Chapter 1: Overview; Features - Mitsubishi Electric Melsec Q Series User Manual

1 Overview

Chapter 1: Overview

1.1 Features

This manual explains specifications, handling methods, and programming of Energy
Measuring Module QE81WH (hereinafter, abbreviated as QE81WH) supporting
MELSEC-Q series.
(1) This Energy Measuring Module can measure various types of electric quantity.
It can measure electric energy, reactive energy, current, voltage, electric power,
power factor, and frequency.
Both consumption and regeneration of the electric energy can be measured.
(2) Extensive monitoring functions
In addition to memorizing the maximum and minimum values, two types of alarm
monitoring for upper and lower limit can be performed.
(3) It also can measure the electric energy for a certain period.
It can measure the electric energy for the duration of time for which the output
device is on.
This feature enables to acquire the electric energy needed during device
operation or energy per tact.
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QE81WH