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    Home » Product » Intelligent Soft Starter » Online integrated soft starter PQZR8-SZ
    Online integrated soft starter PQZR8-SZ
    The PQZR8-SZ series online soft starter is a highly intelligent, reliable, and user-friendly solution designed to simplify setup and offer personalized control. Can be used for frequent start and stop occasion. This design adopts a three-in, three-out silicon-controlled full-time online structure, equipped with a high-power air-cooled radiator and a high-speed axial fan internally to ensure stable and reliable operation for extended periods. It does not require an external AC contactor but can only be used with a single motor.

    Online integrated soft Starter – Parameters


    + Power Range: 11kW~630kW
    + Voltage Input: 3ph x380~415
    + Voltage output: 3ph x380~415
    + Rated Current: 22A~1200A
    + Current Frequency: 50~60Hz (±2%)
    + Soft Starting Rise Time: 2~60s
    + Soft Stop Time: 0~60s
    + Current Limiting Multiple: 1.0~5.0 Ie
    + Initial Voltage: 30%~70% Ue
    + Cooling Method:Forced Air Cooling / Fan Cooling
    + Communication Method: RS485 Serial Communication
    + Acceleration time, s 1-120
    + Starting voltage 30-80%
    + Starting torque limitation 20-400%
    + Maximum operating current 50-200%
    + Protection class:IP20
    + Starts per hour: ≤50 times/hour
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    Features

    ▌Online integrated Soft Starter Advanced Features:

    • Smooth Start, No Inrush Current, Protecting Motors and Mechanical Equipment

    • Constant Current Start, with Current Closed-Loop Control for Precise Control of Starting Current

    • Reduced Voltage Fluctuations, Improved Power Grid Quality

    • Simple Structure, Easy Installation and Maintenance

    ▌Online integrated Soft Starter Characteristics:

    • Intuitive Display:
      Features a large LCD screen that displays feedback in multiple languages and tracks motor condition.

    • Advanced Control:
      Offers advanced start and stop control functions with intuitive programming.

    • Comprehensive Monitoring:
      Provides extensive performance monitoring and error records, including real-time metering display and 99 event logs with time-stamped operation and performance details.

    • Enhanced Performance:
      Compared to bypass soft starters with external AC contactors, this series offers a 3x performance improvement, 2.6x better heat dissipation, 25% increased safety, and 20% improved energy efficiency. It boasts a lifespan exceeding 100,000 cycles.

    • Remote Control:
      A remote-mounted operation keypad can be easily installed on the front of a control panel, facilitating centralized control of multiple soft starters in a single cabinet.

    • Plug-in Terminal Blocks:
      Easy installation and maintenance with plug-in control terminal blocks. Simply remove and reinsert the terminal blocks after connecting the wires.

    ▌Protection Function:
    Phase Loss Protection:
    When any one of the three phases is open-circuited, the protection action time is less than 1 minute.
    Phase Imbalance Protection:
    When the three-phase imbalance K1 or K2 is greater than 10%, the protection action time is less than 10 minutes.
    Over current Protection:
    When the motor is stalled, the protector operates with a delay of (±1s).
    Over voltage Protection:
    When the power supply voltage Ue > 120%, the protection action time is less than 1 second.
    Under voltage Protection:
    When the power supply voltage is (60%-75%) Ue, the protection action time is less than 60 seconds.
    Reset Function:
    Manual reset via the stop button.
    Over temperature Protection:
    When the soft starter operates at an excessive temperature, the soft starter will automatically shut down and report a soft start overheat fault.

    ▌Application Range:

    • Fluid Handling (Pumps & Fans):
      Used in water treatment, HVAC, and industrial ventilation to minimize mechanical stress and improve energy efficiency during startup.

    • Material Transport (Conveyors & Belt Drives):
      Ensures gradual motor speed increase, reducing equipment wear and enhancing operational efficiency.

    • Compression Systems (Compressors):
      Reduces inrush current and mechanical stress in air conditioning, refrigeration, and industrial compressor applications.

    • Mixing & Agitation (Mixers & Agitators):
      Provides smooth, controlled startups in food processing, chemical facilities, and wastewater treatment, minimizing vibration and improving efficiency.

    • Size Reduction (Crushers & Mills):
      Used in mining, cement, and aggregate processing to decrease mechanical stress and enhance energy efficiency.

