ABB's softstarters increase a motor's lifetime by protecting it from electrical stresses. They do so by letting you optimize starting currents that with conventional starting methods put lots of stress on the motor. With many built-in motor protection features, your motor is safe in its hands. ABB's softstarters are also installation-friendly and can cut your assembly and startup time by being easy to use and easy to learn. With everything that you need in one unit, from bypass contactor to overload protection, a single Softstarter makes for a compact and complete starting solution. Furthermore, with many application specific features, ABB's softstarters can ultimately help you increase productivity. Torque control, pump cleaning and many more features let you do more than simply softstarting.
ABB soft starter has a small size and a new attractive design. It is a novel motor control device that integrates motor soft start, soft stop, light load energy saving and multiple protection functions. It can realize field bus control and is easy to set and debug. . Its main composition is a three reverse parallel thyristor and its electronic control circuit connected in series between the power supply and the controlled motor. Different methods can be used to control the conduction angle of the three opposite parallel thyristors, so that the input voltage of the controlled motor changes according to different requirements, and different functions can be achieved.
Main benefits:
Secure motor reliability
Improve installation efficiency
Increase application productivity
Main features :
ABB's softstarters cover any motor application from 3 A to 2160 A
Reduced starting current and less electrical stress on the motor and the network
Fast and easy to install and set-up with a small footprint
Reduced mechanical wear and tear on mechanical equipment.
The following is the product model and its introduction：
PSE18-600-70, PSE25-600-70, PSE30-600-70, PSE37-600-70, PSE45-600-70, PSE60-600-70, PSE72-600-70, PSE85-600-70, PSE105-600-70, PSE142-600-70, PSE170-600-70, PSE210-600-70-1, PSE250-600-70-1, PSE300-600-70-1, PSE370-600-70-1, PSE210-600-70, PSE250-600-70, PSE300-600-70, PSE370-600-70
PSTX30-690-70, PSTX37-690-70, PSTX45-690-70, PSTX60-690-70, PSTX72-690-70, PSTX85-690-70, PSTX105-690-70, PSTX142-690-70, PSTX170-690-70, PSTX210-690-70, PSTX250-690-70, PSTX300-690-70, PSTX370-690-70, PSTX470-690-70, PSTX570-690-70, PSTX720-690-70, PSTX840-690-70, PSTX1050-690-70, PSTX1250-690-70
1. PSTX softstarter - The advanced range
The PSTX combines many years of research and product development with extensive knowledge of application specific requirements and needs. The PSTX is our latest advancement in motor control and protection and adds new functionality with increased reliability to any motor starting application.
Main benefits:
Secure motor reliability
Improve installation efficiency
Increase application productivity
Main features:
Three-phase controlled
Operational voltage: 208-690 V AC
Wide rated control supply voltage: 100-250 V, 50/60 Hz
Rated operational current: 30…1250 A (inside delta: 2160 A)
Coated circuit boards
Torque control for excellent control of pumps.
The PSTX series soft starter is ABB's in-depth understanding of industry applications for many years of technical experience and special application requirements. Therefore, the intelligent motor control and protection equipment developed on the basis of traditional soft starters, and ABB soft starter PSTX Many new features have also been added and improved reliability in practical applications.
Three-phase control
Built-in bypass reduces energy consumption and eases installation
Rated working voltage: 208-690VAC
Integrated Modbus RTU for monitoring and control
Rated control power voltage: 100-250V, 50 / 60HZ
Supports all major communication protocols
Rated working current: 30-1250A (internal maximum 2160A)
With analog output signal, selectable as running current, voltage, function factor, etc.
Internal or external
Control panel with protective coating protects against dust, moisture and corrosive gases
Emergency fire mode, in case of emergency, according to user settings, the protection function is closed to force the motor to run
Detachable keyboard, protection class IP166 (type 1, 4X, 12)
Ramp mode to quickly reset the starter motor if one phase of the thyristor of the ABB soft starter PSTX is accidentally damaged
Graphical LCD display, 17 languages available for easy setup and operation
Motor preheating function to ensure the safe start of the motor.
Dynamic braking helps to quickly stop loads with large moments of inertia such as fans
ABB soft starter PSTX integrates comprehensive motor protection functions, which can respond to abnormal conditions of load and power grid. PT100, ground fault protection, overvoltage / undervoltage protection and other functions can ensure reliable and continuous operation of the motor.
In addition, ABB soft starter PSTX also provides three current limiting methods: standard, dual current limiting and current ramps, which help to comprehensively control the starting of the motor, which can ensure the normal use of the motor even in a relatively poor grid environment.
When the motor is running at full speed, the ABB soft starter PSTX will automatically activate the built-in bypass. The purpose of this is to reduce the energy consumption of the soft starter by reducing heat generation. The clear user-friendly display interface saves time during the operation setting and operation process, and also indirectly improves the salary efficiency. The full series of PSTX models can be equipped with a separate keyboard.
ABB soft starter PSTX has perfect water pump control function, tapping the greatest potential to improve equipment production efficiency. The soft starter torque control function is the most effective way to control the start and stop of the pump. At the same time, the pump cleaning function can make the pump reverse the behavior to clean the pipeline, which ensures the normal running time of the pump system. The soft starter's low-speed forward and reverse functions make it more flexible when operating loads such as conveyors and cranes, and it also has a positioning function to control the production process more accurately.
