Kollmorgen BDS5, Инструкция по установке и настройке

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G
LOSSARY
BDS5
Glossary-iv
A term used to describe the linking of several
RS232C devices in sequence such that a single data
stream flows through one device and on to the next.
Daisy-chained devices usually are distinguished by
device addresses which serve to indicate the desired
destination for data in the stream.
Damping
An indication of the rate of decay of a signal to its
steady state value. Related to setting time.
Damping Ratio
Ratio of actual damping to critical damping. Less
than one is an underdamped system and greater than
one is an overdamped system.
DC Adjustable-Speed Drive
All equipment required to adjust the speed or torque
of DC motor(s) by controlling the voltages applied to
the armature and/or field of the motors.
DC Drive
An electronic control unit for running DC motors.
The DC drive converts AC line current to a variable
DC current to control a DC motor. The DC drive has
a signal input that controls the torque and speed of the
motor.
Dead Band
A range of input signals for which there is no system
response.
Decibel (dB)
A logarithmic measurement of gain. If G is a systems
gain (ratio of output to input) then 20 log G = gain in
decibels (dB).
Demag Current
The current level at which the motor magnets will be
demagnetized. This is an irreversible effect which
will alter the motor characteristics and degrade
performance.
Detent Torque
The maximum torque that can be applied to an un-
energized stepping motor without causing continuous
rotating motion.
Dielectric Test
A high voltage breakdown test of insulation's ability
to withstand an AC voltage. Test criterion limits the
leakage current to a specified magnitude and
frequency, applied between the specified test points.
Differential
An electrical input or output signal which uses two
lines of opposite polarity referenced to the local
signal ground.
Distributed Processing
A technique to gain increased performance and
modularity in control systems utilizing multiple
computers or processors.
DNC, Direct Numerical Control
Technique of transferring part program data to a
numerical control system via direct electrical
connection in place of paper tapes.
Drive
This is the electronics portion of the system that
controls power to the motor.
Drive, Analog
Usually referring to any type of motor drive in which
the input is an analog signal.
Drive, Digital
Usually referring to any type of motor drive in which
the tuning or compensation is done digitally. Input
may be an analog or digital signal.
Drive, Linear