MicroLogic™ 5.0P and 6.0P Electronic Trip Units – Instruction Bulletin PDF
48049-137-05EN

MicroLogic Trip Unit Setup

Use “MicroLogic setup” menu to set display language, date and time, circuit breaker information, power sign, VT ratio and system frequency.

MicroLogic Trip Unit Setup

     

Set Language
1.

Set display language.
     

Set Date and Time
2.

Set trip unit date and time.

NOTE: If trip unit is connected to a communication network which provides date and time synchronization, date/time cannot be set from trip unit. If trip unit is not connected to a communication network which provides data and time synchronization, date and time will need to be re-entered every time trip unit power is lost.)
NOTE: In US English the date format is month/day/year. In all other languages the date format is day/month/year.

After using the test kit to do secondary injection testing, thermal imaging inhibit, ZSI testing or ground-fault inhibit, the time will need to be reset if the trip unit is not connected to a communication network providing date and time synchronization.

NOTE: If time is not synchronized by a supervisor using the network system management software, reset time semi-annually, or more often if needed.
3.

Enter circuit breaker information into trip unit memory. The following information must be entered to properly identify the circuit breaker over the communication network:

Standard—ANSI, UL, IEC or IEC/GB

Circuit Breaker Family—MasterPact (ANSI, UL, IEC or IEC/GB), PowerPact (UL or IEC) or ComPact NS (IEC)

Circuit Breaker Type—Found on the circuit breaker faceplate

Circuit Breaker Contact Wear Code–Only modified when replacing an existing trip unit with contact wear information

NOTE: The contact wear meter is active only when circuit breaker type is MasterPact.

To maintain contact wear indicator information when replacing an existing trip unit:
WARNING
Potential compromise of system availability, integrity, and confidentiality
Change default passwords at first use to help prevent unauthorized access to device settings, controls and information.
Failure to follow these instructions can result in death, serious injury, or equipment damage.

Set Circuit Breaker Information
  a. Read code on trip unit to be replaced. (The code is a hexadecimal number.)
  b. Remove old trip unit and install new trip unit in circuit breaker.
  c. Enter code from old trip unit in new trip unit.
4.

Select power sign.

Choose the signing convention to be used for power metering, energy metering and load shedding:

  • P+: Power absorbed from upstream to downstream (top fed)

  • P-: Power absorbed from downstream to upstream (bottom fed)

Default value is P+

Set Power Sign
5.

Enter VT ratio of external voltage transformer into trip unit memory. If no external voltage transformer is present, set both primary value and secondary value to 690 V.

If supply voltage for the trip unit exceeds 690 V, an external voltage transformer is required.

Set VT Ratio
6.

Enter system frequency into trip unit memory.

NOTE: When system frequency is set to 400 Hz:

  • Reactive power absolute value will be correct, but sign will be wrong.

  • PF absolute value will be correct, but sign will be wrong.

  • Frequency value may not be accurate.

  • Frequency protection is disabled.

  • Phase rotation protection is disabled.

Set System Frequency
QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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