Overview
The Allen-Bradley 1394-AM03/B is a dual-channel servo axis amplifier module designed for 1394 series multi-axis motion control systems. As part of Rockwell Automation’s proven servo portfolio, this module converts DC bus power to variable AC voltage output, enabling precise control of AC servo motors in industrial automation environments. The /B revision represents Series B specification with mature design optimization.
Key Features
- 2 kilowatt continuous power output — sufficient for single or dual-axis high-performance servo applications
- Slide-and-lock connector interface — eliminates 100+ wire terminals for faster integration and reduced panel space
- 98% power conversion efficiency — IGBT-based switching minimizes thermal load and cooling requirements
- Integrated current monitoring & thermal overload detection — factory-configured protective diagnostics
- Digitally-adjusted velocity control & current loop compensation — accommodates variable system inertia without field tuning
- Compatible with GMC, GMC Turbo, and IMC architectures — supports SERCOS and analog servo configurations
Technical Specifications
- Input Voltage: 530–680V DC
- Continuous Current (RMS): 3.0A
- Peak Current (1 second RMS): 6A @ 200% peak limit adjust
- Continuous Power Output: 1.6/2 kW (depending on nominal AC voltage: 360–460V three-phase nominal)
- Power Dissipation: 1.6/2 – 3.2/4 kW @ 380/460V AC
- Static Gain: 1.28 RMS A/mV
- Modulation Frequency: 5 kHz (±10% accuracy)
- Speed Regulation: 0–0.05% of base speed with 100% torque disturbance
- DC Bus Capacitance: 110 µF
- Dimensions: 13.78 × 11.02 × 1.97 inches
- Weight: 11.02 lbs (5 kg)
- Series: 1394 (Series B)
Typical Applications
The 1394-AM03 is widely deployed in:
- Material handling and conveyor systems
- High-speed packaging machinery
- Press load/unload automation
- Converting and cutting equipment
- Multi-axis CNC and motion control platforms
- Industrial robotic arms and gantries requiring independent axis drive
Compatibility & Replacements
Compatible With
- 1394 system modules (acts as axis amplifier in modular 1394 drive stacks)
- 1394 GMC and GMC Turbo integrated motion controller systems
- 1394 IMCâ„¢ Class Compact motion controllers
- Three-phase AC servo motors rated for 360–480V nominal operation
- Rockwell Automation SERCOS and analog servo feedback networks
- Studio 5000 and ControlLogix/CompactLogix platforms via standard 1394 integration
Replaces / Drop-In Replacement For
- 1394-AM03-A (Series A) — functionally compatible with identical pinout
- Other Series A/B axis modules in mixed 1394 systems — up to 4 axis modules per system
- Note: 1394C-AM04 (Series C) offers enhanced performance but requires system compatibility verification. Consult Rockwell Automation documentation for field upgrades.
Works With
- Rockwell Automation Studio 5000 (formerly RSLogix 5000)
- 1394 native network protocols and EtherNet/IP integration
- Analog feedback devices (resolvers, encoders)
- SERCOS communication interface
- Standard three-phase 360V or 480V industrial power distribution (with line reactor or isolation transformer recommended)
