DM860C Driver + 86CM45 Stepper Motor Combination Introduction & Quick Deployment Guide

The 86CM45 is an open-loop NEMA34 two-phase stepper motor. It forms a classic open-loop drive combination with the DM860C driver, featuring strong compatibility and stable performance. It is suitable for industrial scenarios that require high positioning accuracy and torque.

I. Core Parameters & Compatibility of the Combination

- DM860C Driver

- Power Supply: DC24-80V, recommended 48-70VDC

- Output Current: Peak 2.4-7.2A, 8 adjustable gears, matching the 6A rated current of the 86CM45 stepper motor

- Micro-Stepping: 16 gears, maximum 40000 pulses per revolution, ensuring smoother operation at low speeds

- Protection Functions: Overvoltage / Undervoltage / Overcurrent / Automatic half-current protection, fault alarm

- 86CM45 Stepper Motor

- Specification: NEMA34, motor length 80mm, shaft diameter 12.7mm

- Performance: 4.5N·m holding torque, rated current 6A, step angle 1.8°

- Features: Low heat generation, low vibration, high precision, compatible with DM860C and other drivers

- Compatibility Notes: The current and micro-stepping of the DM860C driver can be set via DIP switches. It is electrically compatible with the 86CM45, and the wiring is to connect the motor windings to A+/A- and B+/B-.

II. Advantages of the Combination

- Drive Compatibility: Current covers 6A, adjustable micro-stepping, smooth operation at low speeds and sufficient torque at high speeds

- Reliable Operation: Vector control + resonance suppression, low vibration and low noise; complete protection mechanism to reduce faults

- High Usability: Current and micro-stepping set via DIP switches, pulse/direction control, quick installation and commissioning

- Cost-Effectiveness: Mature open-loop solution, meeting most automated scenarios with low maintenance costs

III. Typical Application Scenarios

- CNC machine tools, laser cutting machines, engraving machines (high-precision positioning)

- Automated production lines, packaging machinery, dispensing machines (stable conveying / positioning)

- 3D printers, textile machinery, labeling machines (low vibration and low noise)

IV. Application Recommendations

- Power Supply: Select a high-quality switching power supply of ≥500W, 48-70VDC with filtering and isolation

- Current: Set the DIP switch to 6A to match the rated current of the motor

- Micro-Stepping: Adopt 1600-40000 pulses per revolution for medium and high-precision scenarios, balancing smoothness and responsiveness

- Wiring: Ensure anti-interference of PUL/DIR signals; avoid parallel routing of motor wires and power wires



Quick Deployment Guide for DM860C Driver + 86CM45 Stepper Motor Combination

This guide is specially designed for this classic NEMA34 two-phase open-loop stepper combination. It covers wiring specifications, DIP switch settings, commissioning steps and precautions, suitable for both beginners to get started and experienced technicians for quick troubleshooting, and applicable to various positioning scenarios in industrial automation.

I. Core Basic Information of the Combination (Quick Reference)


Equipment Model Core Parameters Compatibility Key Points
DM860C Driver DC24-80V power supply, 2.4-7.2A peak current, 16-speed micro-stepping, full fault protection Adjustable current to match 86CM45, DIP switch setting without software, open-loop pulse/direction control
86CM45 Stepper Motor NEMA34 specification, 4.5N·m holding torque, 6A rated current, 1.8° step angle Motor windings are connected to A+/A- and B+/B- of the driver; reverse connection is strictly prohibited (it will affect the rotation direction)

II. Wiring Diagram (Simplified Specifications to Avoid Wrong Wiring)

1. Power Supply Wiring (Driver Power Supply)

- Input Terminal DC+ → Positive pole of 48-70VDC switching power supply (recommended ≥500W with filter terminal)

- Input Terminal DC- → Negative pole of the switching power supply

- ✅ Must be connected: Connect a 1000μF/50V capacitor in parallel at the power terminal to reduce voltage fluctuation; ground the housing (PE) for anti-interference

