Resetting the Circuit Breaker After a Trip Due to an Incident Detected by the MicroLogic X Self-tests

Reset Sequence

The following table shows the sequence of actions to take after a trip due to an incident detected by the MicroLogic X control unit. Further explanation of each action is given in the following paragraphs.

Step	Action
1	Identify the trip cause.
2	Press OK to view details of the trip cause on the display screen: A code that identifies the trip cause. A trip message describing the cause of the incident. The date and time that the incident occurred.
3	Consult the list of possible detected incidents and perform the actions recommended to restart after the trip.
4	Press OK to acknowledge the trip and return to the Home menu.
5	Reset the circuit breaker.
6	Press the Test/Reset button for 3 seconds to reset the latched events and switch off the trip cause LEDs and the service LED.
7	When the circuit breaker is ready to close, re-close it.

Identifying the Trip Cause

Ready LED	Service LED	MicroLogic X display screen	Trip cause LEDs	Description
Ready LED off.	Service LED on red.		All LEDs are on.	Major MicroLogic X control unit incident detected during self-test.
Ready LED flashing green.	Service LED off.		Op. LED is on.	Circuit breaker incident detected during self-test.

Recommended Actions After a Trip Due to a MicroLogic X Incident

@writer (07/2020): Events are conform to EventCensus 6.78 (08/2019), and latest events to EventCensus 6.89. Text in ‘Trip message’ column below = text in ‘eHMI Description’ in EventCensus XLS file.

@writer (07/2020): FYI: if text in ‘Trip message’ column below is different from ‘eHMI Description’ in EventCensus XLS file, it can be because the EventCensus ‘eHMI Description’ has evolved since the last update or it was decided (requester: Marketer JLeconte) to keep a more descriptive text (e.g. avoid abbreviations) for clearer understanding.

The following table indicates what action to perform according to the trip message.

For more information, refer to the event messages in DOCA0102•• MasterPacT MTZ - MicroLogic X Control Unit - User Guide.

Code	Trip message	Description	Recommended action
0x1400 0x1404 0x1405 0x1406 0x1416	Control unit self test major malfunction	The control unit self test detected a major malfunction in the control unit operation. NOTE: The malfunction trips or does not trip the circuit breaker, depending on the malfunction detected.	Plan to replace the MicroLogic X control unit.
0x1402	Internal current sensor disconnected	The control unit self test detected the disconnection of an internal sensor of the circuit breaker.	Plan to replace the MicroLogic X control unit.
0x1403	External neutral current sensor disconnected	The control unit self-test detected the disconnection of the external neutral current sensor of the circuit breaker.	Check connection of the External Neutral Current Sensor (ENCT).
0x6407	Self diagnostic trip	The circuit breaker tripped following a control unit microprocessor (Asic) invalid result.	Plan to replace the MicroLogic X control unit.
0x641F	Replace Circuit Breaker. Self Diagnostic	The circuit breaker tripped following a major malfunction of one or two internal current power supply sensors of the circuit breaker.	Replace the circuit breaker.