Integrated Stepper Motors
Liberty MDrive®
Liberty MDrive® LMD17 NEMA 17 Motion Control External Linear Actuator IP20
Compact programmable integrated motor with RS-422/485 communications interface. Feedback options include open loop, or closed loop with an incremental or multi-turn absolute encoder with hMTechnology.
- Motor size: NEMA 17 (42 mm)
- Input voltage: +12 to +48 VDC
General Specifications
| Specification | Value |
|---|---|
| Control Type | Programmable Motion |
| Communications Interface | RS-422/485 |
| Communications Features | MCode OS |
| NEMA Size | 17 (42 mm) |
| Torque Range | 44 … 88 oz-in (31 … 62 N-cm) |
| Heatsink Operating Temperature | 85°C |
| Motor Operating Temperature | 100°C |
| IP Rating | IP20 |
Electrical Specifications
| Specification | Value |
|---|---|
| Input Voltage | +12 … +48 VDC |
| Power Supply Current Requirement | 2 A |
| Aux-Logic Supply Voltage | 12 … 24 VDC |
| Aux-Logic Supply Current | 194 mA max |
I/O Specifications
| Specification | Value |
|---|---|
| Signal Inputs: +5 to +24 VDC | |
| Voltage Range | 5 … 24 VDC |
| Input Current @ +5 VDC | 8.7 mA |
| Input Current @ +24 VDC | 14.6 mA |
| Input Frequency | 5 kHz |
| Isolation | Galvanic |
| Protection Class | III |
| Analog Input | |
| Voltage Mode | 0 … 10 VDC |
| Current Loop Mode | 0 … 20 mA |
| Resolution | 12 bits |
| Isolation | None |
| Signal Outputs: 1 – 5.5 mA | |
| Voltage Open-Collector | 60 VDC |
| Voltage Open-Emitter | 7 VDC |
| Current Open-Collector | 5.5 mA |
| Current Open-Emitter | 5.5 mA |
| Isolation | Galvanic |
Motion Specifications
| Specification | Value |
|---|---|
| Open Loop (No encoder or hMT/Encoder Functions Off) | |
| Microstep Resolution (# of Settings) | 20 |
| Microstep Range | 200 … 51200 steps/rev |
| Counter Type | 32-bit Position |
| Counter Edge Rate | 5 MHz (max.) |
| Velocity Range | ±2560000 steps/sec, ±3000 RPM |
| Velocity Resolution | 0.5961 steps/sec |
| Accel/Decel Range | 1.5 X 10⁹ steps/sec² |
| Accel/Decel Resolution | 90.9 steps/sec² |
| Closed Loop (hMT/Encoder Functions On) | |
| Incremental Encoder Type | Internal, magnetic |
| Incremental Encoder Resolution | 1000 lines / 4000 edges |
| Multi-turn Absolute Encoder Type | Internal, magnetic |
| Multi-turn Absolute Encoder Data Retention (Internal Power) | 30 days |
| Multi-turn Absolute Encoder Data Retention (Battery Pack) | 5 years |
| Common Scaling (Encoder Counts : Full Step) | 20:1 |
| Common Counter Type | 32-bit Encoder |
| Common Encoder Functions (hMTechnology OFF) | Position maintenance, Find index, Stall detect |
| Common Encoder Functions (hMTechnology ON) | Anti-stall, Variable current control, Torque mode |
Software Specifications
| Specification | Value |
|---|---|
| MCode OS | |
| Program Storage Type | Flash |
| Program Storage | 11120 Bytes |
| Multidrop Addresses | 62 |
| User Registers (Integer) | 4 |
| User Registers (Floating Point) | 8 |
| User Registers (Length) | 32 Bits |
| Math | +, -, x, ÷, >, <, =, <=, >= |
| Logic | AND, OR, XOR, NOT |
| Trigonometric | ABS, COS, ACOS, LOG, LOG10, PI, SIN, ASIN, SQRRT, TAN, ATAN |
| Branch Functions | Branch & call |
| Input Functions | Home, limit plus, limit minus, go, stop, pause, jog plus, jog minus, general purpose, capture |
| Output Functions | Moving, error, velocity change, stall, locked rotor, moving position, hMT active, make-up active, encoder A, encoder B, trip, attention. general purpose, |
| Trip Functions | Trip on input, trip on position, trip on time, trip capture, trip on relative position, trip on main power loss |
| Encoder Functions | hMTechnology, stall detection, position maintenance, find index |
Motor Performance
Screw A
Screw B
Screw C
Screw Key
| Screw A | 0.250 in (6.350 mm) per revolution |
| Screw B | 0.125 in (3.175 mm) per revolution |
| Screw C | 0.063 in (1.588 mm) per revolution |
Do not exceed the nut’s rated thrust: 25 lbs (11 kg) for general‑purpose nuts and 5 lbs (2 kg) for anti‑backlash nuts.
Motor Specifications
| Attribute | Value |
|---|---|
| Maximum Screw Misalignment | ±1° |
| General Purpose Nut | |
| Maximum Thrust | 25 lbs (11 kg) |
| Maximum Repeatability | 0.005 in (0.127 mm) |
| Anti-Backlash Nut | |
| Maximum Thrust | 5 lbs (2 kg) |
| Maximum Repeatability | 0.0005 in (0.0127 mm) |
| Motor | |
| Rotor Inertia | 0.0005 oz-in-sec² (0.034 kg-cm²) |
| Weight (Motor+Driver) | 13.6 oz (386 g) |
Leadscrew Characteristics
Dimensional Information
| A | 3.0–18.0 in / 77.5–455.0 mm; 0.1 in / 0.25 mm increments |
| B | 0.25 in (6.35 mm) |
| C | 0.25 in (6.35 mm) |
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)
End Treatment Options
| None | — |
| Smooth | Ø 0.1967 in ± 0.001 (Ø 5 mm ± 0.003) |
| Threaded (Metric) | M4 x 0.7 thread to within 0.76 mm (0.03 in) of shoulder |
| Threaded (UNC) | #8‑32 UNC‑2A thread to within 0.03 in (0.76 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 Dimensions
- Filter by Type
- Software Interface
| Download | Download Type | Language |
|---|---|---|
| LMD Software Suite 1.1.0.0 | Software Interface | English |
- Filter by Part Number
- ICP0531
- CK-15
- MD-CC404-000
| Part Number | Description | ||
|---|---|---|---|
 |
ICP0531 |
The ICP0531 Encoder Back-up Battery Pack will provide back-up power for the Liberty* MDrive Absolute Encoder circuitry, retaining and updating the position data for a period of up to five (5) years. The battery pack requires three (3) Energizer L91 1.5V AA Lithium batteries. |
|
 |
CK-15 |
Kit includes one 2-pin power mate, and one set (2 pieces) 7-pin multi-function mates for Liberty* MDrive Motion Control, Ethernet TCP/IP and CANopen models. |
|
 |
MD-CC404-000 |
USB-pluggable converters set/program communication parameters in 32- or 64-bit. Pre-wired DB9 mating cable included. |
|
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