Diagnostic Tools; Event Menu - S&C MIcro-AT Installation, Programming, And Operation Manual

Event Menu

Table 4. Non-Field-Adjustable Items in the Event Menu
Non-Field-
Adjustable Item
EVENT:
DATE TIME ID
LEFT VOLTAGES
LT UNBALANCE
RIGHT VOLTAGES
RT UNBALANCE
SOURCE STATES
OC STATES
OPER STATES
TRANSFER STATE
FLAGWORD
See the "Appendix" page 39 .
①
Possible responses include the following:
②
Text Displayed
N/A Not Applicable
Ready Close Ready to Close Operator
Closing Closing Operator (Trip Relay Activated)
Retry Close Retrying Close Operation
Unknown Unknown or Ambiguous Data Inputs
Oper Except Operator Exception, Conflicting Data Inputs
Ready Open Ready to Open Operator
Opening Opening Operator (Trip Relay Activated)
Retry Open Retrying Open Operation
The Micro-AT control automatically records system status and the status of the device's
controller circuits each time a control operation occurs. Each such operation, referred
to as an "event," is indicated by the illumination of a lamp on the EVENT menu key and
is available for display under this menu. The last 130 events are stored in memory at any
given time.
Each event is time-marked to indicate its date and time of occurrence, and is identifi-
able by an "event ID" code number. There are a total of 85 such code numbers—each
representing a specific action by the source-transfer control; these code numbers are
listed and described in the "Appendix" on page 39.
Also recorded for each event are the operating conditions which existed at the time of
the control operation. Included are the left-source and right-source phase and unbalance
voltages and the status of the source-transfer left-source and right-source control states,
overcurrent left-source and right-source control states, and switch operator control states.
The table below summarizes the items available for dis play under the Event menu
for each of the last 130 events. (Items are listed in their order of appearance upon
consecutively pressing the NEXT item key.)
mm/dd/yy
(month/day/year)
Phase 1
NEG SEQ
Phase 1
NEG SEQ
Left-source voltage state (good, bad, or overvoltage)
Left-source overcurrent state (normal, latch, or reset)
Left-source operator state
Meaning
Operating Response
hh:mm:ss
(hour:minute:second)
Phase 2
Phase 2
Right-source voltage state (good, bad, or overvoltage)
Right-source overcurrent state (normal, latch, or reset)
②
Transfer controller state
③
16-bit flagword (for diagnostic use)
Possible responses include the following:
③
On Preferred
Timing Loss of Preferred
Verify Preferred Loss
Opening Preferred
Delay Forward Transfer
Closing Alternate
On Alternate
Time Loss Alternate

Diagnostic Tools

Event ID
①
Phase 3
ZERO SEQ
Phase 3
ZERO SEQ
Right-source operator state
②
Verify Alternate Loss
Time Return Preferred
Opening Alternate
Closing Preferred
Lockout
Manual
Exception
Delaying Return
S&C Instruction Sheet 515-600 33