Diagnostics - GE 469 Instruction Manual

CHAPTER 6: ACTUAL VALUES
6.8

Diagnostics

6.8.1 Diagnostic Messages
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
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 Lockout. 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
NEXT
through the messages with each keypress. 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
settings 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 message structure, pressing the
key will cause the 469 to revert back to the normal default messages. When normal default
messages are being displayed, pressing
immediately.
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
 
LAST TRIP DATA CAUSE OF LAST TRIP
flashes. Pressing the
NEXT
as all of the pre-trip data. When the bottom of this queue is reached, pressing
normally returns to the top of the queue. However, because an alarm is active, the display
skips to the alarm message at the top of the
pressing again skips to the
NEXT
message. Pressing
LOCKOUT
message, and the cycle could be repeated.
TRIP
LAST TRIP DATA:
ACTIVE ALARMS:
displays the next default message
NEXT
actual value message and the Message LED
key cycles through the time and date stamp information as well
A1 STATUS

A1 STATUS START BLOCK
once final time returns to the original
NEXT
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
key. When
NEXT
A1 STATUS
NEXT
queue. Similarly,

ALARM STATUS

RESTART BLOCK
CAUSE OF LAST
↓
↓
↓
NEXT
again
6–37