1599-turn absolute feedback
The battery-free mechanical encoder retains position across power cycles and supports a 1599-turn operating range.
SPIM86 86 mm Multi-Turn Absolute Stepper Motor
Multi-Turn Absolute Stepper Motor
Integrated 86 mm battery-free multi-turn absolute stepper motor with 1599-turn feedback, 18–70 VAC or 24–100 VDC operation, and Modbus/RS485 or CANopen communication.
Positioning accuracy
High torsional rigidity and constant torsional backlash over the entire gearbox service life ensure consistently high performance
Compactness
High torque density thanks to high performance and short design
Low maintenance
Highest quality standards for a long service life and extended maintenance intervals
Technical data
Position retained across power cycles
Battery-free multi-turn feedback in an 86 mm integrated motor
The SPIM86 86 mm multi-turn absolute stepper motor combines the motor, drive electronics and mechanical multi-turn encoder in one position-retentive motion unit.
Integrated 86 mm motion control
Motor, driver, encoder and programmable control share one housing with origin setting, software limits and torque-mode functions.
Flexible machine interfaces
Modbus/RS485, CANopen, programmable digital I/O and open-collector outputs support distributed automation systems.
Engineering information
Technical data
The 86 mm platform covers a 4.5–12.5 N·m holding-torque range with integrated absolute feedback and machine-control interfaces.
86 mmFrame size
1599 turnsMulti-turn range
18–70 VACAC supply range
4.5–12.5 N·mHolding torque
Representative configurations
Motor variant specifications
| Variant | Body length | L | Shaft length | Shaft diameter | Phase current | Phase resistance | Phase inductance | Holding torque | Rotor inertia | Weight |
|---|---|---|---|---|---|---|---|---|---|---|
| SPIM86ET45 | 102.6 mm | 78.1 mm | 32 mm | 14 mm | 6 A | 0.37 Ω | 2.8 mH | 4.5 N·m | 1800 g·cm² | 2200 g |
| SPIM86ET65 | 122.1 mm | 97.6 mm | 32 mm | 14 mm | 6 A | 0.45 Ω | 4 mH | 6.5 N·m | 2800 g·cm² | 3000 g |
| SPIM86ET85 | 142.1 mm | 117.6 mm | 32 mm | 14 mm | 6 A | 0.59 Ω | 5.5 mH | 8.5 N·m | 3600 g·cm² | 3700 g |
| SPIM86ET125 | 180.6 mm | 156.1 mm | 32 mm | 14 mm | 6 A | 0.79 Ω | 8.2 mH | 12.5 N·m | 5400 g·cm² | 5500 g |
Representative configurations are shown; derived versions can be customized to suit the application.
Motor platform
Core specifications
| Parameter | Value |
|---|---|
| Frame size | 86 mm |
| Holding torque | 4.5–12.5 N·m |
| Supply voltage | 18–70 VAC or 24–100 VDC |
| Multi-turn feedback | 1599 turns |
| Encoder resolution | 4096 lines / 16384 counts |
| Communication | Modbus/RS485, CANopen, built-in programming |
Feedback and control
Integrated control functions
| Parameter | Value |
|---|---|
| Digital inputs | 5–24 VDC compatible |
| Digital outputs | Open collector, 30 VDC withstand |
| Input filter frequency | 50 kHz–5 MHz; factory default 300 kHz |
| Stored settings | Non-volatile configuration in MCU Flash |
| Control functions | Collision homing, constant torque, gripping, software limits and user-defined origin |
| Protection | Overvoltage, undervoltage, overcurrent, winding open circuit and position deviation |
Environment
Operating conditions
| Parameter | Value |
|---|---|
| Maximum speed | 3000 rpm |
| Operating temperature | 0–50°C |
| Maximum humidity | 90% RH, non-condensing |
| Vibration | 60–300 Hz/mm |
| Storage temperature | −20–75°C |
| Cooling | Natural or forced cooling |
| Installation environment | Avoid heat-generating equipment, dust, oil contamination, corrosive or flammable gases, excessive humidity, strong vibration and conductive dust. |
Status indication
LED operating and fault codes
| LED sequence | Status |
|---|---|
| Green steady | Motor running |
| Green flashing | Motor stopped |
| 1 red + 1 green | Driver overcurrent |
| 2 red + 1 green | Motor winding open circuit |
| 3 red + 1 green | Driver input overvoltage |
