MDrive34AC Plus Step / direction input
The MDrive34AC Plus step and direction input is a NEMA size 34 high torque 1.8° stepper motor integrated with a microstepping driver and a 120 or 240 VAC power supply.
Features include:
- 120 or 240 VAC input voltage
- SPI communication
- Up to 750 oz-in (529 N-cm) of output torque
- Advanced current control for unsurpassed smoothness and performance
- 20 microstep resolutions from full step to 51,200 steps per revolution
- Optically isolated logic can accept sinking or sourcing inputs ranging from +5 to +24 VDC
- All parameters are software configurable (setup utility included) - no external switches or resistors required
- Specifications
- Options / Accessories
- Connector options by P/N
- Downloads / Support
- General
- Comm
- Motion
- Setup Parameters
- Motor
- Mechanical
| AC Input Voltage (50/60 Hz) |
120 VAC MDrive | 95 to 132 VAC |
| 240 VAC MDrive | 95 to 264 VAC | |
| Isolated Inputs (Step Clock, Direction and Enable) |
Sinking or Sourcing voltage | +5 to +24 VDC |
| Current (+5 VDC Max) | 8.7 mA | |
| Current (+24 VDC Max) | 14.6 mA | |
| Operating Temperature | Measured at Heat Sink (non-condensing humidity) |
-40° to 75°C |
| Measured at Motor (non-condensing humidity) |
-40° to 90°C |
| Protocol | SPI (Serial Peripheral Interface) |
| Isolation | Galvanic |
| Digital Filter Range | 50 nS to 12.9 μS (10 MHz to 38.8 kHz) | |
| Clock Types | Step/Direction, Step Up/Step Down, Quadrature | |
| Step Frequency | 2 MHz (Default), 5 MHz (Max) | |
| Microstep Resolution | Number of Settings | 20 |
| Steps per Revolution | 200, 400, 800, 1000, 1600, 2000, 3200, 5000, 6400, 10000, 12800, 20000, 25000, 25600,
40000, 50000, 51200, 36000 (0.01 deg/μstep), 21600 (1 arc minute/μstep), 25400 (0.001mm/μstep) |
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| Function | Range | Units | Default | |
| MHC | Motor Hold Current | 0 to 100 | Percent (%) | 5 |
| MRC | Motor Run Current | 1 to 100 | Percent (%) | 25 |
| MSEL | Microstep Resolution | See Specifications Motion tab | µsteps/step | 256 |
| DIR | Motor Direction Override | CW/CCW | — | CW |
| HCDT | Hold Current Delay Time | 0 or 2 to 65535 | msec | 500 |
| CLK TYPE | Input Clock Type | Step/Dir, Up/Down, Quadrature | — | Step/Dir |
| CLK IOF | Clock and Direction Filter | 50 nS to 12.9 μS (10 MHz to 38.8 kHz) |
ns (MHz) | 200 (2.5) |
| USER ID | User ID | 1 to 3 characters | Viewable ASCII | IMS |
| EN ACT | Enable Active | High/Low | — | High |
| WARN_TEMP | Over Temperature Warning | 0 to 125 | °C | 80 |
| Stack length | Single length | Double length | Triple length | |
| Holding torque | oz-in | 330.0 | 500.0 | 750.0 |
| N-cm | 233.0 | 353.0 | 529.0 | |
| Detent torque | oz-in | 10.9 | 14.16 | 19.83 |
| N-cm | 7.7 | 10.0 | 14.0 | |
| Rotor inertia | oz-in-sec2 | 0.01416 | 0.02266 | 0.04815 |
| kg-cm2 | 1.0 | 1.6 | 3.4 | |
| Weight | oz | 6.4 | 7.7 | 11.0 |
| grams | 2.9 | 3.5 | 5.0 | |
| Torque/Speed Curve |
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| MDrive34ac Plus Step / direction input |
| Dimensions in inches (mm) |
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- QuickStart Kit
- Encoders
- Connectivity solutions
Internal encoder
The internal encoder option is a differential optical encoder. The internal optical encoder offers several advantages:
- Available line counts: 100, 200, 250, 256, 400, 500, 512, 1000, 1024.
- Encoder in a closed environment, limited susceptibilty to dust contamination.
- Robust output sink current of 20 mA.
External encoder
An external encoder is not available for this product.
NOTE: To view specific connectivity options for a particular MDrive model, see Connector options by P/N tab above.
Communications Converters
Electrically Isolated, in-line converters pre-wired with mating connectors to conveniently set parameters and program a single MDrivePlus via a PC USB port.
| Converter Part Number | Mating Connector Type |
| MD-CC301-001 (USB to SPI) | 19-Pin M23 Male |
If building your own cabling, you will need:
- SPI inline converter or PC parallel port
- Cabling with appropriate mating connectors for the MDrive model selected
Prototype Development Cables
Prototype development cables are designed to speed test/development with pre-wired mating connectors that have flying leads other end. No prototype development cables are available for the MDrivePlus using the 12' Flying Leads or Pluggable Clamp Terminal Strip.
| Prototype Development Cable P/N | Mating Connector Type | Signal Type |
| MD-CS100-000 | 19-Pin Circular (Straight) | I/O and Communications |
| MD-CS101-000 | 19-Pin Circular (Right-Angle) | I/O and Communications |
| MD-CS-200-000 | 3-Pin Euro-AC (Straight) | Power |
| MD-CS-201-000 | 3-Pin Euro-AC (Right-Angle) | Power |
These Prototype Development Cables will ONLY be used if you are using your own SPI communications converter.
If building your own cabling, you will need:
- Appropriate mating connector and crimp pins if required. (Mating connector kits are available for Locking Wire Crimp style connectors.)
- Crimp tooling (Locking Wire Crimp)
- Shielded twisted pair cabling
Mating Connector Kits
There are no mating connector kits available for this product.
View mating connector interface options by MDrive part number (P/N). Launch connecting options with link below. |
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Literature |
Downloads |
Additional Resources |





