Industrial Applications

The ABB PST60-600-70 Soft Starter is designed to provide controlled starting and stopping for three-phase AC motors in industrial environments. With a rated operational current of 60 A and a main circuit voltage range of 208–600 V AC, it is suitable for a variety of motor-driven applications where reducing starting stress and improving operating control are important.

1. Industrial Pumping Systems

Pumps are widely used in water treatment, chemical processing, manufacturing, and industrial cooling systems. Direct-on-line starting can create sudden torque changes and pressure fluctuations in piping systems.

The PST60-600-70 gradually increases motor voltage during startup, helping reduce mechanical shock and pressure disturbances. Controlled stopping can also help reduce abrupt changes in flow, depending on the pump and system configuration.

2. Fan and Blower Applications

Industrial fans and blowers often operate continuously or start frequently as ventilation requirements change. A soft starter can reduce the mechanical stress associated with starting large rotating assemblies.

The PST60-600-70 can be applied to compatible fan motors when the motor current, starting duty, and load characteristics fall within the device’s ratings.

3. Conveyor Systems

Conveyor equipment requires stable motor starting to avoid sudden movement of belts, chains, and transported materials. Controlled acceleration can reduce stress on mechanical components and help prevent products from shifting during startup.

The soft starter can be integrated into conveyor control systems with PLCs, contactors, and other industrial control devices.

4. Compressors

Industrial compressors may require substantial starting torque and can experience significant mechanical and electrical stress during startup. A properly selected soft starter can help manage the starting process.

Before using the PST60-600-70 with a compressor, engineers should verify the compressor’s starting characteristics, unloading arrangement, motor current, and required starting torque.

5. Industrial Processing Machinery

Mixers, agitators, material-handling machines, and other motor-driven equipment may benefit from reduced starting current and smoother acceleration.

The PST60-600-70 can support these applications when its 60 A rating and starting capabilities match the motor and operating conditions.

6. Water Treatment and Utility Equipment

Water treatment facilities and utility installations frequently use pumps, ventilation fans, and auxiliary motors. Soft starting can help reduce electrical and mechanical disturbances during motor startup.

The device can be incorporated into an automation cabinet alongside PLCs, circuit breakers, contactors, and monitoring equipment.

Key Advantages

Reduced Starting Current

Direct-on-line motor starting can produce a high inrush current. The PST60-600-70 controls the motor voltage during startup to help limit the electrical and mechanical effects of starting.

The actual starting current depends on the motor, load, current-limit settings, and application conditions.

Controlled Acceleration

Adjustable starting parameters allow engineers to configure the acceleration process according to the connected motor and driven equipment.

This can help reduce sudden torque changes and improve the starting behavior of pumps, fans, conveyors, and other machinery.

Controlled Stopping

The soft starter can provide controlled motor stopping according to its supported stopping functions and configuration. This is useful in applications where an abrupt stop may cause mechanical stress or process disturbances.

The appropriate stopping method depends on the load and the system’s operating requirements.

60 A Operating Current

With a rated operational current of 60 A, the PST60-600-70 is intended for medium-sized industrial motor applications within its specified operating conditions.

Correct selection must consider motor current, starting frequency, ambient temperature, installation conditions, and overload requirements.

Wide Main Circuit Voltage Range

The device supports a main circuit voltage range of 208–600 V AC, allowing it to be used in different industrial power systems when the electrical supply and motor ratings are compatible.

Industrial Control Integration

The PST60-600-70 can be incorporated into a wider motor-control system with PLCs, contactors, protective devices, and operator interfaces.

This allows motor starting to be coordinated with production sequences and other automation functions.

Compact Industrial Design

Its supplied dimensions of 260 × 160 × 196 mm make it suitable for installation in appropriately designed industrial control cabinets. Sufficient space must still be provided for wiring, ventilation, and maintenance access.

Technical FAQs

1. What is the ABB PST60-600-70?

The ABB PST60-600-70 is a 60 A soft starter designed to control the starting and stopping of compatible three-phase AC motors. It belongs to ABB’s PST advanced soft starter range.

2. What is the rated current of this soft starter?

Its rated operational current is 60 A under the applicable manufacturer-defined operating conditions. Actual suitability depends on motor current, starting duty, ambient temperature, and installation conditions.

3. What is the main circuit voltage range?

The main circuit operational voltage range is 208–600 V AC. The supply voltage must be compatible with the motor and the installation design.

4. What control supply voltage does it require?

The specified control supply voltage is 110–240 V AC at 50/60 Hz. Check the control wiring and terminal requirements before installation.

5. What motor power can the PST60-600-70 support?

ABB’s selection data lists a 30 kW motor rating at 400 V for normal starts, class 10, in-line operation. The appropriate motor rating may differ under other operating conditions or starting arrangements.

6. What is the purpose of a soft starter?

A soft starter controls the voltage applied to an AC motor during startup. This helps reduce starting current and mechanical shock compared with direct-on-line starting.

