Displaying Trip History (MicroLogic E)

Introduction

The MicroLogic E trip history displays the list of the last 10 trips.

For each trip, the following indications are recorded and displayed on three screens:

Tripping cause
Date of trip
Time of trip

Example: Display for the first (most recent) trip of the five trips recorded in the trip history.

Ir: tripping cause

: symbol indicating trip history display

1: trip number (1 being the most recent)

5: total number of trips recorded

To display trip history:

Press to scroll through the three screens of each trip.

In this example, the most recent trip recorded in the trip history is a trip caused by the long-time protection on 3rd January 2022 at 12.34 and 56 s.
Press again to see the next trip in the history.

List of Trip Screens for Possible Causes

Cause	Description	Screen display
Ir trip	Long-time protection
Isd trip	Short-time protection
Ii trip	Instantaneous protection
Ig trip	Ground-fault protection
Ap trip	Auto-protection

NOTE: Instantaneous protection trips (Ii) are indicated on the trip history screen in the same way as short-time protection trips (Isd). Both are caused by short-circuits.

Trip Date and Time

For each trip history screen, MicroLogic E trip unit will display the date and time of the trip. Every time the 24 Vdc control voltage is energized, date and time restart at January 1st 2000.

The setting of the MicroLogic E trip unit date and time requires the communication option. MicroLogic E date and time can be set manually in one of the following ways:

By using the FDM121 Front Display Module
By sending a setting command using the communication network

MicroLogic E date and time can be automatically updated:

With the IFE Ethernet interface with the following conditions:
- Ethernet interface is configured in SNTP mode.
- Ethernet interface receives an update date and time request from the SNTP server.
With the IFM Modbus-SL interface receiving an update date and time request from the SNTP server