ABB SDCS-FEX-2A 3ADT311500R1
ABB SDCS-FEX-2A 3ADT311500R1
ABB SDCS-FEX-2A 3ADT311500R1
ABB SDCS-FEX-2A 3ADT311500R1
ABB SDCS-FEX-2A 3ADT311500R1
ABB SDCS-FEX-2A 3ADT311500R1
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SDCS-FEX-2A 3ADT311500R1

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The ABB SDCS-FEX-2A 3ADT311500R1 is an integrated, half-controlled field exciter designed for the DCS 500 system. It functions as a single-phase field supply solution for armature converter modules, specifically types C1, C2, and A5.
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Technical specifications for SDCS-FEX-2A 3ADT311500R1

  • Manufacturer:
    ABB
  • Part Number:
    SDCS-FEX-2A 3ADT311500R1
  • Product Family:
    ABB Drives
  • Product Type:
    half controlled field exciter
  • Stock:
    1
  • AC Input Voltage:
    110 V (-15%) to 500 V (+10%); Single Phase
  • AC Input Current:
    ≤ Output DC Current
  • DC Output Current:
    0.3 A to 16 A (Scalable for best resolution)
  • Current Scaling (Ilim):
    3A, 5A, 7A, 9A, 11A, 13A, 15A, 17A
  • AC Isolation Voltage:
    600 V
  • Frequency:
    Matches the DCS converter module (50/60 Hz)
  • Power Loss at Rated IF:
    ≤ 40 W
  • Analog Output (IACT):
    Uout = 4 V * Iact / Ilim
  • Connection Port:
    Flat cable X14 for control signals
  • Terminal X1 Capacity:
    Cross-sectional area 4 mm²
  • Weight:
    0.34 kg
  • Estimated shipping dimensions:
    24x9x5.2cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Communication & Connectivity Installation & Integration

Features:

  • Integrated Field Excitation Solution Within DCS 500 Armature Converter Modules
  • Delivers Single-Phase AC/DC Power Conversion with Automatic Current Range Selection
  • Functions Alongside the SDCS-CON-2 Control Board and SDCS-POW-1 Power Supply
The SDCS-FEX-2A 3ADT311500R1 serves as the half controlled field exciter in compatible DCS 500 drive modules, providing regulated DC field current to the motor from single-phase AC input. It continuously converts incoming AC power (110 V -15% to 500 V +10%, single phase, same frequency as DCS converter module) to controlled DC field current and delivers this excitation through direct internal mounting beside the SDCS-POW-1 electronic power supply. The SDCS-FEX-2A 3ADT311500R1 occupies a dedicated position inside the armature converter module, always installed adjacent to the SDCS-POW-1 within C1, C2, and A5 type DCS modules, and is not suitable for A6 and A7 (C4) configurations.

The microprocessor reads all information from the power section, receives all required voltage levels and control signals via flat cable X14 from the SDCS-CON-2, and generates the firing pulses for the power section. The output IACT signal is defined as Uout = 4 V × Iact / Ilim, where Ilim can be set to 3A, 5A, 7A, 9A, 11A, 13A, 15A, or 17A. Terminal X1 accepts a cross sectional area of 4 mm². When the SDCS-FEX-2A 3ADT311500R1 is used for smaller field currents, the control unit automatically selects a lower current range between 3 A and 16 A to achieve the best resolution.

For field weakening applications, the SDCS-FEX-2A 3ADT311500R1 ensures the actual field current of the motor at top speed remains higher than 0.3 A, maintaining stable excitation across the entire speed range. The AC isolation voltage of the SDCS-FEX-2A 3ADT311500R1 is 600 V, and the AC input current is less than or equal to the output current. The single phase rated AC input voltage range is 110 V to 500 V, with a maximum current capability of 16 A.

