Product Short Description
Manufacturer: Delta Tau Data Systems, Inc.
Product Overview:
The ACC-68E is Delta Tau’s highest-density EtherCAT motion controller chassis, supporting up to 68 servo/stepper axes in a single system. It is designed for ultra-large-scale multi-axis machines such as gantry systems, multi-spindle machines, large robot arrays, and complex coordinated motion platforms. The “E” suffix denotes EtherCAT communication.
Description
Technical Specifications:
| Parameter | Value |
|---|---|
| Chassis Model | ACC-68E |
| Maximum Axes | 68 Servo Axes |
| Communication | EtherCAT (100 Mbps) |
| Processor | PMAC-2 DSP (DSP56311 @ 40 MHz) × multiple boards |
| Servo Update Rate | 62.5 μs to 1 ms |
| I/O Capacity | Up to 544 Digital I/O / 64 Analog I/O |
| Memory | Multiple PMAC boards — up to 8 MB Flash aggregate |
| Power Supply | 24 VDC (high-capacity, min 10A) |
| Dimensions | Approx. 762 x 483 x 267 mm (19″ rack, 8U) |
| Weight | Approx. 18 kg (fully loaded) |
| Operating Temperature | 0°C to +55°C |
| Cooling | Forced air — dual fan module |
| Certifications | CE, FCC, UL |
Material Composition:
| Component | Material |
|---|---|
| Chassis | Steel / Aluminum alloy — powder-coated |
| Backplane | 12-layer FR-4 PCB, gold-plated edge connectors |
| Fans | Ball-bearing, 24 VDC |
| Connectors | MIL-DTL, D-Sub, RJ45 |
Structural Features:
- 19-inch rack-mount — 8U height
- Modular multi-board architecture — multiple PMAC-2 controller boards installed simultaneously
- Dual EtherCAT ports — dual network segments for 68 axes
- Redundant power input — dual 24 VDC connectors
- Hot-swap I/O modules
Functional Characteristics:
- 68-axis simultaneous coordinated motion
- EtherCAT distributed clock (DC) — sub-microsecond synchronization across all axes
- 8th-order spline interpolation
- PMAC C / G-Code / CAD-CAM programming
- Extensive macro / PLC logic — up to 64,000 global variables
- Multi-tasking — motion, PLC, and communication run concurrently
Applicable Industries:
- Large Gantry CNC Machines (50+ axes)
- Multi-robot coordinated systems
- Aerospace Structural Machining
- Automobile Body-in-White (BIW) Production
- Large-Scale Additive Manufacturing
Installation Requirements:
- 19″ rack with adequate depth (min 800 mm)
- Dedicated 24 VDC power supply — minimum 10A, 240W
- EtherCAT termination — 120Ω resistor at final node of each segment
- Environmental — clean, dry, vibration-isolated location
- Cooling — ensure front-to-back airflow, minimum 15 cm rear clearance
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