Controls motor acceleration and deceleration while reducing electrical inrush and mechanical stress, then transfers the running motor to the internal bypass path.
- Signal or energy path: The softstarter evaluates motor-current and control inputs, regulates the power-semiconductor firing sequence during starting or stopping, and reports operating and protection status to the control system.
- Companion components: Coordinate the unit with the three-phase motor, feeder protection, contactor arrangement, control supply and any approved communication option.
- Engineering check: Select the connection method, motor-current setting, start duty and ramp or torque profile from the actual motor and driven load.
- System boundary: The softstarter manages motor starting and stopping but does not replace feeder short-circuit protection or the machine safety circuit.
Industrial application,pumps, fans, compressors, conveyors, crushers and other industrial motor-driven equipment.
Important Notice: Verify the complete PSTX170-600-70 1SFA898111R7000 nameplate, installed-system documentation, companion hardware and current ABB instructions before installation or replacement.
Apter Power PSTX170-600-70 1SFA898111R7000 Manuals and Guides
Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.
Pump systems
Torque control soft-starts and soft-stops pumps, underload protection can detect dry running, and the documented pump-cleaning function can reverse flow to clear pipes.
Fans and high-inertia loads
Controlled voltage/current during start reduces inrush, while dynamic and standstill braking functions support appropriately engineered fan applications.
Conveyors and material handling
Adjustable acceleration, current limiting and slow-speed jog in both directions support commissioning and controlled movement of compatible conveyor loads.
Compressors and general industrial motors
Soft starting and built-in protection reduce electrical and mechanical starting stress when the PSTX is selected to the motor current, duty and start frequency.
Read and follow the current ABB documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1
Installation, commissioning and service must follow the current ABB PSTX manual and be carried out by personnel qualified for the connected power system.
2
Verify the exact 600 V order code, motor nameplate current, system voltage, in-line or inside-delta wiring, duty class, starts per hour and load inertia before selection.
3
For heavy-duty or complex starts, high starting-current limits, long acceleration times or more frequent starts, use ABB's selection method or proSoft rather than copying a catalog power value.
4
Derate rated current by 0.8% per deg C above 40 deg C up to 60 deg C, and apply ABB's altitude derating above 1000 m up to 4000 m.
5
For the PSTX142...170 frame, ABB lists a 508 x 508 x 305 mm minimum IEC enclosure size; maintain the required clearances and cooling airflow.
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