Diagnostics; Diagnostic Messages - GE 469 Instruction Manual

5 ACTUAL VALUES

5.8DIAGNOSTICS

Some actual value messages are helpful in diagnosing the cause of Trips, Alarms, or Start Blocks. The 469 automatically
defaults to the most important message. The hierarchy is Trip and PreTrip messages, Alarm, and lastly, Start Block Lock-
out. To simplify things, the Message LED (indicator) will flash, prompting the operator to press the
is pressed, the next relevant message is automatically displayed. The 469 cycles through the messages with each key-
press. When all of these conditions have cleared, the 469 reverts back to the normal default messages.
Any time the 469 is not displaying the default messages because other Actual Value or Setpoint messages are being
viewed and there are no trips, alarms, or blocks, the Message LED (indicator) will be on solid. From any point in the mes-
sage structure, pressing the
default messages are being displayed, pressing
Example:
When an overload trip occurs, an RTD alarm may also occur as a result of the overload and a lockout time associated with
the trip. The 469 automatically defaults to the
and the Message LED flashes. Pressing the
the pre-trip data. When the bottom of this queue is reached, pressing
However, because an alarm is active, the display skips to the alarm message at the top of the
queue. Similarly, pressing
TUS
sage. Pressing
NEXT
repeated.
LAST TRIP DATA:
ACTIVE ALARMS:
START BLOCK
LOCKOUTS:
When the RESET has been pressed, the hot RTD condition is no longer present, and the lockout time has expired, the dis-
play will revert back to the normal Default Messages.
GE Multilin
Courtesy of NationalSwitchgear.com
NEXT key will cause the 469 to revert back to the normal default messages. When normal
NEXT
A1 STATUS
NEXT key cycles through the time and date stamp information as well as all of
NEXT again skips to the
once final time returns to the original
CAUSE OF LAST TRIP:
Overload
TIME OF LAST TRIP:
12:00:00.0
DATE OF LAST TRIP
Jan 01 1992
↓
↓
↓
ANALOG INPUT 4
PreTrip: 0 Units
STATOR RTD #1
ALARM: 135°C
OVERLOAD LOCKOUT
BLOCK: 25 min
469 Motor Management Relay
displays the next default message immediately.
Õ× Õ
LAST TRIP DATA CAUSE OF LAST TRIP
NEXT again normally returns to the top of the queue.
Õ×
A1 STATUS START BLOCK
CAUSE OF LAST TRIP
5.8 DIAGNOSTICS

5.8.1 DIAGNOSTIC MESSAGES

NEXT key. When
actual value message
Õ×
A1 STATUS ALARM STA-
Õ×
RESTART BLOCK LOCKOUT
message, and the cycle could be
NEXT
mes-
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