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Bipolar microstep driver 1 to 7A (24 a 80V)
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ProDrive 2000 Microstep drive is a PWM
Chopper, providing Bipolar drive for 2-Phase stepping motors. It accepts a
wide input voltage range (+24 to 80Vdc), while delivering 1 to 7-Amps per
phase. The Dual H-Bridge topology incorporates Anti-Resonance and Phase
Trimming, providing exceptional performance at up to 200,000 Microsteps per
second. Automatic current cutback, low power dissipation and small package
size eases the OEM's design-in.
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FEATURES
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Wide Operating Voltage |
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Programmable Phase Current |
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High Stepping Rate |
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Smooth Performance / 10-Microsteps |
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Anti-Resonance / Mid-Band Stabilization |
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Automatic STANDBY
Current Reduction |
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Optically-Isolated Step and
Direction |
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Disable Command Tri-States
Phase Outputs |
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High-Efficiency MOSFET / Low Dissipation |
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Open-Frame / Extruded Aluminum
Chassis |
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Removable Terminal Blocks /
5mm Pitch |
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QS9000 Compliant Manufacturing |
APPLICATIONS
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Industrial Automation |
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Computer Numeric Control |
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Robotics |
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Medical Products |
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Labeling / Conveying Equipment |
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Packaging Systems |
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DESCRIPTION
The ProDrive-2000
Microstepper is quite universal and well suited for driving NEMA 17 to
42 frame, 2-phase stepper motors. It provides sinusoidal phase currents
optimized for 10-microsteps per full motor step and transitions to
quadrature phase currents as motor speed increases beyond the point where
microstepping is no longer beneficial. Bipolar phase current regulation is
achieved through PWM chopping at 20kHz., promoting inaudible
switching. Phase currents are programmed using an external resistance, which
may be fixed or dynamic, with provision for trimming. Automatic phase
current reduction to 1/3 rd
the programmed value is enabled by default and
occurs after one-second of stepping inactivity. Additional power
conservation can be realized through use of the non-isolated disable
command, which inhibits MOSFET gate drive, causing phase outputs to assume a
high-impedance state. The anti-resonance circuit provides damping of motor
oscillations by leading or lagging the torque wave, resulting in maximum
usable motor torque. |
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TYPICAL CONFIGURATION
Components that are necessary for a typical configuration
are shown in Figure-1. While these
are the "minimum" required to operate the ProDrive-2000, other
configurations can result in added flexibility. Including, a user defined
Standby current and programming of
phase currents "on-the-fly". Emergency stop is easily implemented through a
single switched contact or an optically-isolated solid-state-relay.
Operating power for the ProDrive-2000 is sourced entirely from
VDD, which should be situated in close
proximity to the ProDrive- 2000, otherwise an external capacitance is
required. High-side fusing is recommended if
VDD lacks internal over-current and short
circuit protection. Optically-isolated "Step" and "Direction" commands
use VCC as the source for
common-anode LED’s. A pulse generator, indexer or controller provides VCC
and must include a means for sinking return currents, as depicted in
Figure-1. A VCC higher than
5volts can be used with the proper series-limiting resistors. |
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 Datasheet
ProDrive-2000 |
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