GE 469 Instruction Manual

Also see for Masoneilan 469 Series: Instruction manual Instruction manual Communications guide Instruction manual Instruction manual

Contents

CHAPTER 6: ACTUAL VALUES469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL 6–376.8 Diagnostics6.8.1 Diagnostic MessagesSome actual value messages are helpful in diagnosing the cause of Trips, Alarms, or StartBlocks. The 469 automatically defaults to the most important message. The hierarchy isTrip and PreTrip messages, Alarm, and lastly, Start Block Lockout. To simplify things, theMessage LED (indicator) will flash, prompting the operator to press the NEXT key. WhenNEXT is pressed, the next relevant message is automatically displayed. The 469 cyclesthrough the messages with each keypress. When all of these conditions have cleared, the469 reverts back to the normal default messages.Any time the 469 is not displaying the default messages because other Actual Value orsettings messages are being viewed and there are no trips, alarms, or blocks, the MessageLED (indicator) will be on solid. From any point in the message structure, pressing the NEXTkey will cause the 469 to revert back to the normal default messages. When normal defaultmessages are being displayed, pressing NEXT displays the next default messageimmediately.Example:When an overload trip occurs, an RTD alarm may also occur as a result of the overload anda lockout time associated with the trip. The 469 automatically defaults to the A1 STATUSZV LAST TRIP DATA Z CAUSE OF LAST TRIP actual value message and the Message LEDflashes. Pressing the NEXT key cycles through the time and date stamp information as wellas all of the pre-trip data. When the bottom of this queue is reached, pressing NEXT againnormally returns to the top of the queue. However, because an alarm is active, the displayskips to the alarm message at the top of the A1 STATUS ZV ALARM STATUS queue. Similarly,pressing NEXT again skips to the A1 STATUS ZV START BLOCK ZV RESTART BLOCKLOCKOUT message. Pressing NEXT once final time returns to the original CAUSE OF LASTTRIP message, and the cycle could be repeated.LAST TRIP DATA: CAUSE OF LASTTRIP:OverloadTIME OF LASTTRIP:DATE OF LAST TRIPJan 01 1992↓↓↓ANALOG INPUT 4PreTrip: 0 UnitsACTIVE ALARMS: STATOR RTD #1ALARM: 135°C