www.fastech-motions.com - 6
2. Main Characteristics
Ezi-SERVO automatically controls motor current according
to load. Ezi-SERVO reduces motor current when motor
load is low and increases motor current when load is
high. By optimizing the motor current, motor heat can
be minimized and energy can be saved.
3
Heat Reduction / Energy Saving
(Motor Current Control according to load)
1
Ezi-SERVO is an innovative Closed Loop System that
utilizes a high-resolution motor mounted encoder
constantly to monitor the current position. The encoder
feedback allows the Ezi-SERVO to update the current
position every 25 μs e c . It allows the Ezi-SERVO drive to
compensate for the loss of position, ensuring accurate
positioning. For example, due to a sudden load change,
a conventional stepper motor and drive could lose a
step but Ezi-SERVO automatically correct the position
by encoder feedback.
Closed Loop System
To ensure machine performance, smoothness, positional
error and low servo noise, conventional servo systems
require the adjustment of its servo’s gains as an initial
crucial step. Even systems that employ auto-tuning
require manual tuning after the system is installed,
especially if more that one axis are interdependent.
Ezi-SERVO employs the best characteristics of stepper,
closed loop motion controls and algorithms to eliminate
the need of tedious gain tuning required for conventional
closed loop servo systems. This means that Ezi-SERVO
is optimized for the application and ready to work right
out of the box. The Ezi-SERVO system employs the
unique characteristics of the closed loop stepping motor
control, eliminating these cumbersome steps and giving
the engineer a high performance servo system without
wasting setup time. Ezi-SERVO is especially well suited
for low stiffness loads (for example, a belt and pulley
system) that sometime require conventional
servo systems to inertia match
with the additional expensive
and bulky gearbox.
Ezi-SERVO also performs
exceptionally, even under
heavy loads and high
speeds.
2
No Gain Tuning
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