Home > All Products > MDrive Intelligent Motors > Liberty MDrive Linear Motion Products > LMD23 NEMA 23 Pulse/direction External Linear Actuator IP20
Liberty MDrive®
LMD23 NEMA 23 Pulse/direction External Linear Actuator IP20
Compact integrated motor with RS-422/485 communications interface. Feedback options include open or closed loop with hMTechnology. [/wpv-conditional]
- Motor size: NEMA 23 (57 mm)
- Holding Torque range:
- Input voltage: +12 to +60 VDC
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Specifications
General Specifications
| General | ||
|---|---|---|
| Control type | — | Pulse/direction input |
| Communications interface | — | RS-422/485 |
| Communications features | — | MCode OS |
| NEMA size | — | 23 (57 mm) |
| Torque range | oz-in (N-cm) | |
| Operating temperature | [°C] heatsink | 85 |
| [°C] motor | 100 | |
| IP rating | — | IP20 |
California Residents – Click here for Proposition 65 warningElectrical Specifications
| Electrical | ||
|---|---|---|
| Input Voltage | [+VDC] | +12 to +60 |
| Power Supply Current Requirement | [A] | 3.5 |
I/O Specifications
| Logic and I/O | |||
|---|---|---|---|
| Pulse, direction and enable +5 to +24 VDC | |||
| Voltage Range | [+VDC] | 5 … 24 | |
| Input Current | [mA @ +5 VDC] | 8.7 | |
| Input Current | [mA @ +24 VDC] | 14.6 | |
| Input Frequency | |||
| Pulse (step) | [MHz] | 2.56 | |
| Quadrature | [MHz] | 1.25 | |
| Enable | [kHz] | 5 | |
| Isoation | — | Galvanic | |
| Protection class | — | III | |
| Analog Input | |||
| Voltage Mode | [0 … 5 VDC} | 0 … 5 | |
| Voltage Mode | [0 … 10 VDC} | 0 … 10 | |
| Current Loop Mode | [mA] | 0 … 20 | |
| Resolution | [Bits] | 12 | |
| Isolation | — | None | |
| Signal (Attention) Output: 1 – 5.5 mA | |||
| Voltage open-collector | [+VDC] | 60 | |
| Voltage open-emitter | [+VDC] | 7 | |
| Current open-collector | [mA] | 5.5 | |
| Current open-emitter | [mA] | 5.5 | |
| Isolation | — | Galvanic | |
Motion Specifications
| Motion | |||
|---|---|---|---|
| Open Loop (No encoder or hMT/Encoder functions off) | |||
| Microstep resolution | # of settings | 20 | |
| Range [steps/rev] | 200 … 51200 | ||
| Counter type | [32-bit] | Position | |
| Counter edge rate | [MHz] (max.) | 5 | |
| Velocity range | [steps/sec | RPM] | ± 2560000 | ± 3000 | |
| Velocity resolution | [steps/sec] | 0.5961 | |
| Accel/Decel range | [steps/sec2] | 1.5 X 109 | |
| Accel/Decel resolution | [steps/sec2] | 90.9 | Closed Loop (hMT/Encoder functions on) |
| Encoder type | Internal, magnetic | ||
| Encoder resolution | [Lines / Edges] | 1000 / 4000 | |
| Scaling | [Encoder counts : Full step] | 20:1 | |
| Counter type | [32-bit] | Encoder | |
| Encoder functions | [hMTecnology OFF] | Position maintenance | |
| Find index | |||
| Stall detect | |||
| [hMTechnolgy ON] | Anti-stall | ||
| Variable current control | |||
| Torque mode | |||
[/wpv-conditional]
Software Specifications
| Software | ||
|---|---|---|
| Parameters | ||
| Basic Parameters | ||
| Microstep resolution | [steps/rev] | 200 … 51200 |
| Run current | [%] | 1 … 100 |
| Holding current | [%] | 0 … 100 |
| Hold current delay | [mSec] | 0 … 65535 |
| Clock modes | — | Step/dir, Quadrature, CW/CCW |
| Motion input filter | [kHz … MHz] | 38.8 … 10 |
| Enable input | — | Active state/filter |
| Advanced Operating Modes | Pulse/direction | |
| Speed Control | ||
| Commanded Velocity | ||
| Torque Control1 | ||
| Advanced Parameters | Common | RS-422/485 |
