S&C Instruction Sheet 681-530
47
The Diagnostic Event Log records event messages in a fi rst-in-fi rst out basis with the most
recent events on top. Diagnostic events will remain recorded even if the control loses
power and will only be removed if more than 12 events are recorded (the oldest event
will be overwritten) or if the log is cleared manually. The Diagnostic Event log reports
on the condition of the control. A key can be found in Table 6. The Diagnostic Event log
will be used mainly by S&C Electric Company to help troubleshoot any problems with
the overcurrent control.
The Diagnostic Event Log shows the last 12 tracked diagnostic events recorded by
the overcurrent control.
Figure 39. The Diagnostic Event Log.
Report any ERROR messages to S&C Electric Company. (Contact your local S&C Sales
Office or the S&C Global Support and Monitoring Center at 1-888-762-1100 or 1-773-338-
1000 outside the U.S.) See Figure 39.
Table 6. Diagnostic Event Log Description
Event Cause
Description
Elapsed-Time Counter
Shows the start time for the elapsed-time counter .
ADC – Interrupter 1 – A Phase
Status of the analog to digital converter . An ADC error could
prevent the overcurrent control from tripping in response to an
event .
ADC – Interrupter 2 – A Phase
ADC – Interrupter 1 – B Phase
ADC – Interrupter 2 – B Phase
ADC – Interrupter 1 – C Phase
ADC – Interrupter 2 – C Phase
Power Supply 3 .3 V
State of the onboard power supply . Expected value range
41 .6 V - 61 .6 V
POWER_12 V
The expected control power for the Overcurrent Control is 12 V .
When power of less than 11 V or more than 13 V is received, the
POWER_12 V event will display .
Flash Memory Test
State of the microprocessor flash memory
FRAM Memory Test
State of the microprocessor FRAM memory
Stack Overflow
State of the microprocessor memory capacity . A stack overflow
means there is no more room in memory to store data .
CTR_OVERFLOW
The elapsed time counter overflows . The elapsed time counter
provides a relative time between events logged in the diagnostic
and trip log .
POWERUP
The control powers up . The elapsed time counter restarts at “0”
after a POWERUP and counts in minutes .
Code Memory Log
Flash memory is corrupted .
Config . Fail
Protection settings are corrupted .
Diagnostic Event Log
Viewing Event Logs
