Readout Mode - ComPacT NSX MicroLogic 5/6/7

Measurement Readout

MicroLogic 5 and 6 trip units and MicroLogic 7 trip units with integrated earth-leakage protection have the same five navigation keys. The appearance of the keys differs, as shown in the following table:

MicroLogic 5 and 6 trip unit	MicroLogic Vigi 7 trip unit

The following examples use the keys of the MicroLogic 5 and 6 trip units to illustrate navigation for readout and setting modes. For MicroLogic Vigi 7 trip units, navigation is made in the same way.

A measurement is read using the and keys.

The keys are used to select the measurement to be displayed on-screen. The associated navigation arrows indicate the navigation options:
- : possible to press the key
- : possible to press the key
- : possible to press either of the two keys
For the current and voltage measured quantities, the navigation key can be used to select the metering screen for each of the phases:
- The down arrow indicates the phase relating to the measurement value displayed.
  
  Examples:
  
  Quantity measured on phase 2
  
  Quantity measured on all 3 phases
- Press the key successively to scroll through the metering screens. Scrolling is cyclical.

Example of Measurement Readout

The following table gives the readout values of the 3 phase currents, the phase-to-phase voltage V12, and the total active power (Ptot):

Step	Action	Using	Display
1	Select the Instantaneous measurement readout mode (the most heavily loaded phase is displayed). Read the value of current I2.
2	Select the next current measurement: current I3. Read the value of current I3.
3	Select the next current measurement: current I1. Read the value of current I1.
4	Select the phase-to-phase voltage V12 measurement. Read the value of voltage V12.
5	Select the Ptot power measurement. Read the Ptot active power.

Energy Meter Readout

Energy meters change measurement unit automatically:

For active energy, Ep, displayed in kWh from 0 to 9999 kWh then in MWh
For reactive energy, Eq, displayed in kVARh from 0 to 9999 kVARh then in MVARh
For apparent energy, Es, displayed in kVAh from 0 to 9999 kVAh then in MVAh

When energies are indicated in MWh, MkVARh, or MVAh, the values display on 4 digits. The MicroLogic trip unit incorporates the option of full energy meter readout.

NOTE: The energy meter can be reset with the padlock locked or unlocked.

Reading Full Energy Values

The following table gives the full readout values of the Ep active energy meter.

Step	Readout value	Action
1	Current in most heavily loaded phase	Select the Readout and reset the energy meter mode (main screen displayed).
2	Energy with Reset option showing	Select the Ep active energy meter. The value displayed is 11.3 MWh (in the example), which corresponds to 10 MWh +1300 kWh (approximately).
3	Specific energy measurement	Specify the measurement. The value displayed is 1318 kWh (in the example): the full energy meter value is 11318 kWh.
4	Energy normal display	Return to the energy meter normal display. The display reverts automatically after 5 minutes.

Resetting Energy Meter

The energy meters can be reset with the padlock locked or unlocked .

Step	Readout value	Action
1	Current in most heavily loaded phase	Select the Measurement readout and reset energy meter mode (main screen displayed).
2	Energy with Reset option showing	Select the energy meter to be reset.
3	Reset option lit	Validate the reset. The OK pictogram blinks.
4	OK	Confirm the reset. The confirmation OK is displayed for 2 s.

Resetting Peak Demand Values

The peak demand values can be reset with the padlock locked or unlocked .

Step	Readout value	Action
1	Main screen	Select the Readout and reset peak demand values mode (main screen displayed).
2	Peak demand with Reset option showing	Select the peak demand to be reset.
3	Reset option lit	Validate the reset. The OK pictogram blinks.
4	OK	Confirm the reset. The confirmation OK is displayed for 2 s.

Protection Function Readout

A protection function is selected using the key. This selection is only possible in Readout mode, that is, when the padlock is locked.

Scrolling is cyclical.
The up arrow indicates the selected protection function.

For the neutral protection functions, the down arrow, pointing to N, replaces the up arrow.

Example: Ir pickup selected

Example of Protection Function Readout

Readout of the setting values for the long-time protection Ir pickup, tr time delay, and the short-time protection Isd pickup:

Step	Readout value	Action
1	Long-time protection Ir pickup setting value in amperes	Select the Protection function readout mode (main screen displayed). The long-time protection Ir pickup setting value is displayed in amps.
2	Long-time protection tr time delay setting value in seconds	Select the long-time protection tr time delay. The long-time protection tr time delay setting value is displayed in seconds.
3	Short-time protection Isd pickup setting value in amperes	Select the short-time protection Isd pickup The short-time protection Isd pickup setting value is displayed in amps.

Step

Readout value

Action

Using

Display

1

Long-time protection Ir pickup setting value in amperes

Select the Protection function readout mode (main screen displayed).

The long-time protection Ir pickup setting value is displayed in amps.

2

Long-time protection tr time delay setting value in seconds

Select the long-time protection tr time delay.

The long-time protection tr time delay setting value is displayed in seconds.

3

Short-time protection Isd pickup setting value in amperes

Select the short-time protection Isd pickup

The short-time protection Isd pickup setting value is displayed in amps.

Neutral Status Readout (3-Pole Trip Unit)

The Neutral status readout mode is dedicated to this function. Navigation is therefore limited to the key.

Step	Readout value	Action	Using	Display
1	Neutral status is displayed	Select the Neutral status readout mode. The neutral status value is displayed: N: Neutral protection active (3-pole trip unit with ENCT option declared) noN: Neutral protection not active (3-pole trip unit without ENCT option or with ENCT option not declared)

Step

Readout value

Action

Using

Display

1

Neutral status is displayed

Select the Neutral status readout mode.

The neutral status value is displayed:

N: Neutral protection active (3-pole trip unit with ENCT option declared)
noN: Neutral protection not active (3-pole trip unit without ENCT option or with ENCT option not declared)

BSCM Modbus SL/ULP Module Settings Readout (MicroLogic 5/6 Trip Units Only)

Only for MicroLogic 5 and 6 trip units, BSCM Modbus SL/ULP module settings are read by pressing the key for five seconds.

It is not necessary to unlock the settings with the lock/unlock microswitch to read the BSCM Modbus SL/ULP module settings.

Press the key successively to scroll through the setting screens.

Scrolling is cyclical.

The following BSCM Modbus SL/ULP settings can be read:

The Modbus address
The Baud rate
The parity