ABB PSTB470-600-70 Softstarter for Motor Control Applications

Overview of the ABB PSTB470-600-70 Softstarter

Engineers choose the ABB PSTB470-600-70 for demanding motor starting applications.
This 1SFA894016R7000 model handles main circuits from 208 to 600 V AC.
The PSTB470-600-70 delivers a rated operational current of 470 A for in-line connection.
For the control supply, it accepts 100 to 250 V AC at 50/60 Hz.
In addition, you can also use 24 V DC for the control circuit voltage.
Finally, this softstarter provides built-in electronic overload protection.

Technical Specifications of the PSTB470-600-70 Softstarter

Below are the complete technical parameters for this softstarter.

Power Ratings and Motor Sizing

The ABB PSTB470-600-70 provides substantial power handling capabilities.
For in-line connection, the power rating reaches 250 kW at 400 V.
Similarly, at 500 V, the in-line power rating increases to 315 kW.
Turning to inside delta connection, the performance improves significantly.
At 400 V, this connection method supports a 450 kW motor.
Likewise, at 500 V, the inside delta power rating reaches 600 kW.
Consequently, the inside delta current rating rises to 814 A.
Therefore, the PSTB470-600-70 can control much larger motors using inside delta wiring.

Control and Starting Parameters

Users can configure the ABB PSTB470-600-70 with various starting parameters.
For example, the ramp time adjusts from 0 to 120 seconds.
The initial voltage during start is also configurable between 30% and 70%.
Another key setting is the step down voltage, which ranges from 100% down to 30%.
In addition, the current limit function can be set from 1.5 to 7 times Ie.
As a result, the PSTB470-600-70 provides flexible starting profiles for different loads.
Operators can select between ramp or current limit starting methods.
Thus, the softstarter handles demanding applications with high inertia loads.

Protection Features and Diagnostics

The PSTB470-600-70 includes comprehensive built-in protection circuits.
Its integrated electronic overload protection monitors motor current continuously.
Furthermore, the softstarter provides an overload signal relay for external indication.
A dedicated fault signal relay activates immediately when any protection trips.
Three LED indicators show ready, protection, and fault states clearly.
For instance, a green LED signals ready to start or standby ON.
A yellow LED indicates that a protection function is active.
Finally, a red LED warns of any fault condition detected.

Relay Outputs and Analog Outputs

The ABB PSTB470-600-70 includes multiple relay outputs for system integration.

In addition, the unit offers several analog output options.
Users can select 0 to 10 V, 0 to 20 mA, or 4 to 20 mA signals.
Consequently, these outputs allow easy connection to PLCs and monitoring systems.

Communication and Fieldbus

The PSTB470-600-70 supports fieldbus communication via a standard FieldBusPlug.
This FieldBusPlug accepts various optional communication modules.
For example, you can add Profibus, DeviceNet, Modbus, or Ethernet/IP modules.
Thus, this flexibility allows integration with almost any automation system.
In addition, the ABB PSTB470-600-70 communicates all status and diagnostic data.
Therefore, remote control and monitoring are possible through the chosen fieldbus.

Terminal Connections and Wiring

The PSTB470-600-70 uses different terminal types for each circuit purpose.

Main circuit terminals:

• Type: Bars

• Hole diameter: 10.5 mm

• Width and thickness: 25 x 6 mm

• Tightening torque: 35 Nm

Control circuit connections:

• Rigid wire: 1 x 2.5 mm²

• Two rigid wires: 2 x 1.5 mm²

• Tightening torque: 0.5 Nm

Supply circuit connections:

• Rigid wire: 1 x 2.5 mm²

• Tightening torque: 0.5 Nm

Notably, the ABB PSTB470-600-70 main terminals carry an IP00 protection rating.

Dimensions and Mechanical Specifications

The PSTB470-600-70 has a substantial form factor suitable for high power levels.
Its net width measures 366 mm for standard industrial cabinet mounting.
The net height reaches 460 mm, while the net depth is 361 mm.
Despite its compact design for this power range, the unit weighs 31 kg.
In comparison, the package level 1 gross weight reaches 40 kg including packaging.
The package dimensions are 440 mm (W) x 550 mm (D) x 440 mm (H).

Environmental and Operating Conditions

The ABB PSTB470-600-70 operates reliably in standard industrial environments.

The PSTB470-600-70 also complies fully with RoHS requirements.
In addition, a Conflict Minerals Reporting Template (CMRT) is available upon request.

Installation Guidelines for the PSTB470-600-70

Follow these steps for correct installation of the ABB PSTB470-600-70.

1. Mount the softstarter vertically on a non-combustible surface.

2. Ensure adequate clearance for ventilation around the unit.

3. Connect main circuit wires to the bars using 35 Nm torque.

4. Connect control circuit wires with 0.5 Nm tightening torque.

5. Apply 100-250 V AC to the control supply terminals.

6. Configure starting parameters using the potentiometers.

7. Set current limit between 1.5 and 7 x Ie for your motor.

8. Test starting performance and adjust ramp time as needed.

Only qualified electrical technicians should install this softstarter.

Package Contents for the ABB PSTB470-600-70

• One ABB PSTB470-600-70 softstarter unit

• Main terminal bars pre-installed on the unit

• Control terminal connectors for wiring

• Installation and commissioning manual

• Mounting template for cabinet layout

Common FAQs About This ABB PSTB470-600-70 Softstarter

Q1: What is the difference between in-line and inside delta connection?
A1: In-line connection on PSTB470-600-70 passes full motor current through the softstarter. Inside delta connection places the softstarter inside the motor winding, reducing current by 1.73 times.

Q2: Can the PSTB470-600-70 operate at 600V AC?
A2: Yes, the ABB PSTB470-600-70 is rated for main circuits up to 600 V AC. The rated operational voltage range is 208 to 600 V AC.

Q3: Does this softstarter have built-in overload protection?
A3: Yes, the PSTB470-600-70 includes integrated electronic overload protection. You do not need an external overload relay for motor protection.

Q4: What is the starting capacity of this softstarter?
A4: The ABB PSTB470-600-70 handles 3 times Ie for 15 seconds. This provides sufficient starting torque for most industrial motors.

Q5: Is communication fieldbus included with the softstarter?
A5: The PSTB470-600-70 comes with FieldBusPlug standard. You must order the specific fieldbus module separately for your protocol.

Typical Applications for the ABB PSTB470-600-70

The ABB PSTB470-600-70 excels in heavy-duty motor starting applications.
You can use it for pumps, fans, and compressors in industrial plants.
The softstarter works well for conveyors, crushers, and mills.
It is suitable for HVAC systems requiring reduced voltage starting.
The PSTB470-600-70 provides reliable starting for high inertia loads.

Ordering and Logistics Information

This ABB PSTB470-600-70 ships from our global distribution center.
We use original factory packaging for this heavy-duty softstarter.
Contact our team for volume pricing on ABB PSTB series products.
Always verify your motor power and voltage before ordering.
Express shipping options are available for urgent installation needs.