7. Can the PST60-600-70 be used with pumps?

Yes. It can be used with compatible pump motors when the electrical ratings and starting characteristics are suitable. Controlled starting and stopping can help reduce pressure disturbances in certain pumping systems.

8. Can this soft starter be integrated with a PLC?

Yes. It can be incorporated into a PLC-based motor-control system using a suitable control and wiring arrangement. Engineers should check the required control signals, status feedback, and available communication options for the exact configuration.

9. What is the weight of the PST60-600-70?

The supplied product weight is 5 kg, which is consistent with ABB’s published 5.0 kg figure for this model. Packaging may increase the total shipping weight.

10. What should be checked before replacing an existing soft starter?

Verify the rated current, main circuit voltage, control supply, motor power, starting class, starting frequency, wiring arrangement, and available control functions. Also check cabinet dimensions and the compatibility of upstream and downstream protection devices.

Introduction

The ABB PST60-600-70 1SFA894006R7000 Soft Starter is an electronic motor-starting device developed for industrial applications that require controlled motor acceleration and stopping. It belongs to ABB’s PST advanced soft starter range and is designed to reduce the electrical and mechanical stresses associated with conventional direct-on-line motor starting.

When an AC motor starts directly across the supply, it can draw a high initial current and generate a sudden increase in torque. These effects may place additional stress on electrical distribution equipment, couplings, belts, pumps, and other mechanical components.

A soft starter addresses these conditions by controlling the voltage supplied to the motor during the starting process. The motor accelerates more gradually, allowing the starting behavior to be adjusted to the application.

The PST60-600-70 has a rated operational current of 60 A and supports a main circuit voltage range of 208–600 V AC. Its control supply operates at 110–240 V AC and 50/60 Hz. ABB’s selection information specifies a 30 kW motor rating at 400 V for normal starts, class 10, in-line operation.

This model is suitable for appropriately rated pumps, fans, compressors, conveyors, and general industrial machinery. Its selection should always be based on the actual motor nameplate, load characteristics, starting frequency, and environmental conditions.

Product Identification

Operating Principle

The PST60-600-70 uses electronic power control to regulate the voltage supplied to the motor during startup. Instead of applying full supply voltage immediately, the soft starter increases the motor voltage according to its configured starting parameters.

This gradual voltage increase helps manage the motor’s acceleration and starting current. Once the motor reaches its normal operating condition, the soft starter operates according to its designed running configuration.

The device also provides controlled motor stopping functions, depending on the selected settings and application requirements.

Main Circuit and Control Circuit

The main circuit carries the electrical power supplied to the motor. Its voltage and current ratings must be compatible with the motor and the installation.

The control circuit supplies the electronics and provides the signals required to operate the soft starter. The PST60-600-70 uses a 110–240 V AC control supply at 50/60 Hz.

Separating the main power circuit from the control wiring helps engineers design a clear and maintainable motor-control arrangement.

Technical Specifications

Installation Considerations

Before installing the PST60-600-70, verify that the motor’s rated current and starting requirements are within the soft starter’s capabilities. The 60 A rating should not be interpreted as a universal motor rating under every operating condition.

The installation should also account for:

• Ambient temperature and cabinet ventilation.
• Starting frequency and operating duty.
• Motor overload protection.
• Upstream short-circuit protection.
• Main circuit and control supply wiring.
• Grounding and electrical safety requirements.
• Required maintenance and inspection access.

The supplied dimensions are 260 × 160 × 196 mm. Confirm the actual mounting drawing and terminal clearances before designing or modifying a control cabinet.

System Integration and Maintenance

The PST60-600-70 can be installed as part of an industrial motor-control panel. A typical arrangement may include a main circuit breaker, upstream protection, the soft starter, a compatible AC motor, and a PLC or other control device.

During commissioning, technicians should verify the supply voltage, control supply, motor connections, command signals, and protective settings. Starting and stopping behavior should be tested under suitable operating conditions before the machine is returned to normal production.

For maintenance, inspect the electrical connections, cabinet ventilation, visible signs of overheating, and the condition of associated protective devices. Any abnormal operating behavior should be investigated before the equipment is returned to service.

When replacing an existing unit, compare the full model number and electrical ratings. A soft starter with a similar current rating may still have different control requirements, starting capabilities, or installation arrangements.

Conclusion

The ABB PST60-600-70 1SFA894006R7000 is a 60 A industrial soft starter designed for controlled starting and stopping of compatible three-phase AC motors. With a main circuit voltage range of 208–600 V AC and a control supply of 110–240 V AC, it can be applied to a range of industrial motor-control systems.

Its controlled starting capability makes it relevant to pumps, fans, compressors, conveyors, and general manufacturing equipment. Correct motor selection, protective-device coordination, installation, and parameter configuration are essential for dependable operation.