4-Axis USB Motion Controller Board (UC300-4 Axis)
Product Description
The UC300 4-Axis USB Motion Controller by Digital Dream is a high-performance external CNC motion control card designed for Mach3 software. Communicating via a standard high-speed USB interface, it controls stepper or servo motor drives across 4 independent axes (X, Y, Z, A) with pulse and direction signals. Featuring complete optocoupler electrical isolation, integrated 0–10V VFD spindle control, and native support for MPG handwheels, it provides accurate, high-speed, and noise-immune motion control for CNC routers, mills, and engravers.
Key Features
- 4-Axis Motion Control: Controls up to 4 axes (X, Y, Z, A) simultaneously with precision pulse & direction output.
- 300 kHz Pulse Frequency: Outputs up to 300 kHz stepping frequency per axis for high-speed motor operation.
- Dual Power & Photoelectric Isolation: Isolated system and I/O power domains (24VDC) to shield the host computer from electrical noise and voltage spikes.
- Advanced Spindle Control: 0–10V adjustable analog voltage output for VFD speed control (convertible to PWM output) plus Spindle Speed Feedback Input (INDEX).
- 12 Digital Inputs & 10 Digital Outputs: Fully opto-isolated inputs for Limit Switches, Home Sensors, Probes, and E-Stop, alongside a DB9 general-purpose relay output interface.
- Dual MPG Support: Built-in physical toggle switch to support both Standard MPG handwheels and Digital Dream NVMPG pendants.
- Built-in Potentiometer Interface: Dedicated ADJUST port for convenient manual adjustment of Feed Rate Override (FRO), Spindle Speed Override (SRO), and Jogging Mode (SJR).
Product Specifications
- Manufacturer: Digital Dream CNC Co., Ltd.
- Model: UC300 (4-Axis Configuration)
- Software Compatibility: Mach3 (via dedicated DigitalDream USB plugin)
- Controllable Axes: 4 Axes (X, Y, Z, A)
- Max Pulse Frequency: 300 kHz per axis
- Main System Power: 24VDC (Current > 1A)
- I/O Power Supply: 24VDC (Current > 1A)
- Digital Inputs: 12 opto-isolated channels (Supports NPN Proximity Switches / Limit / Probe / E-Stop)
- Digital Outputs: 10 opto-isolated channels (Integrated ULN2803A relay driver circuit)
- Spindle Output: 0–10V Analog voltage / PWM signal + Spindle Feedback (INDEX)
- Host PC Interface: Standard USB Port
Interface & Terminal Connections
- System & I/O Power: 24V, GND (Main Power) / COM+, COM- (I/O Power).
- Axis Outputs (X, Y, Z, A):
- X-Axis: XP+ / XP- (Pulse), XD+ / XD- (Direction)
- Y-Axis: YP+ / YP- (Pulse), YD+ / YD- (Direction)
- Z-Axis: ZP+ / ZP- (Pulse), ZD+ / ZD- (Direction)
- A-Axis: AP+ / AP- (Pulse), AD+ / AD- (Direction)
- Spindle Terminal Block:
- GNDS (Output Ground), VSO (0–10V Speed Signal), OT1 / OT2 (CW/CCW Run Control), INDEX (Feedback Input)
- Inputs: IN01 to IN12 with COM+ / COM- reference terminals.
- General Outputs: DB9 Female Port (Outputs OUT3 to OUT10 & GND).
- Adjustment Port (ADJUST): Terminals for FHA, FHB (Encoder signals), SRO, SJR, and COM-.
- MPG Interface: DB15 Female Port with physical STD / NV mode switch.
Customer Benefits & Applications
- Ideal For: 3-Axis CNC Routers equipped with a 4th Rotary Axis, Milling Machines, PCB Engravers, and Small Industrial Automation.
- Why Buy: Delivers industrial-grade 300 kHz pulse performance per axis over standard USB, replacing legacy parallel ports with superior noise isolation and dual MPG flexibility.
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