| Mode specific | I/O | |
| Motion | ||
| Analog input | ||
| Velocity | ||
| hMTechonolgy1 | ||
| hMT modes | hMT OFF | |
| Fixed current | ||
| Variable current | ||
| Torque | ||
| Operation | Make-up position | |
| Torque % | ||
Motor & Mechanical
Motor Performance
Screw key
| Screw G | 0.3750′ (9.525 mm) per revolution |
| Screw A | 0.20′ (5.08 mm) per revolution |
| Screw B | 0.167′ (4.233 mm) per revolution |
| Screw D | 0.0833′ (2.116 mm) per revolution |
NOTE: Do not exceed the rated thrust limit of the nut being used:
- General purpose nut: 60 lbs (27 kg)
- Anti-backlash nut: 25 lbs (11 kg)
| Spec | Notes | Value | Maximum screw misalignment | ° | ±1 |
|---|---|---|
| General purpose nut | ||
| Maximum thrust | lbs | 60 |
| kg | 27 | |
| Maximum repeatability | in | 0.005 |
| (mm) | (0.127) | |
| Anti-backlash nut | ||
| Maximum thrust | lbs | 25 |
| kg | 11 | |
| Maximum repeatability | in | 0.0005 |
| mm | 0.0127 | |
| Motor | ||
| Rotor inertia | oz-in-sec2 | 0.0025 |
| kg-cm2 | 0.18 | |
| Weight (without screw) | oz | 24.8 |
| g | 703 | |
Leadscrew Characteristics
Screw travel specifications
| Travel per revolution | ||
|---|---|---|
| Screw | inches | mm |
| Screw G | 0.375 | 9.525 |
| Screw A | 0.20 | 5.08 |
| Screw B | 0.167 | 4.233 |
| Screw D | 0.0833 | 2.116 |
| Travel per full step | ||
| Screw | inches | mm |
| Screw G | 0.001875 | 0.0476 |
| Screw A | 0.001 | 0.0254 |
| Screw B | 0.000835 | 0.0212 |
| Screw D | 0.0004165 | 0.0106 |
Dimensional information
| Dimensional information | |
|---|---|
| in / mm | |
| A | 3.0 to 24.0 / 77.5 to 610.0 in 0.1 / 0.25 increments |
| B | 0.50 / 12.7 |
| C | 0.375 / 9.525 |
Nut specifications
General purpose nut
For applications not requiring backlash and wear compensation. Round flange shape.
Max Thrust: 25 lbs (11 kg)
Anti-backlash nut
For applications requiring backlash-free operation for high accuracy and low drag torque. Triangle flange shape.
Factory-preloaded: The anti-backlash nut ships pre-loaded from the factory. Should you need to remove it please read the assembly instructions.
Max Thrust: 5 lbs (2 kg)
General purpose nut
For applications not requiring backlash and wear compensation. Round flange shape.
Max Thrust: 60 lbs (25 kg)
Anti-backlash nut
For applications requiring backlash-free operation for high accuracy and low drag torque. Triangle flange shape.
Factory-preloaded: The anti-backlash nut ships pre-loaded from the factory. Should you need to remove it please read the assembly instructions.
Max Thrust: 25 lbs (11 kg)
End treatment options
| End treatments | ||
|---|---|---|
| None | — | |
| Smooth | Ø 0.2362″ ±0.001 Ø 6mm ±0.003 | |
| Threaded | Metric: M6 x 1.0mm thread to within 0.03″/ 0.76 mm of shoulder | UNC: 1/4-20 UNC-2A thread to within 0.05″/ 1.3 mm of shoulder |
Need a custom leadscrew solution?
SEM offers numerous customization options for your lead screw. Contact us to learn more!
Leadscrew maintenance statement
While under optimal conditions lubrication interval is expected to occur approximately once every 1000 hours of service. Actual life will depend on application and environment. Based upon this, frequent inspections must be performed and a maintenance interval determined based on actual conditions.
Recommended lubricant: Dupont Krytox GPL 206
Mechanical/Dimensional Information
Documents & Downloads
3D Models
Click the 3D Configurator link below for corresponding product models.
