A-B | 1394C-SJT22-A | Servo System Module

Product code: N/A

A-B | 1394C-SJT22-A | Servo System Module

Original price was: ¥99,999.00.Current price is: ¥1,588.00.

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Detailed content

The Allen-Bradley 1394C-SJT22-A is a Series C System Module from the Bulletin 1394 Multi-Axis Motion Control System. It provides the main power conversion, servo bus management, and control interface functions required for multi-axis AC servo applications. The module supports analog ±10V DC velocity or torque command interfaces and can operate with multiple axis amplifier modules in high-performance motion systems.

The 1394C-SJT22-A is designed for high-power motion applications such as CNC machines, gantry systems, robotics, and precision manufacturing equipment. It includes Series C enhancements such as improved terminations, EMI filtering, and Smart Power technology. The system module supports up to four axes and provides a 22 kW continuous power output class.

Product Parameters

Parameter	Description
Brand	Allen-Bradley (A-B)
Model	1394C-SJT22-A
Series	Bulletin 1394 Series C Multi-Axis Motion Control System
Product Name	Servo System Module
Module Type	Analog Servo Controller / Power System Module
Control Interface	±10V DC Analog Velocity / Torque Command
Input Voltage	324–528 VAC, 50/60 Hz, 3 Phase
Nominal DC Bus Voltage	530/680 VDC
Continuous Output Power	17/22 kW
Peak Output Power	136 kW
Continuous Output Current	33.8 A
Peak Output Current	200 A
Efficiency	Approx. 98%
Axis Capacity	Up to 4 Servo Axes
Communication Interface	SCANport Interface
Capacitance	660 µF
Inductance	500 µH
External Shunt	Required
Dimensions	Approx. 400 × 150 × 280 mm
Weight	Approx. 12.9 kg (28.5 lbs)
Origin / Place of Origin	USA
Product Status	New Surplus / Original Replacement Part
Discontinued	Legacy product; replaced by newer motion control platforms

Common Questions & Answers

Q: What is the function of the 1394C-SJT22-A?
A: It serves as the main power and control module for Allen-Bradley 1394 multi-axis servo systems, supplying DC bus power and coordinating connected axis amplifier modules.

Q: What servo motors are compatible with this module?
A: The 1394C-SJT22-A is commonly used with Allen-Bradley 1326 series servo motors and compatible 1394 axis modules in multi-axis motion systems.

Q: What are common failure symptoms?
A: Typical problems include DC bus faults, axis communication errors, overcurrent alarms, power-up failures, overheating, and loss of servo positioning control.

Q: What should be checked before replacement?
A: Verify input voltage, axis module compatibility, motor feedback wiring, shunt requirements, control interface type, and system configuration before installation.

Q: Does the 1394C-SJT22-A include an internal shunt resistor?
A: No. The 22 kW system module requires an external shunt solution for regenerative energy management.

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