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Axiom Plus System Overview
The Axiom Plus unit uses a high speed Digital Signal Processor (DSP)
to perform all calculations necessary for high bandwidth, digital
control of three-phase brushless servo motors. All tuning
parameters are set and stored digitally using the Tol-O-Motion
Axiom Plus setup software. In addition, the unit includes a 1-1/2
axis controller function with user assignable I/O and an integrated
PLC.
With brushless motors, the Axiom Plus incorporates state-of-the-art
Space Vector Commutation to give 12.5% better bus voltage
utilization than traditional sinusoidal commutation drives. This
allows for improved motor speed/torque performance over older
technology trapezoidal or sinusoidal motor drives.
In addition, the Axiom Plus implements a Flux Vector, or field
oriented, current control algorithm. This allows for precise, high
bandwidth current control in each individual motor phase and
minimizes torque variations due to slight phase-to-phase
differences within a motor’s windings. It also minimizes non-torque
producing motor current for less motor heating and better speed/
torque performance than with traditional trapezoidal and sinusoidal
control algorithms.
POWER RATINGS
Three power levels of Axiom Plus are available.
•
Axiom Plus PV10 with a continuous current rating of 5A and a
peak rating of 10A from a single or three phase power source.
•
Axiom Plus PV20 with a continuous current rating of 10A and a
peak rating of 20A from a single or three phase power source.
•
Axiom Plus PV30 with a continuous current rating of 15A and a
peak rating of 30A from a single or three phase power source.
The Axiom Plus system, when combined with Tol-O-Matic MRV
series brushless servo motors, can provide continuous torque up to
75 lb-in (10.7 Nm), peak torque up to 150 lb-in (21.4 Nm) and speeds
up to 6000 RPM.
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