DMS Series
Internal-rotation direct drive for high resolution, torque, and precision
Direct Drive Motors
DMN Series
DMN Low-Profile Direct Drive Motor
- Type
- Inner-rotating direct drive, low profile
- Frames
- 5 (65 - 212 mm square, plus Ø230)
- Continuous Torque
- 0.32 - 94 N·m
- Peak Torque (1 s)
- 0.96 - 282 N·m
The DMN is an inner-rotating direct drive in a low-profile package that installs easily, suited to high resolution, low torque applications. High positioning accuracy and high repeatability are achieved through its high-precision encoder, with a choice of incremental or absolute feedback system.
When the axis needs more torque than a low-profile DMN carries, the inner-rotating DMS runs to 150 N·m with the same feedback options. View DMS Series →
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±2.5 arc-sec
Repeatability, incremental-encoder models
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4,320,000
Encoder counts per revolution (INC, sin/cos 1 Vpp)
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20-bit
Absolute encoder on DMN71 and DMN93 (19-bit on smaller frames)
Applications
- Laser machining and 3C printing
- 3C electronics and curved-surface inspection
- Screen printing
- Semiconductor transport
- Display panel
- Medical and inspection equipment
Models
Model digits encode frame and torque size: DMN44 is a 118 mm frame at 2.8 N·m continuous. Every catalog model orders with an incremental or absolute encoder; DMN71 runs to 600 rpm with the incremental scale but 400 rpm with the absolute. DMN95 and DMN9A come from the newer brochure, ship with the 3600-line incremental encoder and take a 600 VDC nominal input.
| Model | Frame (mm) | Continuous torque (N·m) | Peak torque 1 s (N·m) | Max speed (rpm) | Configure |
|---|---|---|---|---|---|
| DMN21 | 65 × 65 | 0.32 | 0.96 | 1500 | Configure ↗ |
| DMN22 | 65 × 65 | 0.64 | 1.92 | 1500 | Configure ↗ |
| DMN42 | 118 × 118 | 1.4 | 4.2 | 700 | Configure ↗ |
| DMN44 | 118 × 118 | 2.8 | 8.4 | 700 | Configure ↗ |
| DMN71 | 160 × 160 | 3.7 | 11.1 | 600 INC / 400 ABS | Configure ↗ |
| DMN93 | 212 × 212 | 13.2 | 39.6 | 500 | Configure ↗ |
| DMN95 | Ø230 | 47 | 141 | 250 | Configure ↗ |
| DMN9A | Ø230 | 94 | 282 | 350 | Configure ↗ |
Part numbers & options
How a part number reads
DMN 7 1 - B 0 S N 0 0 - S 0 - 1 S S - 0 - 0 (spaces between decoded positions)
- DMN
- Series — low-profile inner-rotating direct drive
- 7
- Frame — 2 65 mm · 4 118 mm · 7 160 mm · 9 212 mm and up
- 1
- Torque size within the frame (1, 2, 3, 5, A ...)
- B
- Encoder — A 19-bit ABS · B 20-bit ABS · 2 1500 · 4 2500 · 5 3600 lines (INC)
- 0
- Hall sensor — 0 none · 1 digital
- S
- Winding code — S standard
- N
- Temperature sensor — N none · P PTC
- 0
- Protection — 0 IP40
- 0
- Function code
- S
- Axial/radial runout — S 30/30 µm · P 5/30 µm · A 5/15 µm
- 0
- Accuracy compensation — 0 none · 1 ±10 arc-sec · 2 ±5 arc-sec
- 1
- Wire length — 0 no cable (optical standard) · 1 0.3 m (ABS standard) · 2 0.5 m (DMN21 INC only)
- S
- Connector type — S ABS scale (AMP joint) · A optical scale (Intercontec M17 metallic joint)
- S
- Positioning pinhole — S standard (according to the drawing)
- 0
- Clamp — 0 without clamp (standard)
- 0
- Reserved code
The configurator assembles this number for you, with drawings and 3D CAD. Configure ↗
Feedback
Each model ships with an optical incremental scale or an absolute encoder; the absolute versions work with the E1 drive only.
- 2 1500-line incremental — DMN21 through DMN44; the sin/cos 1 Vpp scale resolves 4,320,000 counts per revolution
- 4 2500-line incremental — DMN71
- 5 3600-line incremental — DMN93, plus the brochure models DMN95 and DMN9A
- A 19-bit absolute — DMN21 through DMN44; no homing move on power-up
- B 20-bit absolute — DMN71 and DMN93; repeatability ±5 arc-sec on these frames
Windings
- S Standard — The only winding printed for the DMN; no high-speed L option
Accuracy compensation
Factory error mapping tightens angular accuracy.
- 0 Without compensation — Uncompensated accuracy runs ±15 to ±45 arc-sec depending on model and encoder
- 1 ±10 arc-sec — After factory error mapping
- 2 ±5 arc-sec — The tightest mapped grade
Runout & sensors
- P/A Precision runout — 5/30 µm or 5/15 µm axial/radial against the standard 30/30 µm; spec-table optional grades reach 5 µm axial, 15 µm radial
- 1 Digital Hall sensor — Commutation without a homing move
- P PTC sensor — SNM100 in-winding over-temperature sensor, standard on incremental models; absolute models rely on the E1 drive's overload detection instead
Other Direct Drive Motors
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DMY Series
External-rotation direct drive combining high resolution with high torque
Direct Drive Motors
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DMT Series
Ultra-low-profile tables with enlarged hollow shaft and high rigidity
Direct Drive Motors
How buying works
Spec it in the configurator: drawings, 3D CAD, and a quote to follow.
HIWIN series are configured to your application, not bought off the shelf. Start from your loads and speeds if you are still choosing a size.
Rather talk it through? Request a quote from an application engineer.