Technical Specifications

FAQ

1. What is the ABB PSE142-600-70 1SFA897110R7000 used for?
The ABB PSE142-600-70 is a soft starter designed for controlling the starting and stopping of three-phase AC motors. With a rated operational current of 143 A and an operating voltage range of 208–600 V AC, it is suitable for applications such as pumps, fans, compressors and conveyors. By controlling the motor voltage or torque during acceleration, the soft starter reduces starting current and mechanical stress compared with direct-on-line starting.

2. What motor power can the PSE142-600-70 support?
The applicable motor power depends on the operating voltage. The PSE142-600-70 is rated for motors up to approximately 40 kW at 230 V, 75 kW at 400 V and 90 kW at 500 V under the specified operating conditions. Final selection should also consider the motor’s rated current, starting characteristics, load type, operating cycle and ambient conditions rather than relying only on motor power.

3. How does the ABB PSE142-600-70 perform soft starting and soft stopping?
The PSE142-600-70 uses two-phase control and can provide controlled starting and stopping through voltage or torque ramps. During starting, the controller gradually increases the motor voltage or torque to provide smoother acceleration. During stopping, the controlled ramp can reduce mechanical stress and is particularly useful for applications such as pumps where sudden stopping may contribute to hydraulic shock.

4. Does the PSE142-600-70 have a built-in bypass function?
Yes. The PSE142-600-70 includes a built-in bypass function. Once the motor has completed the starting sequence and reached normal operating conditions, the bypass can reduce the power losses and heat generated by the soft starter during continuous operation. Correct bypass operation should be verified during commissioning according to the motor and load requirements.

5. What motor protection functions are available on the PSE142-600-70?
The PSE142-600-70 provides integrated electronic motor protection and includes functions such as electronic overload protection, underload protection and locked-rotor protection. It also provides current limiting and Kick Start functionality for demanding starting conditions. These functions can help protect the motor and support more controlled operation when the load experiences overload, underload or high starting resistance.

6. What communication options are available on the ABB PSE142-600-70?
The PSE142-600-70 provides built-in Modbus RTU communication and can support FieldBusPlug communication through a suitable adapter. It can also be integrated using hardwired control signals for basic start, stop and fault-reset functions. When connecting the soft starter to a PLC or automation system, the communication parameters and control architecture should be configured according to the system design.

7. What should be checked if the PSE142-600-70 frequently trips during motor starting?
First verify that the motor rated current and protection settings are correctly configured and check the incoming voltage, motor wiring and control supply. Then review the start ramp time, current limit, Kick Start settings and overload protection parameters to determine whether they match the actual load characteristics. If the motor requires high starting torque, also inspect the mechanical load for excessive resistance, bearing problems, jamming or other conditions that could cause abnormal starting current.

8. What should be considered when installing and commissioning the ABB PSE142-600-70?
The main power circuit, motor connections and control wiring must be installed according to the electrical system design, with adequate cabinet ventilation and heat dissipation. During commissioning, configure the motor rated current, starting and stopping ramps and applicable protection functions according to the motor nameplate and actual load. The Start/Stop controls, fault reset, bypass operation and communication functions should then be tested before continuous operation.