Local Indications

The MicroLogic Active control unit and circuit breaker status are indicated locally by:

The MicroLogic Active display screen
The Status bar
The Ready LED
The trip cause LEDs

The availability of local indications depends on how the MicroLogic Active control unit is supplied:

By external power supply: 24 Vdc auxiliary power supply or Mobile Power Pack connected to the USB-C port.
By internal power supply: current flowing through the circuit breaker.

Under normal operating conditions:

The MicroLogic Active display screen displays the good health state screen when quick view scrolling is active.
The Status bar is green.
The Ready LED flashes green.
All trip cause LEDs are off.

When a trip event occurs:

The MicroLogic Active display screen displays a pop-up message if the control unit is adequately supplied. The screen color is red.

If the control unit is not adequately supplied, the MicroLogic Active display screen is off.
The Status bar blinks red.
The Ready LED flashes green or is off, depending on whether the control unit is adequately supplied, and the severity of the event.
Each trip cause LED blinks red or is off, depending on the type of event.

When an alarm event occurs:

The MicroLogic Active display screen displays a pop-up message if the control unit is adequately supplied. The screen color is red or orange, depending on the severity of the event.

If the control unit is not adequately supplied, the MicroLogic Active display screen is off.
The Status bar is red or orange, depending on the severity of the event.
The Ready LED flashes green or is off, depending on whether the control unit is adequately supplied, and the severity of the event.
The L trip cause LED is red or off, depending on the type of event. All other trip cause LEDs are off.

Indications With External Power Supply

When the MicroLogic Active control unit is supplied by an external power supply (24 Vdc auxiliary power supply or Mobile Power Pack), local indications are available on:

The MicroLogic Active display screen
The Status bar
The Ready LED
The trip cause LEDs

NOTE: The display screens shown are examples. The message on the screen varies depending on the cause of the trip or alarm.

Description	Display screen	Status and Trip cause LED display	Status and Trip cause LED description
The circuit breaker is in a good state of health. No action is required.			Ready LED: green flashing Status bar: green on ERMS LED: off All trip cause LEDs off
Medium severity alarm: action to be planned			Ready LED: green flashing Status bar: orange on ERMS LED: off All trip cause LEDs off
Overload pre-alarm: 90% Ir < Current < 105% Ir			Ready LED: green flashing Status bar: orange on ERMS LED: off L trip cause LED: red on
Ground-fault alarm : Ig current ≥ 80 % Ig			Ready LED: green flashing Status bar: orange on ERMS LED: off G trip cause LED: red on
High severity alarm: immediate action required			Ready LED: green flashing Status bar: red on ERMS LED: off All trip cause LEDs off
Overload alarm : Current ≥ 105 % Ir			Ready LED: green flashing Status bar: red on ERMS LED: off L trip cause LED: red on
Trip on long-time protection (L)			Ready LED: green flashing Status bar: red blinking ERMS LED: off L trip cause LED: red blinking
Trip on short-time protection (S)			Ready LED: green flashing Status bar: red blinking ERMS LED: off S trip cause LED: red blinking
Trip on instantaneous protection (I)			Ready LED: green flashing Status bar: red blinking ERMS LED: off I trip cause LED: red blinking
Trip on ground-fault protection (G)			Ready LED: green flashing Status bar: red blinking ERMS LED: off G trip cause LED: red blinking
Fast trip or customized trip on other protection (O) NOTE: This feature will be available in future releases.			Ready LED: green flashing Status bar: red blinking ERMS LED: off O trip cause LED: red blinking
Major internal incident detected. See Maintenance and Diagnostic Functions.			Ready LED: off Status bar: red blinking ERMS LED: off All trip cause LEDs: red blinking

Indications Without External Power Supply

Without an external power supply, the MicroLogic Active control unit is supplied by the current transformers (CT) when the MasterPacT MTZ circuit breaker is closed.

In this case, local indications depend on the load current:

When the load current is less than 20% In, local indications are available on:
- The Status bar
- The Ready LED
- The trip cause LEDs
The MicroLogic Active display screen is off.
When the load current is higher than 20% In, local indications are available on:
- The MicroLogic Active display screen
- The Status bar
- The Ready LED
- The trip cause LEDs

NOTE: The display screens shown are examples. The message on the screen varies depending on the cause of the trip or alarm.

Indications without external power supply	Display screen (only when load current higher than 20% In)	Status and Trip cause LED display	Status and Trip cause LED description
The circuit breaker is in good state of health, No action is required			Ready LED: green flashing Status bar: green on ERMS LED: off All trip cause LEDs off
Medium severity alarm: action to be planned			Ready LED: green flashing Status bar: orange on ERMS LED: off All trip cause LEDs off
Overload pre-alarm: 90% Ir < Current < 105% Ir			Ready LED: green flashing Status bar: orange on ERMS LED: off L trip cause LED: red on
Ground-fault alarm: Ig current ≥ 80 % Ig			Ready LED: green flashing Status bar: orange on ERMS LED: off G trip cause LED: red on
High severity alarm: immediate action required			Ready LED: green flashing Status bar: red on ERMS LED: off All trip cause LEDs off
Overload alarm: Current ≥ 105 % Ir			Ready LED: green flashing Status bar: red on ERMS LED: off L trip cause LED: red on

Indications After a Trip, Without External Power Supply

If a trip event happens while the MicroLogic Active control unit is not supplied by an external power supply, the internal battery provides a backup supply to the MicroLogic Active control unit.

In this case, local indications are available on:

The Status bar
The Ready LED
The trip cause LEDs

The MicroLogic Active display screen is off.

The status bar and the trip cause LEDs switch off after 2 hours. Use the button to switch on the status bar and the trip cause LEDs.

Indications after a trip event, wthout external power supply	LED display	LED description
Trip on long-time protection (L)		Ready LED: off Status bar: red blinking ERMS LED: off L trip cause LED: red blinking
Trip on short-time protection (S)		Ready LED: off Status bar: red blinking ERMS LED: off S trip cause LED: red blinking
Trip on instantaneous protection (I)		Ready LED: off Status bar: red blinking ERMS LED: off I trip cause LED: red blinking
Trip on ground-fault protection (G)		Ready LED: off Status bar: red blinking ERMS LED: off G trip cause LED: red blinking
Trip on other protection (O) NOTE: This feature will be available in future releases.		Ready LED: off Status bar: red blinking ERMS LED: off O trip cause LED: red blinking
Major internal incident detected. See Maintenance and Diagnostic Functions.		Ready LED: off Status bar: red blinking ERMS LED: off All trip cause LEDs: red blinking