ABB PSTX1050-600-70 Advanced Soft Starter with Graphic Display

The ABB PSTX1050-600-70 is a premium soft starter for demanding motor control applications. This unit combines high current capacity with advanced communication and a user-friendly interface. It features a detachable full graphic display with an IP66 rating for versatile mounting. The PSTX1050-600-70 offers extensive built-in protection and multiple control ramps for optimal performance.

Core Product Identification

• Brand: ABB
• Order Code: PSTX1050-600-70
• Global Alias / Product ID: PSTX1050-600-70 / 1SFA898120R7000
• EAN: 7320500510445
• Product Line: PSTX Advanced Softstarter Series
• Rated Operational Current (Ie): 1050 A (In-Line)
• Rated Power at 400V (In-Line): 560 kW
• Rated Power at 500V (In-Line): 730 kW
• Main Voltage Range: 208 ... 600 V AC
• Control Supply Voltage (Us): 100 ... 250 V AC, 50/60 Hz
• Control Circuit Voltage (Uc): 24 V DC

Key Performance & Starting Specifications

• Starting Capacity: 4 x Ie (4200A) for 10 seconds
• Ramp Time Adjustment: 1 to 120 seconds
• Initial Start Voltage: Adjustable from 10% to 99%
• Current Limit Function: Adjustable from 1.5xIe to 7.5xIe
• Step Down Voltage (Special Ramp): 100% down to 10%
• Service Factor: 100%
• Inside Delta Connection: Supported (Rated Current: 1810 A)
• Inside Delta Power at 400V: 1000 kW
• UL/CSA Horsepower Rating (480V): 900 Hp

Advanced Features & User Interface

• Detachable Display: Full Graphic, IP66 & 4x Outdoor Rated
• Control Ramps: Voltage Ramp, Torque Ramp, Current Limit Ramp
• Special Modes: Kick Start, Pump Clean, Dynamic Brake, Jog, Emergency/Fire Pump Mode
• Energy Saving: Built-in Bypass Contactor Function
• Auto Functions: Phase Sequence Detection, Automatic Restart
• Monitoring: Electricity Metering, Event Log, Motor Heating Calculation

Comprehensive Protection & Monitoring

• Primary Protection: Built-in Electronic Overload (EOL) with Time-to-Cool
• Electrical Protection: Phase Loss, Current/Voltage Imbalance, Earth Fault, Over/Under Voltage
• Motor Protection: Locked Rotor, Dual Overload (Separate Start/Run), PTC/PT-100 Inputs
• System Protection: Fieldbus Failure, HMI Failure, Extension I/O Failure, Too Long Start Time
• Status LEDs: Green (Ready, Running), Yellow (Protection), Red (Fault)
• Relay Outputs: RUN, TOR, Event, Fault, Overload, Bypass Signal
• Analog Output: Configurable 0-10V / 0-20mA / 4-20mA

Communication & Connectivity

• Built-in Communication: Modbus RTU (Serial)
• Optional ANYBUS Modules: Profinet, Profibus, Modbus TCP, Ethernet/IP, EtherCAT, DeviceNet, CANopen, BACnet
• Hardwired Control: Start/Stop/Reset Inputs + 3 Programmable Digital Inputs
• Communication Port: For external adapter and Fieldbus plug

Electrical Connections & Physical Data

• Main Circuit Terminals: Copper Bars (IP00 protection)
• Main Circuit Tightening Torque: 45 N·m (398.3 lb-in UL/CSA)
• Control Circuit Connection: Rigid 1 x 2.5 mm²
• Supply Circuit Connection: Rigid 1 x 2.5 mm²
• Unit Dimensions (H x W x D): 515 x 435 x 367 mm
• Net Weight: 62.3 kg

Environmental & Operational Ratings

• Operating Temperature: -25°C to +60°C
• Storage Temperature: -40°C to +70°C
• Degree of Protection (Display): IP66 (Detachable HMI)
• Degree of Protection (Main Terminals): IP00 (Requires panel enclosure)

Installation & Commissioning Guide

• Mount the main unit vertically in a clean, ventilated control cabinet.
• Install the detachable IP66 display on the cabinet door or nearby wall.
• Connect main power using appropriate copper busbars (40x6 mm typical).
• Apply the correct 45 N·m torque to all main terminal screws.
• Connect control supply, 24V DC, and hardwired control signals as required.
• Select the motor connection method (In-Line or Inside Delta) before power-up.
• Use the graphic display or software to configure motor parameters and protection settings.

Packaging & Shipping Details

• Package Contents: 1 x PSTX1050-600-70 Soft Starter, 1 x Detachable Display, Documentation
• Package Dimensions (L x W x H): 616 x 600 x 800 mm
• Gross Shipping Weight: 74.3 kg
• Shipping EAN: 7320500510445
• Shipping Methods: Freight service via FedEx, UPS, or DHL for oversized cargo.
• MOQ (Minimum Order Quantity): 1 piece

Certifications & Warranty

• Key Certifications: CE, CCC (China), DNV
• Material Compliance: RoHS II, REACH, TSCA, CMRT
• WEEE Category: B2B, Large Equipment (Category 4)
• Warranty Period: 12 months standard warranty from delivery.
• The warranty covers defects in materials and workmanship under normal operating conditions.

Frequently Asked Questions (FAQ)

• What is the advantage of the detachable IP66 display?

It allows you to mount the display outside the control panel in harsh environments (dust, water jets) for easy operator access while keeping the main electronics protected inside the cabinet.

• How does the built-in bypass save energy?

After the motor reaches full speed, internal bypass contacts close, shunting current around the thyristors. This eliminates heat loss in the semiconductors, improving efficiency and reducing cooling needs.

• Can I connect temperature sensors directly to this soft starter?

Yes, it has inputs for both PTC thermistors and PT-100 RTD sensors, providing direct motor winding temperature monitoring and protection without needing an external module.

• What is the "Emergency/Fire Pump Mode"?

This critical mode overrides all fault trips (except major hardware failures) to ensure the pump starts and runs continuously during an emergency, even with phase loss or other alarms active.

• Do I need an extra module for network communication?

For Modbus RTU (serial), no—it's built-in. For Ethernet protocols (Profinet, Modbus TCP, etc.), you need to add the corresponding optional ANYBUS communication module to the dedicated slot.

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