    ▌Environmental requirements:
    If the altitude exceeds 1000 meters, the capacity should be reduced accordingly. For every 100 meters increase above 1000 meters, the current should be reduced by 0.5%; The relative humidity should not exceed 95% when the ambient temperature is between -10 ℃ and+40 ℃; No condensation, no flammable and explosive gases, no conductive dust, in a well ventilated indoor environment

    Specifications
    ItemitemItem Description
    Input Power SupplyInput VoltageThree Phase 380V-15% ~ 415+10%   50/60Hz

    Adaptive MotorSquirrel-cage three-phase asynchronous motor

    Starting TimesIt is recommended not to exceed 50 times per hour.
    Control ModeControl Mode1) Operation panel control;
    2) Operation panel + external control;
    3) External control;
    4) External control + COM control;
    5) Operation panel + external + COM control;
    6) Operation panel + COM control;
    7) COM control;
    8) No start or stop operation.
    Start Mode
    1) Current-limiting start;
    2) Voltage ramp start;
    3) Kick start + current-limiting start;
    4) Kick start + voltage ramp start;
    5) Current ramp start;
    6) Voltage current-limiting double closed-loop start.
    Stop Mode
    1) Soft stop;
    2) Free stop.
    Protective Function
    1)Open loop protection for external instantaneous stop terminals;
    2) Over-heat protection for soft starter;
    3) Protection for too long starting time;
    4) Input open phase protection;
    5) Output open phase protection;
    6) Unbalanced three-phase protection;
    7) starting over current protection;
    8) Running overload protection;
    9) Under voltage protection for power voltage;
    10) Over voltage protection for power voltage;
    11) Protection for fault parameter setting;
    12) Load short circuit protection;
    13) Auto restart or incorrect wiring protection;
    14) Incorrect wiring protection of external control stop terminals.
    Ambient StructurePlace to be usedIndoor location with good ventilation free from corrosive gas and conductive dust.
    AltitudeBelow 3000M. It have to rise the rate power when the altitude is more than 3000M.
    Ambient Temperature -30~+55ºC
    Ambient Humidity≤90%RH without dew condensation.
    Vibration<0.5G
    Protection ClassIP20
    Cooling PatternNatural wind cooling.
    Model Table

    Model No#Rated CurrentMaximum Adaptable Motor PowerCircuit BreakerMain Wiring Specifications
    (A)(KW)Model
    PQZR8-SZ11-T42211NXB-4010mm2Copper wire
    PQZR8-SZ15-T43015NXB-4010mm2Copper wire
    PQZR8-SZ18.5-T43718.5NXB-5010mm2Copper wire
    PQZR8-SZ22-T44522NXB-6316mm2Copper wire
    PQZR8-SZ30-T46030NXB-8025mm2Copper wire
    PQZR8-SZ37-T47637NXB-10035mm2Copper wire
    PQZR8-SZ45-T49045NXB-12535mm2Copper wire
    PQZR8-SZ55-T411255NXB-160S35mm2Copper wire
    PQZR8-SZ75-T415075NXB-180S50mm2Copper wire
    PQZR8-SZ90-T418093NXB-200S30×3Copper busbar
    PQZR8-SZ110-T4220110NXB-250S30×3Copper busbar
    PQZR8-SZ132-T4260132NXB-315S30×4Copper busbar
    PQZR8-SZ160-T4320160NXB-350H30×4Copper busbar
    PQZR8-SZ185-T4370185NXB-400H40×4Copper busbar
    PQZR8-SZ200-T4400200NXB-500S40×4Copper busbar
    PQZR8-SZ220-T4440220NXB-500H40×4Copper busbar
    PQZR8-SZ250-T4500250NXB-630S40×4Copper busbar
    PQZR8-SZ280-T4560280NXB-630H40×4Copper busbar
    PQZR8-SZ315-T4630315NXB-700H40×5Copper busbar
    PQZR8-SZ350-T4700350NXB-800H40×6Copper busbar
    PQZR8-SZ400-T4800400NXB-1000S40×6Copper busbar
    PQZR8-SZ450-T4900450NXB-1250S40×8Copper busbar
    PQZR8-SZ500-T41000500NXB-1600S40×8Copper busbar
    PQZR8-SZ630-T41200630NXB-2000S40×8Copper busbar
    Installation Dimension
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