GRMOT DM860H-KT Digital Stepper Motor Driver 2-Phase 7.2A Peak AC20–80V / DC30–110V 200–40,000 Microsteps RS232 Debugging

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SKU: BE02960
Availability : In Stock Pre order Out of stock
Categories: GRMOT Drivers Stepper/BLDC/Servo Motor Drivers
Description

Introducing the GRMOT DM860H-KT Digital Stepper Motor Driver—engineered for reliability and performance, this driver stands apart from the many budget DM860H-KT knockoffs flooding the market. Inspired by the renowned Leadshine DM860H, the GRMOT DM860H-KT offers superior build quality, enhanced component selection, and more precise motor control compared to typical low-cost alternatives. Whether you’re upgrading from an unreliable clone or searching for performance that comes close to industry-leading solutions without the high price tag, this driver delivers dependable operation and long-term durability you can trust.

Applications

  • CNC routers, milling machines, and lathes

  • Laser engraving and cutting machines

  • Large-format plotters and marking systems

  • Automated assembly and packaging equipment

  • High-speed robotics and motion platforms

Features

  • Latest 32-bit DSP control for precision and stability

  • RS232 serial debugging with MODBUS-RTU support

  • Microstep settings from 200 to 40,000 steps/rev

  • Wide input voltage: AC20–80V / DC30–110V

  • Adjustable output current up to 7.2A peak (5.14A RMS)

  • Vector control and micro-segmentation for smooth motion

  • Automatic half-current mode when idle

  • Optically-isolated differential inputs for strong noise immunity

  • Comprehensive protections: overvoltage, undervoltage, overcurrent, short circuit, phase loss

Data Sheet:- Click Here

Specifications

Parameter Value
BRAND  GRMOT
Output Current (Peak) 2.4A – 7.2A
Output Current (RMS) 1.71A – 5.14A
Input Voltage Range (AC) 20 – 80V AC
Input Voltage Range (DC) 30 – 110V DC
Microstep Resolution 200 – 40,000 steps/rev (DIP & software set)
Control Signal Input Voltage 5–24V DC
Control Signal Input Current 7–16 mA
Maximum Pulse Frequency 200 KHz
Motor Compatibility 2-phase hybrid stepper motors
Motor Frame Size Range 57mm – 110mm outer diameter
Compatible Motor Wiring 4, 6, or 8-wire
Cooling Method Natural or fan-assisted
Insulation Resistance ≥ 50 MΩ
Operating Temperature 0°C – 50°C
Storage Temperature -20°C – 65°C
Humidity Range 40–90% RH
Protection Functions Short circuit, overvoltage, undervoltage, phase loss

DIP Switch Settings Overview

Current Settings (SW1–SW3):

Peak (A) RMS (A) SW1 SW2 SW3
2.4 1.71 ON ON ON
7.2 5.14 OFF OFF OFF

When all OFF, current can be set via PC software (up to 6.0A effective).

Idle Current (SW4):

  • OFF: 50% idle current (recommended)

  • ON: 100% idle current

Microstep Settings (SW5–SW8):

Steps/Rev SW5 SW6 SW7 SW8
400 ON ON ON ON
40,000 OFF OFF OFF OFF

Protection Functions

  • Short Circuit / Overcurrent – Red LED blinks once

  • Overvoltage (>AC80V / DC110V) – Red LED blinks twice

  • Undervoltage (<AC20V / DC30V) – Red LED blinks three times

  • Phase Loss – Red LED blinks five times

Package Includes

1 x DM860H-KT Digital Stepper Motor Driver