Glossary - Pilz PMCprotego D.48 Operating Manual

Glossary

Absolute encoder
Encoder that provides an absolute value for
each position. The absolute value corresponds
directly to the position of the detected machine
component.
Brake resistor
Resistor that converts electrical energy into
thermal energy, generated when a motor is
braked
Electromagnetic compatibility (EMC)
System's properties with regard to noise emis-
sion and noise immunity
Emergency stop
EN 60204-01, Annex E: "Emergency stop; an
emergency operation intended to stop a pro-
cess or a movement that has become hazard-
ous."
Emergency switching off
EN 60204-1, Annex E: "Emergency switching
off; an emergency operation intended to switch
off the supply of electrical energy to all or a
part of an installation where a risk of electric
shock or another risk of electrical origin is in-
volved."
Encoder
Encoder to detect angle changes (rotational
movement)
Encoder
Incremental encoder or absolute encoder,
which detects the current position of a motor
shaft or drive unit and converts it into an elec-
trical signal
EtherNet/IP
Open industrial standard, which expands the
classic Ethernet with an industrial protocol; this
standard was drawn up jointly by ControlNet
International (CI) and the Open DeviceNet
Vendor Association (ODVA), with help from the
Industrial Ethernet Association (IEA).
Operating Manual PMCprotego D.48, PMCprotego D.72
1001735-EN-04
Glossary
Gray code
Display format of binary figures, in which adja-
cent figures differ in only one single bit
Holding brake
The holding brake holds moved masses or
loads at standstill, after the movement has
been braked.
Incremental encoder
Sensor for detecting linear or rotational posi-
tional changes; path, speed and direction can
be determined by evaluating the number of
pulses, pulse frequency and phase position.
Intermediate circuit
Circuit to smooth the still undulating, rectified
supply voltage to the servo amplifier; also used
as an energy store (with feedback for ex-
ample).
Intermediate circuit voltage
Voltage at a circuit on rectifier circuits
Inverted rectifier
Output stage of the power element of a servo
amplifier or frequency converter. A sinusoidal
output voltage is generated as an average
value through pulse width modulation (PWM)
of the DC voltage on the intermediate circuit.
Motion block
Data package containing all the position control
parameters required for a motion task
Motion control
Motion management for a large number of
physically separate drive axes within a plant or
application
Motion controller
Characterises the function of executing move-
ments by speed, angle synchronisation and po-
sition or also interdependently via closed con-
trol loops, in accordance with specified con-
cepts.
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