2. PSR softstarter - The compact range
The PSR softstarter range is a simple yet reliable starting solution that utilizes only the most basic of soft starting features: soft start and stop. It performs well in applications requiring many starts per hour and is perfect for installations where you need to save space.
Main benefits:
Small and compact starting solution
Can perform many starts per hour
Reduce energy loss at full speed with built-in bypass.
Main features:
Rated operational current: 3 to 105 A
Operational voltage: 208–600 V AC
Control supply voltage: 24 V AC/DC or 100–240 V AC.
3. PSE softstarter - The efficient range
The new generation PSE is a true general purpose softstarter. It´s a perfect balance between high starting capacity and cost efficiency. Now featuring built-in fieldbus communication.
Main benefits:
Keep your motor safe with built-in motor protections
Fast and easy set-up with illuminated, language-neutral display
Eliminate water hammering with torque control
Reduce energy losses with built-in bypass.
NEW Built-in modbus
Main features:
Rated operational current: 18 to 370 A
Operational voltage: 208–600 V AC
Control supply voltage: 100–250 V AC
Soft starter works:
The soft starter uses three opposite parallel thyristors as voltage regulators, which are connected between the power supply and the motor stator. This circuit is a three-phase full-control bridge rectifier circuit. The main circuit diagram is shown in Figure 1. When a soft starter is used to start the motor, the output voltage of the thyristor gradually increases, and the motor gradually accelerates until the thyristor is fully turned on. The motor works on the mechanical characteristics of the rated voltage to achieve smooth startup, reduce the starting current, and avoid starting overcurrent trips. When the motor reaches the rated number of revolutions, the start-up process ends. The soft starter automatically replaces the thyristor with a bypass contactor to provide the rated voltage for the normal operation of the motor to reduce the heat loss of the thyristor and extend the service life of the soft starter. , Improve its work efficiency, and make the grid avoid harmonic pollution. The soft starter also provides a soft stop function. The soft stop is opposite to the soft start process. The voltage gradually decreases and the number of revolutions gradually decreases to zero to avoid the torque shock caused by free stop.
Selection of soft starter:
(1) Selection: The common soft starters on the market are bypass type, no bypass type, energy saving type, etc. Choose different types of soft starters according to the nature of the load.
Bypass type: When the motor reaches the rated number of revolutions, the soft starter that has completed the task is replaced with a bypass contactor to reduce the heat loss of the thyristor and improve its working efficiency. You can also use a soft starter to start multiple motors.
Non-bypass type: The thyristor is in a full-on state, and the motor works in full voltage mode, ignoring the voltage harmonic components, and it is often used for short-term repeated motors.
Energy-saving type: When the load of the motor is light, the soft starter automatically reduces the voltage applied to the motor stator, reduces the motor current excitation component, and improves the motor power factor.
(2) Selection specifications: Select the starter according to the nominal power of the motor and the nature of the current load. Generally, the capacity of the soft starter is slightly larger than the working current of the motor. It should also consider whether the protection function is complete, such as phase loss protection, short circuit protection, overload protection , Reverse sequence protection, overvoltage protection, undervoltage protection, etc.
The main circuit voltage of ABB soft starter is 380V, 690V. Take PSS type as an example. The main circuit is marked with red, the main circuit is 230-500V, the corresponding model is -500 series; the main circuit is 400-690V, the corresponding model is- 690V series. The industrial voltage in our country is usually 380V, so the -500 series should be selected. The 690V soft start is much more expensive.
ABB soft starter has a small size and a new attractive design. It is a novel motor control device that integrates motor soft start, soft stop, light load energy saving and multiple protection functions. It can realize field bus control and is easy to set and debug. . Its main composition is a three reverse parallel thyristor and its electronic control circuit connected in series between the power supply and the controlled motor. Different methods can be used to control the conduction angle of the three opposite parallel thyristors, so that the input voltage of the controlled motor changes according to different requirements, and different functions can be achieved. All boundaries are ahead, reducing installation time and reducing maintenance costs.
Abb soft starter protection features:
1. Overload protection function: The soft starter introduces a current control loop, so it can track and detect the change of motor current at any time. By increasing the setting of the overload current and the inverse time control mode, the overload protection function is realized. When the motor is overloaded, the thyristor is turned off and an alarm signal is issued.
2. Phase loss protection function: During operation, the soft starter detects the change of the three-phase line current at any time, and once a current interruption occurs, a phase loss protection reaction can be made.
3. Overheating protection function: The temperature of the thyristor radiator is detected by the internal thermal relay of the soft starter. Once the temperature of the radiator exceeds the allowable value, the thyristor is automatically turned off and an alarm signal is issued.
4. Other functions: Through the combination of electronic circuits, other interlocking protections can also be realized in the system.
Energy saving principle of abb soft starter:
The motor is an inductive load and the current lags the voltage. Most electrical appliances are in this category. In order to improve the power factor, it must be compensated with a capacitive load, and capacitor or with a synchronous motor. Reducing the exciting current of the motor can also improve the power factor (HPS2 energy saving function, reducing the voltage at light load, reducing the exciting current and increasing COS∮). Energy-saving operation mode: reducing the voltage at light load reduces the exciting current, the motor current is divided into active and reactive components (excitation component) to improve COS∮.