The SDCS-FEX-2A 3ADT311500R1 ABB Half Controlled Field Exciter may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
ABB SDCS-FEX-2A 3ADT311500R1 Half Controlled Field Exciter Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
ABB SDCS-FEX-2A 3ADT311500R1 Half Controlled Field Exciter Specs

General

  • Manufacturer ABB
  • Model SDCS-FEX-2A 3ADT311500R1
  • Condition New Original ready stock
  • Product Family SDCS-FEX-1,SDCS-FEX-2
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Industrial Processes: Found in metals, pulp and paper, material handling, food and beverage, and printing industries.
  • Specialized Machinery: Used in oil rigs, test rigs, ski lifts, magnets, and electrolysis systems.
  • Motor Control: Specifically intended for the supply and control of DC machine armatures.
  • Internal Integration: It connects directly to the SDCS-CON control board and SDCS-POW-1 power supply board within the armature converter module.
  • Signal Processing: It processes both analog and digital signals for precise field current regulation.
  • Control Parameters: In systems like the DCS 600, field supply functions are selected via software parameters (e.g., parameter 15.05).
  • Mounting: The board is typically mounted inside the converter cabinet next to the power supply unit.
  • Input Specifications: It supports a single-phase AC input voltage range from 110 V (-15%) to 500 V (+10%).
  • Operational Limits: It provides DC output currents ranging from 0.3 A to 8 A for smaller converter modules (25 A–75 A) and up to 16 A for larger modules (100 A–2000 A).
  • Safety & Maintenance: Installation must be performed by qualified personnel while the unit is de-energized and locked in the "OPEN" position to avoid electrical hazards.
Description
The SDCS-FEX-2A 3ADT311500R1 is a half controlled field exciter designed and manufactured by ABB, specifically developed for the DCS 500 DC drive system. This model addresses the need for integrated field supply solutions within armature converter modules, eliminating the requirement for externally mounted excitation units in applications where space and integration are critical. It is designed to provide reliable field excitation for DC motors across a broad range of industrial applications, including material handling systems, rolling mills, paper machines, and extrusion equipment, where precise motor speed and torque control depend on stable field current regulation.

The SDCS-FEX-2A 3ADT311500R1 consists of a power section and a control board, with all components electrically and mechanically interconnected to form a compact unit. This arrangement is designed to be mounted inside the armature converter module, positioned adjacent to the electronic power supply SDCS-POW-1. The SDCS-FEX-2A 3ADT311500R1 is intended for installation in DCS modules of type C1, C2, and A5, and is not suitable for A6 and A7 (C4) type modules. Its power section is constructed using two power modules, each comprising one diode and one thyristor, wired and controlled as a half controlled bridge configuration.

The control system of the SDCS-FEX-2A 3ADT311500R1 is fully digital. The microprocessor reads all information from the power section, receives all required voltage levels and control signals via flat cable X14 from the SDCS-CON-2, and generates the firing pulses for the power section. The single phase rated AC input voltage range of the SDCS-FEX-2A 3ADT311500R1 is 110 V to 500 V, with a maximum current capability of 16 A. When the SDCS-FEX-2A 3ADT311500R1 is used for smaller field currents, the control unit automatically selects a lower current range between 3 A and 16 A to achieve the best resolution.
Alternative Names
SDCS-FEX-1 SDCS-FEX-2 SDCS-FEX-2A 3ADT311500R1
Technical notes
The power section of the SDCS-FEX-2A 3ADT311500R1 is built using two power modules, each containing one diode and one thyristor to form a half-controlled bridge. It operates within a wide AC input voltage range of 110 V to 500 V and supports a DC output current ranging from 0.3 A up to 16 A. The control system is fully digital, utilizing a microprocessor that receives firing pulses and control signals from the SDCS-CON-2 board via a flat cable connection at X14.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the primary function of the SDCS-FEX-2A 3ADT311500R1?
Its primary role is to provide controlled field excitation for DC motors used with armature converter modules. By supplying precise DC current to the motor field, it ensures stable motor operation, accurate speed regulation, and efficient torque performance across varying industrial applications.
How is the SDCS-FEX-2A 3ADT311500R1 physically structured?
The unit is composed of two main sections: a power part and a control board. These sections are electrically and mechanically connected as one assembly. The module is designed for internal mounting beside the SDCS-POW-1 electronic power supply, allowing seamless integration into the drive housing.
How does the SDCS-FEX-2A 3ADT311500R1 module improve low-current performance?
The SDCS-FEX-2A 3ADT311500R1 automatically selects a specialized operating range between 3 A and 16 A when needed. This feature provides higher resolution and better control accuracy at lower field currents, which is essential for applications requiring precise motor regulation.

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