| 4 red + 1 green | Driver input undervoltage |
| 5 red + 1 green | Position deviation exceeded |
| 6 red + 1 green | Encoder detection error |
Electrical connection
Power, I/O and RS485 pinout
| Pin | Wire | Signal | Function |
|---|---|---|---|
| 1 | Red | V+ | Power input, 18–70 VAC or 24–100 VDC |
| 2 | Black | V− | Power ground; AC input is non-polarized |
| 3 | Yellow | Xcom | Input common; compatible with NPN and PNP wiring |
| 4 | Yellow/black | X0 | Programmable input; pulse input in pulse mode |
| 5 | Blue | X1 | Programmable input; direction input in pulse mode |
| 6 | Blue/black | X2 | Programmable input |
| 7 | Green | Y2 | Configurable output; may be factory-defined as X3 input |
| 8 | Green/black | Y1 | Default in-position output, normally closed; configurable |
| 9 | Purple | Y0 | Default alarm output, normally closed; configurable |
| 10 | Purple/black | Ycom | Output common; 0 V selects low-level output and 24 V selects high-level output |
| 11 | Orange | 485A | Modbus slave communication; factory default 115200 baud |
| 12 | Orange/black | 485B | Modbus slave communication; baud rate must match the master |
Power leads use red and black AWG20 wire. Signal leads use a 10-core shielded twisted-pair cable with AWG28 conductors. The factory-default lead length is 1000 mm.
Mechanical and electrical integration
High-torque absolute positioning with direct machine interfaces
The integrated architecture reduces separate components while providing retained position, communication and digital I/O for demanding automation axes.
- 85.85 mm maximum frame with a 69.6 ±0.20 mm mounting pattern
- 18–70 VAC or 24–100 VDC platform supply and 5–24 VDC compatible digital inputs
- RS485, CANopen, programmable I/O and open-collector outputs
Application fields
For higher-torque equipment that must retain position
Battery-free absolute feedback is useful where axes must recover their known position after power interruption without relying on a backup supply.
Industrial machinery
High-torque position-retentive motion axes in automated equipment.
Material handling
Position-controlled feeding, indexing and transfer mechanisms.
Test equipment
Positioning fixtures, inspection axes and laboratory instruments.
Special-purpose machines
Configurable integrated motion for demanding machine modules.
System integration
Interfaces for machine design
Select the motor configuration and communication option to suit torque, installation and control requirements.
Platform supply range18–70 VAC or 24–100 VDC
Holding torque range4.5–12.5 N·m
CommunicationModbus/RS485, CANopen
Digital inputs5–24 VDC compatible
Encoder feedback4096 lines / 16384 counts
Discuss your high-torque absolute-positioning axis with our engineers.
Share your torque, speed, voltage, communication and installation requirements for product selection and integration support.
Contact us
Would you like to learn more about our solutions?
We would be happy to advise you—personally, competently, and tailored to your requirements.
Perfection in a new dimension
Further Information
Short delivery times available for selected product configurations.
The TP+ HIGH TORQUE enables maximum torque density and maximum torsional rigidity—ideal for demanding applications with dynamic load changes and high positioning accuracy.
alpha Advanced Line gearboxes with increased durability and food-grade lubrication available.
The TP+ for coordinated pinion-rack systems for medium to high requirements. Typical areas of application in wood, plastic, and composite processing, in machining centers, or in automation.
With cynapse® and smart services, you can unleash the full potential of your drive system: sensor data is processed, visualized, and analyzed intelligently. Find out how the combination of gearboxes with cynapse® and our Smart Services can make your digital production faster, safer, and more efficient.
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