A digital data communications standard popular in instrumentation
electronics. This parallel interface is also known as GPIB, or General
Purpose Interface Bus.
The combination of AC and DC resistance in a circuit, measured
Motion: A motion control term that describes a device that produces
one step of motion for each step command (usually a pulse) received.
A coordinate system where positions or distance are specified relative
to the current position.
A measure of an object's resistance to a change in velocity.
The larger an object's inertia, the larger the torque accelerate
or decelerate it. Inertia is a function of an object's mass and
Match: For most efficient operation, the system coupling ratio
should be selected so that the reflected inertia of the load is
equal to the rotor inertia of the motor.
Electronics which converts higj level motion commands from a
host computer, PLC or operator panel in to step and direction pulse
stream for use by the step motor driver. Indexec can be broadly
divided into two classes. A preset indexer typically accepts distance,
velocity and ramp time inputs only. the more sophisticated programmable
indexer is capable of complex motion control and includes program
The electrical equivalent to mechanical inertia, that is the
property of a circuit which has tendency to resist current flow
when no current is flowing and when current is flowing has tendency
to maintain that current flow. Poewrtec, measures inductance (line-to-line)
with a bridge at 1000Hz and with the rotor positioned so the back-EMF
waveform is at the peak of the sinusoid.
material that blocks the flow of current which is used for short
circuit and shock prevention.
Abbreviation of input/output. Refers to input signals from switches
or sensors and output signals to relays, solenoids etc.