
The 1394 9/Series CNC Interface system (1394C-AM75-IH) provides an efficient digital servo system which can be used with both the 9/260 and the 9/290 CNC. It provides power to every electronic device while utilizing a digital interface, making this solution cost-efficient. Servo control for this system is monitored by the 9/Series CNC. A fiber optic I/O ring is featured, and the system is entirely interfaced and programmed using ODS (Off-Line Development System), as well as a CNC operator panel. The most common options with the 9/Series CNC interface systems are Allen-Bradley Remote I/O, Data Highway Plus (9/260 and 9/290 only), and MMS/Ethernet (9/260 and 9/290 only) communications.
Technical specifications
| Part Number/Catalog No. | 1394C-AM75-IH |
| Product Line | Servo Controller |
| Module Type | Servo (Axis) Amplifier |
| Output Rating | 23.8 Kilowatt |
| DC Input Voltage | 530-680 |
| Amperage | 35 A |
| Series Enhancements | Filtering (EMI) and Enhanced Terminations |
| Heat Sink Options | Inside Cabinet Heatsink |
| Efficiency | 98% |
| Capacitance | 660 Microfarads |
| Speed Regulation | 0-0.05% of base speed w/ 100% torque disturbance |
| Static Gain | 22.8 rms A/mV |
| Continuous Current (rms) | 35.0 Amperes |
| Peak Current (rms - 1 sec) | 50.0 Amperes |
| Continuous Power 380/460 Volts | 17.8/23.8 Kilowatts |
| Peak Power 380/460 Volts | 25.4/34 Kilowatts |
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core function

1394C-AM75-IH is a high-performance industrial motion control module from Rockwell Automation, designed for high-precision servo drive systems. The module supports IEEE 1394 (FireWire) high-speed communication and is suitable for complex motion systems that require real-time synchronous control, such as robots, CNC machine tools, semiconductor equipment, etc. Its core functions include multi-axis collaborative control, high-precision position management, dynamic response optimization, and industrial-grade anti-interference capabilities to ensure stable operation in harsh environments.
1. Multi-axis high-precision motion control
1394C-AM75-IH supports up to 8-axis synchronous control and is suitable for complex motion scenarios that require high-precision positioning and trajectory planning. The module uses 16-bit high-resolution encoder feedback to ensure position control accuracy of ±0.001mm, and supports advanced motion modes such as electronic gears and electronic cams to meet the needs of CNC processing, robot joint control, etc.
2. Real-time communication and low-latency response
Based on the IEEE 1394b (FireWire 800) communication protocol, the module provides 400Mbps high-speed data transmission to ensure the real-time nature of control instructions, with a typical cycle period of ≤1ms. At the same time, the module supports distributed clock synchronization (IEEE 1588) to reduce timing errors during multi-axis collaboration, and is suitable for dynamic control scenarios such as high-speed packaging lines and flying shears.
3. Industrial-grade reliability and scalability
The module adopts a full metal shell + enhanced EMC design, adapts to a wide temperature environment of -20℃~60℃, and has passed CE/UL Class 1 Div 2 certification, and can be used in hazardous areas. In addition, the module supports hot-swap replacement, which is convenient for production line maintenance, and can add I/O points or integrate safety control functions (such as STO safety torque off) through expansion modules.
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