Control Modes

@TW: Topic shared between Mic Act User Guide and MTZ1/MTZ2/MTZ3 Circuit Breaker User guides (DOCA0265, DOCA0284, DOCA0285)

Presentation

The circuit breaker control mode is a MicroLogic Active setting which defines the source of orders to control circuit breaker operations.

Three control modes are available: Manual, Auto Local and Auto Remote control mode. The control mode is configured on the MicroLogic Active display screen, from the tree navigation menu, at Configuration > Communication.

In Manual control mode operation orders are only accepted from one of the following:

The mechanical buttons on the front of the circuit breaker.
The external pushbutton connected to the MN/MX/XF voltage releases.

In Auto Local control mode the operator needs to be close to the circuit breaker to establish communication. In addition to the sources accepted in Manual control mode, operation orders are accepted from the FDM121 display.

In Auto Remote control mode the operator does not need to be next to the circuit breaker to establish communication, and orders are accepted when sent from a remote source through the wired communication network.

In addition to the sources accepted in Manual control mode, the following sources of operation orders are accepted in Auto Remote control mode:

IFE, EIFE or IFM interfaces
IFE/EIFE webpages

The control mode factory setting is Manual control mode.

Enabling Operation Orders Through Communication

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH Do not use MX1 and XF voltage releases of power supply above 250 Vac/dc, with the BCIM module. Do not use MicroLogic Active remote control functions in a safety chain. Failure to follow these instructions will result in death or serious injury.

In order to enable operation orders through wired communication:

The prerequisites for using ULP wired connection must be met.
The MicroLogic Active control unit must be in Auto Local control mode or Auto Remote control mode.
Control of the MX/XF communicating voltage releases by the BCIM module must be enabled. This is done on the MicroLogic Active display screen, from the tree navigation menu, at Configuration > BCIM.

Source of Operation Orders According to Control Mode

The following table summarizes the available sources of operation orders, depending on the control mode:

Control mode	Type of order and delivery method
	Mechanical	Electrical	Through wired communication
	Pushbutton	Point to point (voltage release)	FDM121 display	Communication network	IFE/EIFE Webpages
Manual	✔	✔	–	–	–
Auto Local	✔	✔	✔	–	–
Auto Remote	✔	✔	–	✔	✔

Operation in Manual Control Mode

The following example shows available control paths in Manual control mode in a system consisting of a MicroLogic Active control unit, ULP port module and EIFE interface.

A MicroLogic Active control unit

B ULP port module

C EIFE embedded Ethernet interface

D Circuit breaker mechanism

Opening and closing operations available in Manual control mode:

0: mechanical opening pushbutton
1: mechanical closing pushbutton
External pushbuttons wired by customer, and connected to:
- XF: standard, reinforced, or communicating closing voltage release
- MX: standard, reinforced, or communicating opening voltage release
- MN: standard or reinforced undervoltage release

Operation in Auto Local Control Mode

The following example shows available control paths in Auto Local control mode in a system consisting of a MicroLogic Active control unit, ULP port module and EIFE interface.

A MicroLogic Active control unit with BCIM module

B ULP port module

C EIFE embedded Ethernet interface

D Circuit breaker mechanism

Opening and closing operations available in Auto Local control mode:

0: mechanical opening pushbutton
1: mechanical closing pushbutton
External pushbuttons wired by customer, and connected to:
- XF: communicating closing voltage release
- MX: communicating opening voltage release
- MN: standard or reinforced undervoltage release
FDM121 display

Operation in Auto Remote Control Mode

The following example shows available control paths in Auto Remote control mode in a system consisting of a MicroLogic Active control unit, ULP port module and EIFE interface.

A MicroLogic Active control unit with BCIM module

B ULP port module

C EIFE embedded Ethernet interface

D Circuit breaker mechanism

Opening and closing operations available in Auto Remote control mode:

0: mechanical opening pushbutton
1: mechanical closing pushbutton
External pushbuttons wired by customer, and connected to:
- XF: communicating closing voltage release
- MX: communicating opening voltage release
- MN: standard or reinforced undervoltage release
Wired communication network
Remote command through IFE/EIFE Webpages

Setting and Displaying the Control Mode

The control mode is set and displayed on the MicroLogic Active display screen from the tree navigation menu, at Configuration > Communication > Control Mode.

Predefined Events

Changing the control mode settings generates the following events:

Code	Event	History	Severity
0x1002 (4098)	Manual mode enabled	Operation	Low
0x1004 (4100)	Local mode enabled	Operation	Low