Event Recorder; Waveform Capture - GE 469 Communications Manual

COMMUNICATIONS GUIDE

Event Recorder

Waveform Capture

469 MOTOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
Table 1: Default assignments for User-Definable Memory Map Area
USER MAP ADDRESS #
User Map Address #36
User Map Address #37
User Map Address #38
User Map Address #39
User Map Address #40
User Map Address #41
User Map Address #42
User Map Address #43
User Map Address #44
User Map Address #45
User Map Address #46
User Map Address #47
User Map Address #48
User Map Address #49
User Map Address #50
User Map Address #51
User Map Address #52
User Map Address #53
User Map Address #54
User Map Address #55
The 469 event recorder data starts at address 3000h. Address 3003h is a pointer to the
event of interest (1 representing the latest event and 256 representing the oldest event). To
retrieve Event 1, write '1' to the Event Record Selector (3003h) and read the data from
3004h to 3035h. To retrieve Event 2, write '2' to the Event Record Selector (3003h) and read
the data from 3004h to 3035h. All 256 events may be retrieved in this manner. The time
and date stamp of each event may be used to ensure that all events have been retrieved in
order without new events corrupting the sequence of events (Event 1 should be more
recent than Event 2, Event 2 should be more recent than Event 3, etc.).
Each communications port can individually select an Event ID number by writing address
to 3003h. This allows the front port, rear port, and auxiliary port to read different events
from the event recorder simultaneously.
The 469 stores a number of cycles of A/D samples each time a trip occurs in a trace buffer.
The trace buffer is partitioned according to the
setpoint. The Trace Memory Trigger is set up with the
setpoint and this determines how many pre-trip and post-trip cycles are stored.
TRIGGER
The trace buffer is time and date stamped and may be correlated to a trip in the event
record. 10 waveforms are captured this way when a trip occurs. These are the 3 phase
currents, 3 differential currents, ground current and 3 voltage waveforms. This information
is stored in volatile memory and will be lost if power is cycled to the relay.
MODBUS
USER ASSIGNED
REGISTER
ADDRESS (HEX)
ADDRESS (HEX)
0123 032B
0124 032C
0125 0340
0126 0341
0127 0342
0128 0343
0129 0348
012A 0370
012B 0371
012C 0372
012D 0374
012E 0375
012F 0376
0130 030D
0131 030E
0132 030F
0133 02D5
0134 02D6
0135 02D7
0136 02D8
S1 PREFERENCES  TRACE MEMORY BUFFERS
MODBUS MEMORY MAP
DESCRIPTION
RTD #11 temperature
RTD #12 temperature
Vab
Vbc
Vca
Average line voltage
System frequency
Power factor
Real power (1st word)
Real power (2nd word)
Reactive power (1st word)
Reactive power (2nd word)
Apparent power
Phase A differential current
Phase B differential current
Phase C differential current
Assignable switch #1 status
Assignable switch #2 status
Assignable switch #3 status
Assignable switch #4 status
S1 PREFERENCES  TRACE MEMORY
15