www.fastech-motions.com - 6
2. Main Characteristics
1
Integrated Solution
Ezi-SERVOⅡ BT with integrated Motor and Encoder
and Drive has provides the optimum solution that
can take full advantage of Ezi-SERVOⅡ by realizing
compact size and simple wiring.
2
Closed Loop System
Ezi-SERVOⅡ 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-SERVOⅡ to update the current
position every 50 μsec. It allows the Ezi-SERVOⅡ
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-SERVOⅡ automatically correct the
position by encoder feedback.
3
No Gain Tuning
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-
SERVOⅡ 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-SERVOⅡ
is optimized for the application and ready to work right
out of the box. The Ezi-SERVOⅡ 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-SERVOⅡ 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-SERVOⅡ also performs
exceptionally, even under
heavy loads and high
speeds.
4
Heat Reduction / Energy Saving
Ezi-SERVOⅡ automatically controls motor current
according to load.
Ezi-SERVOⅡ 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.
(Motor Current Control according to load)
