600 bps (seeTable 4-7) and offers an option for IRIG-B time clock, synchronization input.Front communications is another comm. port option. The front panel RS-232C communicationsport, is supplied with a 9 pin (DB-9S) female connector and can be configured for 300, 1200,2400, 2400, 4800, 9600, or 19200 bps. Data comm. rate choice is made by dip switch settingswhich will be discussed later in this chapter.4.6.3 Personal Computer RequirementsCommunication with the relay requires the use of Remote Communication Program (RCP) re-gardless of the comm. port option. RCP is supplied by ABB Relay Division and is run on a per-sonal computer (PC).To run the program requires an IBM AT, PC/2 PC or true compatible with a minimum of 640kilobytes of RAM, 1 hard disk drive, a RS-232C comm. port and a video graphics adapter card.The PC must be running Version 3.3, or higher, MS-DOS.4.6.4 Connecting CablesWith each comm. port option the connecting cable requirement can be different. Also, connect-ing directly to a PC or connecting to a modem, for remote communication, affects the connectingcable requirements. Table 4-5 provides a summary of a plug pin assignments, pins required andcable connectors.Some terminology will be defined to aid the user in understanding cable requirements in Table4-5. Reference, is often made to the “RS-232C” standard, for data communication. The RS-