Tag: SR469-P5-HI-A20-E

Fault diagnostics are provided through pretrip data, event record, trace memory, and statistics. Prior to issuinga trip, the 469 takes a snapshot of the measured parameters and stores them with the cause of the trip. Thispre-trip data may be viewed using the [ NExT key before the trip is reset, or by accessing the A1 STATUS /LAST TRlP DATA actual values. The 469 event recorder stores up to 40 time and date stamped events includingthe pre-trip data. Each time a trip occurs, the 469 stores a trace of 8 cycles pre-trip and 8 cycles post-trip for almeasured AC quantities. Trip counters record the number of occurrences of each type of trip. vinimum andmaximum values for RTDs and analog inputs are also recorded. These features enable the operator to pinpointa problem quickly and with certainty.
Power metering is built into the 469 as a standard feature. The table below outines the metered parametersavailable either through the front panel or communications ports.
The 469 is equipped with 3 fully functional and independent communications ports. The front panel RS232 pormay be used for 469 setpoint programming, local interrogation or control, and upgrading of 469 firmware. TheComputer RS485 port may be connected to a PLC, DCS, or PC based user interface program. The AuxiliaryRS485 port may be used for redundancy or simultaneous interrogation and/or control from a second PLCDCS, or PC software.
There are also four 4 to 20 mA or 0 to 1 mA (as specified with order) transducer outputs that may be assignedto any measured parameter. The range of these outputs is scalable.

The 469 is packaged in the standard GE Power Management SR series arrangement, which consists of a dra-wout unit and a companion fixed case, The case provides mechanical protection to the unit and is used tomake permanent connections to all external equipment. The only electrical components mounted in the caseare those reguired to connect the unit to the external wiring. Connections in the case are fitted with mecha.nisms required to allow the safe removal of the relay unit from an energized panel (for example, automatic CTshorting). The unit is mechanically held in the case by pins on the locking handle that cannot be fully lowered tothe locked position until the electrical connections are completely mated. Any 469 can be installed in any 469case, except for custom manufactured units that are clearly identified as such on both case and unit, and areequipped with an index pin keying mechanism to prevent incorrect pairings.
No special ventilation requirements need to be observed during the installation of the unit. The 469 can becleaned with a damp cloth.