2. Motor Wiring (Driver → Motor)


DM860C Wiring Terminal 86CM45 Motor Lead Notes
A+ Motor Winding A Positive (usually red) Connect windings in pairs; do not mix A/B winding groups
A- Motor Winding A Negative (usually black) Reverse connection will cause the motor to rotate in the opposite direction, which can be corrected by swapping A+/A- or B+/B- during subsequent commissioning
B+ Motor Winding B Positive (usually green)
B- Motor Winding B Negative (usually blue)

3. Control Signal Wiring (Controller → Driver)

- PUL+ → Pulse signal positive (positive pulse output of PLC/single-chip microcomputer)

- PUL- → Pulse signal negative (signal ground, differential wiring is recommended for anti-interference)

- DIR+ → Direction signal positive (controls the forward and reverse rotation of the motor)

- DIR- → Direction signal negative (signal ground, common ground with pulse signal)

- ❌ Prohibited: Do not route control signals and power wires in parallel; the distance between them shall be ≥10cm

III. DM860C DIP Switch Setting Table (Key! Match Optimal Motor Performance)

The DM860C is equipped with 8 DIP switches (SW1-SW8), divided into two groups: current adjustment (SW1-SW4) and micro-stepping adjustment (SW5-SW8). We set the optimal parameters for the 86CM45 (6A rated current) as follows:


DIP Switch Purpose DIP Switch Position DIP Switch Status (ON=On, OFF=Off) Setting Value Compatibility Notes for 86CM45
Current Adjustment SW1-SW4 SW1=ON, SW2=ON, SW3=OFF, SW4=OFF 6.0A Fully matches the rated current of 86CM45 to avoid overcurrent and heat generation
Micro-Stepping Adjustment SW5-SW8 SW5=ON, SW6=OFF, SW7=OFF, SW8=OFF 1600 Pulses/Revolution Optimal for medium and high-precision scenarios, smooth operation without jitter at low speeds; for higher precision, the DIP switch can be adjusted to 40000 pulses/revolution

✅ Note: DIP switch settings must be performed when the power is cut off. The settings will take effect after restarting the driver.

IV. Step-by-Step Commissioning Steps (Power On → Normal Operation, 3 Steps to Complete)

1. Power-Off Recheck: Check the positive and negative poles of the power supply, motor winding wiring, and DIP switch status. After confirming that everything is correct, turn on the power switch. The driver indicator light will be on (green light for normal operation, red light for fault alarm).

2. No-Load Test: Send pulse/direction signals and let the motor run without load for 3-5 minutes. Observe: ① No obvious vibration or noise; ② The motor housing is slightly heated (≤60℃ is normal); ③ The rotation direction meets the control requirements (reverse connection can be corrected by swapping A+/A- or B+/B-).

3. Load Test: Connect the actual load (such as engraving machine, conveyor line) and run it for 10-20 minutes. Check: ① No deviation in positioning accuracy; ② No red light alarm of the driver; ③ The motor torque meets the load requirements (if insufficient, the current can be properly increased, but not exceeding the peak value of 7.2A).

V. Quick Troubleshooting of Common Faults (Essential for On-Site Emergency)


Fault Phenomenon Probable Causes Quick Solutions
Driver red light is on, motor does not rotate Overcurrent / Overvoltage / Undervoltage; short circuit of motor wiring Cut off the power to check the motor windings; verify the power supply voltage; reduce the current
Motor runs with severe jitter and loud noise Low micro-stepping setting; insufficient current Increase the micro-stepping to 1600 or above; confirm the current is set to 6A
Large positioning deviation Pulse signal loss; loose wiring Fasten the control signal wiring; keep away from power wires for anti-interference
Severe heat generation of the motor Excessively high current; poor heat dissipation Reduce the current to 6A; clean the heat sink of the driver to ensure ventilation