Overview
Allen-Bradley 1394-AM04 is an axis amplifier module from the Bulletin 1394 product family of multi-axis digital servo drives. This Series A/B module is an integral component of the 1394 GMC or GMC Turbo motion control system, designed to convert DC power supplied by 1394 system modules into variable AC voltage for precise servo motor control. The 1394-AM04 is an inverter with no heatsink, making it compact and easy to integrate into existing control panels.
Key Features
- 3-kilowatt continuous output rating at 390 Volts AC, with peak power handling up to 9 Amps
- High efficiency – 98% power conversion efficiency reduces heat and power losses
- Slide-and-lock module connection – eliminates up to 100 wire terminals, reducing panel space and installation time
- Modular multi-axis support – up to four axis modules per 1394 system for coordinated servo control
- Compact form factor – measures 13.78 × 11.02 × 1.97 inches, weighs 11.02 pounds for space-constrained applications
- Series A/B with Series C interchangeability – backward compatible with 1394C-AM04 modules
Technical Specifications
- Input Voltage (DC): 530–680 Volts DC
- Input Current: 4.8 Amperes
- Output Voltage (AC, 3-phase): 310–390 Volts AC
- Output Frequency Range: 0–240 kilohertz
- Continuous Output Current: 4.5 Amperes
- Peak Output Current: 9 Amperes
- Continuous Output Power: 2.4 kW @ 310V AC; 3.0 kW @ 390V AC
- Power Efficiency: 98%
- Modulation Frequency: 5 kHz ±10%
- Speed Regulation: 0 to 0.05% of base speed at 100% torque load
- Static Gain: 2.6 (RMS A/mV)
- Output Capacitance: 110 µF
- Operating Temperature Range: 0 to 50°C (32 to 122°F)
- Vibration Tolerance: 1G peak; Shock Tolerance: 15G
- Dimensions: 13.78 × 11.02 × 1.97 inches (350 × 280 × 50 mm)
- Weight: 11.02 pounds (5 kilograms)
- Certifications: UL, c-UL, CE
- Series: A/B (interchangeable with Series C)
Typical Applications
- Coordinated multi-axis servo systems in CNC machines and industrial robots
- High-speed packaging and material handling equipment
- Press load/unload and converting operations
- Motion control systems requiring 0.05% speed regulation and precise torque management
- Panel-space-constrained applications benefiting from modular slide-and-lock architecture
Compatibility & Replacements
The 1394-AM04 is designed for the Allen-Bradley 1394 system module family, including 1394x-SJT05, 1394x-SJT10, and 1394x-SJT22 variants. It is compatible with a wide range of Allen-Bradley servo motors, including 1326AB (1326AB-B410G, 1326AB-B410J, 1326AB-B420E, 1326AB-B420H, 1326AB-B430E) and 1326AS series motors (1326AS-B330H, 1326AS-B420G, 1326AS-B440G, 1326AS-B460F). The 1394-AM04 Series A/B is interchangeable with the 1394C-AM04 Series C axis module. One axis module is required for each servo motor in the system, and up to four modules can operate in a single 1394 system for coordinated multi-axis control. Pairing the 1394-AM04 with secondary circuit protection devices (such as 1492-CB3-H300, 1492-CB3-H500, or 1492-CB3-H600 depending on system configuration) prevents nuisance tripping.
