PSTX840-600-70 ABB Soft Starter 840A 600V 450kW In-Line 800kW Delta

Product at a Glance

• PSTX840-600-70 – ABB softstarter for heavy motors
• Rated current: 840 A (in-line) / 1455 A (inside delta)
• Voltage range: 208…600 V AC, 50/60 Hz
• Control supply: 100…250 V AC or 24 V DC
• Built-in bypass saves energy and simplifies wiring
• Detachable graphic display (IP66, outdoor rated)

Key Technical Specifications

• Brand: ABB – PSTX series
• Model: PSTX840-600-70 (ID: 1SFA898119R7000)
• In-line power: 450 kW (400 V) · 600 kW (500 V)
• Inside-delta power: 800 kW (400 V) · 1000 kW (500 V)
• Starting capacity: 4×Ie for 10 seconds
• Current limit: 1.5…7.5×Ie
• Ramp time: 1…120 seconds
• Initial voltage: 10…99 V (adjustable)
• Analog outputs: 0‑10 V, 0‑20 mA, 4‑20 mA
• Communication: Modbus RTU/TCP, Profibus, Profinet, Ethernet/IP, DeviceNet, CANopen, EtherCAT, BACnet

Protection & Diagnostics

• Built-in electronic overload protection
• Earth fault, phase reversal, under/over voltage protection
• Locked rotor, current imbalance, and underload protection
• PT‑100 and PTC inputs for motor thermal monitoring
• Event log with real‑time clock
• LED indicators: Ready (green), Running (green), Protection (yellow), Fault (red)

Advanced Functions

• Torque control soft start/stop
• Kick start, pump cleaning, and emergency mode
• Jog (forward/reverse) with slow speed
• Dynamic brake and stand‑still brake
• Motor heating and pre‑start function
• Limp mode – two‑phase control if one thyristor fails
• Auto phase sequence detection and voltage sag detection

Environmental & Installation

• Operating temperature: -25…+60 °C
• Storage temperature: -40…+70 °C
• Protection degree: IP00 (main terminals)
• Main terminals: copper bars, torque 45 N·m
• Control terminals: rigid 2.5 mm²
• Dimensions: 435×493×369 mm · Weight: 46.5 kg

Certifications & Compliance

• CE, CCC, CQC, DNV certified
• RoHS II, REACH, TSCA compliant
• ETIM 9: EC000640 · eClass V11.0: 27370907
• WEEE category 5 (B2B)

Commissioning & Maintenance

• Full graphic display for easy setup – no PC needed
• Quick‑start wizard guides parameter configuration
• Fieldbus plug‑and‑play with optional ANYBUS modules
• Diagnostic menu shows thyristor runtime and event history
• All terminals are clearly marked for fast wiring

What’s Included

• PSTX840-600-70 softstarter unit
• Detachable graphic display (IP66)
• Mounting hardware and terminal bars
• Quick start guide and installation manual (digital)

Warranty & Delivery

• 12‑month warranty against material or workmanship defects
• Shipping: 12‑24 hours dispatch on business days
• Carriers: FedEx, UPS, DHL – express worldwide

Expert Review – Engineer’s Take

• “This softstarter handles 800 kW inside‑delta without breaking a sweat. The torque ramp and pump cleaning are lifesavers for water applications. Easy to commission via the graphic display.” – Senior Field Application Engineer

Manager’s Insight

• “PSTX840 offers the best price‑to‑power ratio in its class. The communication flexibility and built‑in bypass reduce panel complexity. A reliable choice for plant upgrades.” – Product Line Manager

Typical Applications

• Large centrifugal pumps and deep‑well pumps
• Heavy‑duty fans, blowers, and compressors
• Conveyors, crushers, and mills
• Mixers, extruders, and industrial agitators
• Emergency/fire pump systems

Frequently Asked Questions (FAQ)

• Q: What is the maximum starting current for this model?
  A: 4 times the rated current (4×840 A) for 10 seconds.
• Q: Can I use PSTX840 for inside‑delta connection?
  A: Yes. The switchable inside‑delta mode increases output to 1455 A.
• Q: Does it support Ethernet communication out of the box?
  A: It comes with Modbus RTU; optional ANYBUS modules add Profinet, Ethernet/IP, etc.
• Q: How do I monitor motor temperature?
  A: Connect PT‑100 or PTC sensors directly to the built‑in inputs.
• Q: What happens if the display fails?
  A: The unit continues to run with the last settings; you can replace the display without powering down.

Practical Field Tips

• Tip 1: For pump cleaning, set the ramp time to 5‑8 seconds to avoid water hammer.
• Tip 2: Use the torque control mode for conveyors – it reduces belt stress.
• Tip 3: Enable the emergency mode for fire pumps – it overrides all protections to keep the motor running.

Selection Guide – Choosing the Right PSTX

• Choose PSTX840-600-70 for motors up to 450 kW (in‑line) or 800 kW (inside‑delta).
• For lower currents, consider PSTX570 (570 A) or PSTX370 (370 A).
• Check ambient temperature: this model works from -25 °C to +60 °C.
• Ensure main circuit voltage matches 208…600 V AC, 50/60 Hz.
• Select the appropriate Fieldbus module for your PLC system.

Comparison with Similar Models

• PSTB370-600-70 – 370 A, 200 kW in‑line, built‑in bypass
• PSTX570-600-70 – 570 A, 315 kW in‑line, same advanced features
• PSTX1250-600-70 – 1250 A, 700 kW in‑line, for the largest motors

Ordering & Support

• Minimum order: 1 piece
• Customs tariff: 85371091
• EAN: 7320500510421
• For quotes or technical help:
• 📧 sales@powergearx.com
• 📞 +86 18030005825 (WhatsApp)

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