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- ABB
- 1SFB536068D1003
- High Voltage Drive Board
- Sweden (SE)
- 250 × 35 × 230 mm
- 0.2 kg
- Xiamen, China
- New & In Stock
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Product Overview
The ABB 1SFB536068D1003 is a PST/PSTB Softstarter High Voltage Drive Board used within the high-voltage switching architecture of ABB PST and PSTB softstarter systems. It forms part of the drive circuitry that connects the softstarter’s control section with the high-power switching devices.
In operation, the board works with the PST/PSTB control electronics to transfer the required drive signals to the power section. This coordinated switching allows the softstarter to regulate motor power during starting and, where configured, during controlled stopping.
The board is relevant to industrial motor-control applications involving pumps, fans, compressors, conveyors, and process equipment. By supporting the controlled switching path, it contributes to the softstarter’s ability to manage motor acceleration rather than applying the full supply condition immediately.
For maintenance work, the 1SFB536068D1003 should be assessed together with the control board, power semiconductor section, internal wiring, protection circuitry, and motor circuit. A failure in another part of the power-control assembly can produce symptoms similar to a drive-board fault.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | 1SFB536068D1003 |
| Product Family | PST / PSTB Softstarter |
| Product Type | Softstarter High Voltage Drive Board |
| Primary Function | High-voltage drive control |
| System Role | Softstarter power-control interface |
| Application | Industrial motor starting and control |
| Dimensions | 250 × 35 × 230 mm |
| Weight | 0.2 kg |
Product Features
- High-voltage drive board for ABB PST/PSTB softstarter systems
- Forms part of the interface between control electronics and power-switching devices
- Supports controlled operation of the softstarter power section
- Suitable for motor starting and controlled stopping applications
- Applicable to industrial high-power motor-control systems
- Works with associated PST/PSTB control and protection circuitry
- Suitable for maintenance and replacement of compatible softstarter assemblies
Working Principle
The 1SFB536068D1003 operates in the drive path of the PST/PSTB softstarter. The control section determines the required switching sequence, while the drive board transfers the corresponding electrical drive signals toward the high-voltage power devices.
During motor starting, the drive circuitry coordinates the switching of the power devices so that the motor receives controlled electrical power. The switching process allows the motor to accelerate progressively according to the softstarter’s configured operating conditions.
When a controlled stopping function is used, the drive path continues to support the required power-switching sequence until the motor reaches the intended stopping condition.
PST/PSTB Control Electronics → 1SFB536068D1003 → High-Voltage Power Devices → Motor
The drive board itself does not replace the PST/PSTB control logic. Its operation depends on the control section, power devices, protection circuitry, and associated internal connections functioning correctly.
Role in an ABB PST / PSTB Softstarter Control Architecture
The 1SFB536068D1003 occupies the drive interface between the electronic control section and the high-voltage power-switching section. It forms part of the path through which control decisions are translated into switching actions in the motor power circuit.
PLC / Control Circuit → PST/PSTB Control Board → High-Voltage Drive Board → Power Switching Section → Motor
| System Element | Function |
|---|---|
| PLC / Controller | Provides automatic motor-control commands |
| Control Circuit | Transfers start, stop, and auxiliary signals |
| PST/PSTB Control Board | Processes softstarter control functions |
| 1SFB536068D1003 | Transfers drive signals to the power section |
| Power Switching Section | Controls electrical power applied to the motor |
| Motor Protection | Monitors and protects the motor circuit |
| Motor | Converts electrical power into mechanical output |
| Driven Equipment | Performs the required industrial process |
This arrangement separates control processing from high-voltage switching while allowing both sections to operate as one softstarter system.
Industrial Applications
| Application | Typical Use |
|---|---|
| Pump Systems | Controlled starting of industrial pump motors |
| Compressor Systems | Managing motor acceleration during compressor startup |
| HVAC Equipment | Starting fans and blowers with reduced starting stress |
| Conveyor Systems | Controlled acceleration of conveyor motors |
| Water Treatment | Starting pumps and process motors |
| Process Machinery | Motor control in automated production equipment |
| Material Handling | Starting heavy motor-driven machinery |
| Industrial Plants | High-power motor control within plant systems |
Installation and Maintenance
- Confirm that the 1SFB536068D1003 matches the installed PST/PSTB softstarter configuration before replacement.
- Isolate the softstarter from all electrical energy sources before accessing internal circuitry.
- Follow the required high-voltage discharge and safety procedures before working on the power section.
- Record existing board connections and connector positions before removing the original drive board.
- Use appropriate ESD precautions when handling the electronic board.
- Inspect connectors and interfaces for contamination, loose connections, or physical damage.
- Check nearby power semiconductors and power-section components for overheating or electrical damage.
- Install the replacement board in the correct position and ensure all connectors are fully seated.
- Verify internal wiring against the approved PST/PSTB electrical documentation.
- Restore control power and check softstarter status and diagnostic indications.
- Perform a controlled motor-start and stopping test while monitoring the softstarter response.
- Verify protection functions, external control signals, and power-section operation before returning the equipment to service.
Compatible System Components
| Component | Function |
|---|---|
| ABB PST Softstarter | Industrial motor softstarting system |
| ABB PSTB Softstarter | High-power motor softstarting system |
| PST/PSTB Control Board | Processes softstarter control functions |
| PST/PSTB Power Section | Performs high-power motor switching |
| Power Semiconductors | Carry out controlled electrical switching |
| Motor Protection Devices | Protect the motor and electrical circuit |
| PLC / Controller | Provides automatic operating commands |
| HMI / Operator Interface | Provides local monitoring and control |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| ABB PST Softstarter Series | Softstarter | Industrial motor starting and control |
| ABB PSTB Softstarter Series | Softstarter | High-power motor starting |
| ABB PST/PSTB Drive Boards | Drive Board | High-voltage power-device drive |
| ABB PST/PSTB Control Boards | Control Board | Softstarter control and processing |
| ABB PST/PSTB Power Sections | Power-Control Section | High-power motor switching |
| ABB PST/PSTB Accessories | Softstarter Accessories | Installation and maintenance |
Key Advantages
- Forms part of the high-voltage drive path in PST/PSTB softstarter assemblies.
- Transfers control actions from the electronic control section toward the power devices.
- Supports controlled motor power switching during starting and stopping.
- Suitable for industrial high-power motor-control applications.
- Useful for replacement and maintenance of PST/PSTB drive-section components.
- Works with the complete PST/PSTB control, power, and protection architecture.
Technical FAQs
Where is the 1SFB536068D1003 located within a PST/PSTB softstarter?
It belongs to the drive section between the softstarter control electronics and the high-voltage power-switching circuitry. Its position allows control signals to be transferred toward the power devices.
What happens if the drive board does not generate the expected switching response?
The power section may fail to switch correctly even though the softstarter receives an operating command. Depending on the fault, the result can be a failed motor start, abnormal starting behavior, or a diagnostic condition.
Which measurements or observations can help isolate a drive-board fault?
Technicians can compare the incoming control command with the expected drive response while checking connectors, power-section condition, diagnostic information, and related control signals. Appropriate test procedures should be followed when working around high-voltage circuitry.
Does replacing the drive board require testing the complete softstarter?
Yes. After replacement, the control section, drive path, power-switching response, protection functions, and external commands should be verified. A controlled motor-start and stopping test helps confirm that the complete assembly is operating correctly.