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Directive (Low Voltage)
The Low Voltage Directive concerns machinery in which electric low voltage circuits are
present. The manufacturer must compile a technical dossier, make a declaration of
conformity and affix the CE marking.
Dispersion towards ground Current (usually of reduced intensity) flowing from a wire to the ground.
Dynamic braking
The energy accumulated by the motor during the acceleration is converted into heat through the
braking resistor.
Directive (EMC)
The EMC Directive requires that all electrical and electronic devices placed on the market from 1
January 1996 must satisfy the essential requirements of electromagnetic compatibility.
The essential electromagnetic compatibility requirements are met by applying the harmonized
technical standards published in the EU Official Journal.
The harmonized standards can be essentially divided into:
• Product standards
• Generic standards
• Basic standards
E
Electric Drive
Electric power converter for controlling torque speed and position of a motor. It consists
of four main parts:
• Rectifier of AC mains voltage
• DC link voltage rectified and leveled
• Inverter of the rectified voltage in voltage with frequency and voltage variables
• Control circuit that transmits signals for the switching of the power semiconductors of
the inverter
Electric noise
Set of unwanted signals or current that overlap the useful signal typically transmitted on a
communication channel between electronic devices.
EMC
Radio frequency emitted during the electronic power equipment operation, likely to generate
or induce disturbances in other electronic equipment.
Emissions
Electromagnetic interference caused by electronic equipment operating at frequencies
likely to generate or induce disturbances.
Enable
Signal that enables the drive.
Encoder
Motor component that detects the value of the position of the shaft and transmits it
to the drive to operate the control.
Encoder incremental
Motor component that detects the incremental changes in the position of the shaft and
transmits them to drive to operate the control with information the current position.
Encoder simulated
TTL encoder signals (A, B and C) differential line drivers generated by the drive, starting
from internal information, to emulate an encoder.
Encoder sinusoidal
Motor component that detects the incremental changes in the position of the shaft and
transmits the drive to operate the control with information the current position
The
information is acquired through the reading of two sinusoidal signals sampled from the drive.
EnDat 22
Serial protocol for communication with Heidenhain encoder. Allows the reading of the position
of absolute encoders, as well as updating and saving data stored in the encoder. It is
compatible with the previous version 21 offering advantages such as the transfer of other data
together with that of position without a separate request.
EtherCAT
communication protocol implemented on the Ethernet the network for the synchronous
transmission of information
Ethernet
High speed data communication network.
F
Filter (Network)
Device that reduces noise generated by the power supply cables.
FMEA
Failure Mode and Effects Analysis.
DR2020
MAR2-E-191
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