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Terminology
It will be necessary to be familiar with some terms used in this document.
b.p.s. bit per second; the unit of communication speed.
CCW Motor rotating direction, counterclockwise; seen from the outside of rotor.
closed logic output state; output current will flow.
CW Motor rotating direction, clockwise; seen from the outside of rotor.
Driver Unit means Megatorque Motor System’s driver unit when capitalized.
Home Return a built-in sequence program for setting the home position.
kpps kilo pulse per second; the unit of pulse frequency.
Motor means Megatorque Motor System’s motor when capitalized.
OFF (all capital) logic input state; input will see an open circuit.
ON (all capital) logic input state; there will be a current path to the common DC supply.
open logic output state; no output current
P control proportional-only control; the servo algorithm.
PI control proportional and integral control; the servo algorithm.
position gain shorter name for position loop proportional gain
position integrator frequency shorter name for position loop integrator cutoff frequency
position loop control mode a control mode within the position control loop; P control or PI control available.
Programmable Indexer Driver Unit’s built-in indexing ability.
pulse train a series of pulses used as a position command.
quadrature output two pulse train outputs with 90û phase difference.
rated stall torque the rated torque available at zero speed.
rated torque the torque not to exceed the maximum Motor winding temperature.
s
revolution per second; the unit of velocity.
s
s
-1
per second; the unit of acceleration.
servo-lock one typical state of servo-on; the Motor provides torque and remains in position.
servo-off the state where the Driver Unit provides no current to the Motor, and the Motor provides
no torque. The Motor rotor can be rotated easily.
servo-on the state that the Driver Unit is ready to control the Motor, or is controlling the Motor.
shipping set a parameter setting or a Driver Unit function setting at shipping.
stall torque the torque available at zero speed.
System means Megatorque Motor System when capitalized.
velocity gain shorter name for velocity loop proportional gain
velocity integrator frequency shorter name for velocity loop integrator cutoff frequency
velocity loop control mode a control mode within the velocity control loop; P control or PI control available.
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