Schneider Electric Industries Sas

Schneider Electric Industires Sas

Gerard Gomez

Pascal Chapier

David R Brown

Shuai Wu

Jean Jacques Adragna

A method assesses the rotational speed of a machine, and more particularly the rotational speed of a rotating equipment prime mover controlled by a governor. Such machines include turbo machinery and relate to a measurement device for measuring speed. The method measures a number of pulses during a measurement interval, determines a portion of a pulse pattern, determines an integration period, and calculates the rotational speed based on the portion of the pulse pattern.

Method for assessing a rotational speed of an engine

The invention relates to an input module () for a programmable logic controller able to be connected to a plurality of elements of an automated chain, the module () comprising:

Input module for programmable logic controller

A method includes electing an item of active master equipment from two redundant primary and secondary master items of equipment (), the primary and secondary master items of equipment () being directly connected to a fieldbus () and linked together by a terminal cable () and each having an active operating mode and a standby mode. Each of the primary and secondary master items of equipment () also has one and the same state machine () for designating one of the primary and secondary master items of equipment () as the active master item of equipment, and the terminal cable () used for establishing a directional relation of the primary master item of equipment () to the secondary master item of equipment ().

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Le Broc, France

Gerard Gomez