The ABB PSTX37-600-70 is a high-performance all-intelligent soft starter engineered for precise control of three-phase induction motors in industrial applications. As a flagship model in ABB’s PSTX series, it integrates advanced microprocessor technology and power electronics to deliver smooth, step-less motor startup/shutdown, effectively reducing electrical and mechanical stress on motors and connected equipment (e.g., pumps, fans, conveyors). With built-in protection functions and flexible communication options, this soft starter balances energy efficiency, operational safety, and ease of integration—making it ideal for automation systems in water treatment, HVAC, manufacturing, and process industries.
- Step-Less Startup/Shutdown: Uses voltage ramp and current limit control to eliminate inrush current (typically 6-8x rated current for direct-on-line starting), reducing mechanical shock to gears, belts, and couplings. This extends the lifespan of motors and driven equipment by up to 30%.
- Adjustable Kickstart: Provides a short burst of higher voltage (0.1-10 seconds) to overcome static friction in high-inertia loads (e.g., centrifugal pumps, large fans), ensuring reliable startup without stalling.
- Soft Stop Function: Gradually reduces voltage to prevent water hammer in pump systems or load sloshing in conveyors, minimizing pipeline damage and operational disruptions.
- Multi-Layered Safeguards: Integrates overcurrent, overload, and phase loss protection to shut down the soft starter in abnormal conditions (e.g., motor jamming, wiring errors). The PTC input enables direct monitoring of motor winding temperature, preventing overheating.
- Voltage Fluctuation Resistance: Compensates for input voltage variations (±10%), ensuring stable performance even in unstable power grids common in industrial settings.
- Diagnostic Alerts: LED indicators and fault codes (displayed on the integrated keypad) provide real-time status updates, enabling quick identification of issues (e.g., undervoltage, phase imbalance) and reducing troubleshooting time.
- Reduced Energy Consumption: By limiting starting current and optimizing motor voltage during light loads, the PSTX37-600-70 cuts energy usage by up to 15% compared to direct-on-line starters—especially impactful for motors running at partial load (e.g., variable-speed fans in HVAC systems).
- Lower Maintenance Costs: Minimized mechanical stress on equipment reduces the frequency of repairs and replacements for motors, bearings, and driven machinery.
- Built-In Communication: Modbus RTU support enables seamless integration with PLCs, HMIs, or SCADA systems for remote monitoring and control (e.g., adjusting startup parameters or resetting faults from a central control room).
- Intuitive Operation: The integrated keypad and digital display allow on-site configuration of parameters (e.g., current limit, ramp time) without additional software. ABB’s free Soft Starter Assistant software is available for advanced programming and data logging via a PC.
- Compact Design: The IP20 open frame model fits into space-constrained control cabinets, while optional IP54 kits extend usability to dusty or damp environments (e.g., outdoor pump stations).
The ABB PSTX37-600-70 is widely used in industrial and commercial motor control applications, including:
- Water & Wastewater: Centrifugal pumps, submersible pumps, and aeration blowers (prevents water hammer and reduces pipe stress).
- HVAC Systems: Air handling units (AHUs), centrifugal fans, and chilled water pumps (optimizes energy use and reduces noise during startup).
- Manufacturing: Conveyors, compressors, and machine tool spindles (minimizes mechanical wear on production line equipment).
- Mining & Construction: Crushers, mixers, and ventilation fans (handles high-inertia loads and harsh environmental conditions).
- Condition: New original ABB product (100% authentic, with factory certification and serial number traceability).
- Warranty: 24-month standard warranty covering manufacturing defects (excludes damage from improper voltage, overcurrent, or physical impact).
- Technical Support: Access to ABB’s global technical database, including installation manuals, wiring diagrams, and application notes. Our team provides remote assistance for parameter setup, system integration, and troubleshooting.
- Packaging: Industrial-grade cardboard packaging with anti-static protection to ensure product integrity during shipping.
For help selecting the right soft starter for your motor (e.g., verifying compatibility with specific motor ratings) or guidance on integrating with PROFINET/EtherNet/IP networks, contact our technical support team for personalized solutions.
