RD-323MS
RD-323MS
RD-323MS
RD-323MS
RD-323MS
RD-323MS
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RD-323MS

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RORZE RD-323MS is a 2-phase unipolar microstepping motor driver with a built-in pulse oscillator and analog speed control.
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Technical specifications for RD-323MS

  • Manufacturer:
    RORZE
  • Part Number:
    RD-323MS
  • Product Family:
    RORZE
  • Product Type:
    2-Phase Microstepping Motor Driver
  • Stock:
    1
  • Supply Voltage:
    18 to 40 VDC including ripple
  • Motor Current:
    0.3 to 3 A per phase
  • Drive Method:
    Unipolar constant-current chopper
  • Microstep Resolution:
    Up to 1/80
  • Clock Output Selection:
    1 to 80 pulses per step
  • Oscillator Frequency:
    700 kpps maximum
  • Speed Command:
    Analog voltage at SPEED terminal
  • Acceleration/Deceleration:
    20 ms to 3 s
  • Automatic Current Down:
    0 to 80% after about 0.3 s stopped
  • Weight:
    0.551 lbs (0.25 kg)
  • Estimated shipping dimensions:
    10.5 x 2.6 x 5.6 cm (W x H x D)
  • Tariff Code:
    8537101190
  • Country of origin:
    Vietnam
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Motor Matching Motion Profile Fault Protection Installation

Features:

  • A built-in oscillator generates motion commands for two-phase stepping motors.
  • Analog voltage at the SPEED terminal varies the commanded stepping rate.
  • Current-down and fault-detection circuits support controlled driver operation.
RD-323MS uses a unipolar constant-current chopper stage to regulate winding current throughout each microstep.

Its selectable division table provides up to eighty command pulses for one basic motor step.

Low-speed, high-speed, and acceleration controls shape the motion profile directly at the driver.

The RORZE RD-323MS 2-Phase Microstepping Motor Driver may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
RORZE RD-323MS 2-Phase Microstepping Motor Driver Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Winding and Current Requirements

  • Motor construction: Compatible loads are two-phase HB or PM stepping motors.
  • Lead arrangement: The unipolar output is intended for four- or six-lead winding connections.
  • Phase setting: Driver current is adjustable from 0.3 to 3 A for each motor phase.
  • Voltage boundary: Motor rated voltage must remain within the documented relationship to the DC supply.

Oscillator and Ramp Control

  • Clock source: The internal oscillator reaches a maximum stepping frequency of 700 kpps.
  • Division range: Selectable clock output spans one to eighty pulses for each basic step.
  • Speed input: Voltage at the SPEED terminal continuously adjusts the oscillation rate.
  • Ramp timing: Acceleration and deceleration are adjustable from 20 milliseconds to 3 seconds.

Driver Safeguards

  • Thermal detection: An internal circuit reacts when the driver exceeds its allowable temperature.
  • Current monitoring: Overcurrent protection limits damage from an abnormal output condition.
  • Supply supervision: Low-voltage detection identifies an inadequate 18-to-40 VDC input.
  • Stopped-motor reduction: Automatic current down lowers phase current after roughly 0.3 seconds of inactivity.

Mounting and Cooling

  • Supply connection: The DC input must remain between 18 and 40 V including ripple.
  • Case cooling: The enclosure should conduct heat to a suitable metal mounting surface.
  • Temperature check: Operating airflow must keep the case at or below the stated 60°C limit.
  • Forced ventilation: A fan is added when natural heat dissipation cannot maintain the required case temperature.
Description
RORZE RD-323MS is a two-phase microstepping motor driver that combines a unipolar constant-current chopper stage with an internal pulse oscillator, allowing motor motion without an external pulse generator.

Motor current on RORZE RD-323MS is adjustable from 0.3 to 3 A per phase for compatible four- or six-lead HB and PM stepping motors. The selectable clock output provides one to eighty pulses per basic step, with microstep resolution reaching 1/80.

Speed control for RORZE RD-323MS can follow the analog voltage applied to the SPEED terminal, while separate low- and high-speed adjustments define the operating range. Acceleration and deceleration can be set from 20 milliseconds to 3 seconds.

RORZE RD-323MS reduces stopped-motor current after approximately 0.3 seconds according to the stop-current setting. Internal detection covers overheating, overcurrent, and low supply voltage, and the case temperature must remain within the stated cooling limit.
Alternative Names
RD-323MS Microstep Driver RORZE RD323MS RD 323MS RD-323M5 RORZE RD-323MS RD323MS RD-323 MS RD-323MS Motor Driver
Technical notes
RORZE RD-323MS combines a 700 kpps oscillator, analog speed command, and selectable 1-to-80 pulse-per-step clock output in one driver.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What makes RD-323MS different from a pulse-input-only driver?
RD-323MS includes its own pulse oscillator and analog SPEED input, so it can generate the commanded stepping rate without a separate pulse source.
Which motors are electrically suitable for RD-323MS?
RD-323MS is intended for compatible two-phase HB or PM stepping motors with four or six leads and a rated phase current from 0.3 to 3 A.
How finely can RD-323MS divide a motor step?
RD-323MS provides selectable clock output from one to eighty pulses per basic step, allowing microstep resolution up to 1/80.
Where is speed commanded on RD-323MS?
RD-323MS varies speed from the analog voltage at its SPEED terminal, with low- and high-speed controls establishing the adjustment span.
What happens to RD-323MS current while the motor is stopped?
After about 0.3 seconds without motion, RD-323MS applies automatic current down from 0 to 80% of run current according to the Stop Current setting.
Which faults are detected inside RD-323MS?
RD-323MS includes protective detection for overheating, overcurrent, and low supply voltage.
How should cooling be planned for RD-323MS?
RD-323MS must be mounted so its case stays at or below the documented temperature limit, using a metal mounting surface or forced air when required.