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Allen Bradley Bulletin 1394 1394-SJT22-C

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1394-SJT22-C

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The 1394-SJT22-C from Allen Bradley is engineered as a servo control system module. This device utilizes a three-phase AC input voltage ranging from 324 to 528 volts, specifically designed for 50/60 Hz applications. Continuous input current measures 28.6 A RMS, with peak inrush current specified as 8:00 A. The unit supports a nominal DC bus voltage of 530/680 V DC and delivers continuous output power ratings of 17 to 22 kW, achieving peak output power of 136 kW.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1394-SJT22-C

ManufacturerAllen Bradley
Product TypeServo Control System Module
Product LineBulletin 1394
Part Number1394-SJT22-C
Weight15.00 lbs (6.80 kg)
UPC662453482644
AC Input Voltage324–528 V AC, 3-phase, 50/60 Hz
Continuous Input Current28.6 A RMS
Peak Inrush Current (Series C)8:00 A
Line Loss Ride-Through20 ms
Nominal DC Bus Voltage530/680 V DC
Continuous Output Power17/22 kW
Peak Output Power136 kW
Continuous DC Output Current33.8 A
Intermittent DC Current200 A
DC Bus Capacitance660 µF
DC Bus Inductance500 µH
Internal Shunt ResistorNone
Frequency AccuracyDigital: ±0.01% of setpoint; Analog: ±0.4% of max output frequency
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The 1394-SJT22-C is part of the Bulletin 1394 series by Allen Bradley, specifically designed as a versatile servo control system module. With support for a three-phase AC input voltage range of 324–528 V AC, this module operates efficiently within standard 50/60 Hz electrical systems. Continuous input current is rated at 28.6 A RMS, providing robust performance across a wide range of applications. An important characteristic is the peak inrush current rating of 8:00 A, which indicates the power handling capacity during initial startup.

The module features a nominal DC bus voltage of 530/680 V DC, which is essential for converting AC power to DC. It delivers continuous output power ranging from 17 kW to 22 kW, with a remarkable peak output power capacity of 136 kW available in specific situations that demand high energy levels. Continuous DC output current stands at 33.8 A, accommodating the needs of demanding servo systems, and the intermittent DC current can spike to 200 A for short periods when required.

Additionally, this unit has a DC bus capacitance of 660 µF combined with a DC bus inductance of 500 µH, which work together to smooth and stabilize voltage levels within the system. Notably, there is no internal shunt resistor, allowing for streamlined power management. Frequency accuracy is a critical aspect of control systems; here, the module offers digital frequency precision of ±0.01% of the setpoint. For analog signals, the accuracy is ±0.4% of the maximum output frequency, ensuring reliable operation in various applications.