Description
DMC-9940 Galil 4-Axis Standalone Motion Controller, High-Speed Multi-Axis Coordinated Motion Control Unit
Product Application
DMC-9940 is manufactured by Galil Motion Control (USA). It is a standalone compact motion controller, not Foxboro I/A DCS module. It controls up to 4 axes of servo or stepper motors, executing point-to-point positioning, linear interpolation, circular interpolation, continuous path spline motion, electronic gearing and cam profiling. Common applications: semiconductor handling, laser cutting, packaging machines, automated assembly, test equipment and precision positioning stages. It can communicate with PLC, DCS or host PC via Ethernet / serial port for upper system integration.

DMC-9940
Product Specifications
- Part Number: DMC-9940
- Manufacturer: Galil Motion Control
- Product Type: Standalone Motion Controller
- Axis Quantity: 4 axes (servo or stepper)
- Control Modes: Position, Velocity, Torque
- Output: Differential pulse & direction signal, max pulse frequency up to 4 MHz
- Encoder Feedback: A/B/Z incremental encoder input
- Communication: 10/100 Ethernet, RS232, RS485
- Digital I/O: High speed limit / home / index inputs, general-purpose DI/DO
- Power Supply: 12 ~ 24 VDC, typical power consumption ≤15W
- Programming: Galil GML motion language; support GalilTools software for configuration, debug, motion simulation
- Control Loop Rate: 100 μs per axis
- Operating Temperature: -20 ℃ ~ +70 ℃
- Humidity: 5% ~ 95% RH, non-condensing
- Protection Grade: IP20
- Certification: CE
- Product Status: Spare replacement motion controller for automation machine retrofits
- Approx. Weight: 0.5 kg
Core Technical Parameters
- High-speed servo loop with built-in PID + feedforward algorithm to suppress mechanical vibration and positioning overshoot
- Multi-axis synchronous interpolation, linear / circular / spline trajectory
- Electronic cam and electronic gearing function for master-slave synchronization
- Onboard flash memory, store motion programs and parameters without battery backup
- Hardware limit, home and emergency stop fast response
- Support host computer communication via TCP/IP, can connect to DCS/PLC for supervisory control
Recommended Matching Spare Parts & Accessories (8 Items)
- Servo / stepper drive and motors
- Incremental rotary encoder
- 24VDC industrial power supply
- Shielded differential pulse cable
- Limit / home proximity sensors
- GalilTools configuration software
- Ethernet network switch
- DIN rail mounting bracket

DMC-9940
Product Features
✅ 4-Axis Independent & Coordinated Motion Support single-axis point positioning and multi-axis synchronous linear/circular interpolation for complex continuous path motion.
✅ Differential Pulse Output, High Noise Immunity 4MHz differential pulse+direction output, strong anti-interference for industrial cabinet wiring.
✅ Rich Built-in Motion Functions Electronic cam, electronic gear, contouring, registration capture, position latching for automated production line.
✅ Dual Communication Ports (Ethernet + Serial) Ethernet for high-speed host connection; RS232/485 for local debug or PLC integration.
✅ High-Speed Closed-Loop Control 100μs fast servo update rate, PID with feedforward, optimizes positioning smoothness and accuracy.
✅ Standalone Operation Available Can run stored motion program autonomously without continuous PC connection.
✅ Compact DIN mount design Small form factor, easy to install inside machine control cabinet.
Installation Guidelines
- Mount DMC-9940 on DIN rail inside machine cabinet.
- Wire 24VDC power supply to controller power terminals.
- Connect differential pulse outputs to servo/stepper drives; wire encoder feedback to corresponding axis channels.
- Wire limit, home, emergency stop signals to high-speed DI terminals.
- Connect Ethernet or RS232 cable to PC, launch GalilTools to establish communication.
- Configure motor parameters, PID gains, axis travel limits and home sequence.
- Download motion program, perform single-axis jog test and multi-axis interpolation test.
- Verify safety interlock and E-stop function before full production operation.
Maintenance Instructions
Daily Maintenance Check controller power LED status, verify emergency stop and limit sensor function before machine startup.
Periodic Maintenance (Every 6–12 months) Clean dust on controller surface. Check pulse and encoder wiring terminals. Backup motion program and parameter file.
Fault Maintenance
- Axis cannot home: Check home/limit sensor wiring and encoder connection.
- Position deviation or vibration: Tune PID and feedforward parameters, inspect mechanical backlash.
- Communication loss: Inspect Ethernet/serial cable, verify IP address and port setting.
- Do not modify motion program and safety interlock without machine engineer authorization.
Long-Term Operation Tips Keep cabinet temperature within -20~+70℃. Archive program & parameter backup file. Keep spare DMC-9940 for machine emergency replacement.
Brand Same‑Series Models (6 Models)
- DMC-9940 – Galil 4-axis standalone motion controller (Target Model)
- DMC-9920 – Galil 2-axis motion controller
- DMC-9960 – Galil 6-axis motion controller
- DMC-9980 – Galil 8-axis motion controller
- DMC-1842 – PCI bus 4-axis motion control card
- DMC-B140 – Micro motion controller

