ABB PSTX105 User Manual

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Softstarters Type PSTX30...PSTX570

User Manual short form

1SFC132082M9901

Other manuals for ABB PSTX105

Installation And Commissioning Manual188 pages

Questions and Answers:

A
Alexander StephensonAug 22, 2025
What causes an electronic overload in my ABB PSTX105 Controller and how can I resolve it?
- W
  Wanda JohnsonAug 23, 2025
  An electronic overload occurs when the motor current is too high for an extended period, often due to a high load on the motor shaft. To resolve this: * Examine start conditions and EOL settings. * Correct the reason for the overload. * Ensure the current limit level is not set too low. * Verify the ramp time for start is not too long. * Confirm the correct overload class is used. * Check that the Setting Ie parameter is correct.
M
Mariah JonesSep 1, 2025
How to troubleshoot phase loss in ABB PSTX105 Controller?
- J
  Jeffrey AlvarezSep 1, 2025
  Check that the mains are connected and that no line contactor or breaker is open. Inspect the fuses for all 3 phases, replacing any that are blown. Verify the operation network supply and correct it if there's a power loss on one or multiple phases. Ensure the contactor/breaker or external switch device is closed. If the line contactor opens too quickly at stop, control it with the Run signal relay on terminal 4, adding a time relay before the contactor opens. If Stop Ramp is not necessary, set Stop mode to direct stop.
T
Travis WaltersAug 30, 2025
What to do if my ABB PSTX105 Controller motor does not start when given a start command by the hardwire inputs?
- M
  Matthew MyersAug 31, 2025
  First, check the connections for start and stop. Make sure that the start and stop commands are not given at the same time. Ensure that the keypad is not in Local Control mode; if it is, push the R\L-key to change to Remote Control mode. Also, verify that the Fieldbus control parameter is set to No. Finally, reset any active or tripping events.
D
Debbie YoungAug 29, 2025
What does 'Thyristor overload' mean on my ABB PSTX105 Controller?
- G
  George WoodardAug 30, 2025
  A thyristor overload indicates that the thyristors are too hot. Check the start conditions and the fans. If possible, decrease the current limit. Allow the temperature of the thyristors to decrease before restarting.
B
Benjamin Johnson Jr.Aug 28, 2025
What should I do if my ABB Controller displays 'Heatsink overtemperature'?
- E
  Eric WagnerAug 28, 2025
  Ensure that the fans are functioning correctly and that the airways are free from dirt and dust. Also, verify that the ambient temperature is not too high. If the fault persists after a reset, the heatsink is still too hot and needs to cool down.
B
barry93Aug 27, 2025
What does it mean when my ABB Controller displays 'Under voltage'?
- C
  Claudia StewartAug 27, 2025
  An undervoltage error indicates that the main voltage is too low. Perform a check of the main voltage.
D
David KingAug 26, 2025
What does it mean when my ABB Controller displays 'Overvoltage'?
- J
  Jerry ReedAug 27, 2025
  An overvoltage error indicates that the main voltage is too high. Perform a check of the main voltage.
E
eparkerAug 25, 2025
What should I do if my ABB PSTX105 displays 'Locked rotor'?
- J
  Jennifer DavilaAug 26, 2025
  Examine the bearings of the motor and the load to ensure they run easily. A damaged bearing or a load stock could be the cause.
C
courtneykelleyAug 25, 2025
What does it mean when my ABB PSTX105 Controller displays 'Ground fault'?
- M
  Michael YoungAug 25, 2025
  A ground fault indicates that the sum of the instantaneous line currents in your 3-phase system differs more than the specified value. Examine the motor cables and the motor itself for any issues.

ABB PSTX105 Specifications

General

Type	Softstarter
Rated Current	105 A
Protection Class	IP20
Starting Capacity at Rated Voltage - Ie	105 A
Rated Impulse Withstand Voltage (Uimp)	6 kV
Rated Insulation Voltage (Ui)	690 V
Number of Poles	3
Connecting Cable Area	16-70 mm²
Output Current	105 A
Power Rating	Up to 55 kW at 400 V
Output Voltage	208-690 V AC
Operating Temperature Range	-25°C to +60°C
Rated Operational Voltage	208-690 V AC

Summary

Important Safety and Setup Information

ABB PSTX Softstarter Description

PSTX Softstarter Mounting Guide

PSTX Softstarter Electrical Connection

Built-in Modbus RTU Communication

Interface for RS485 communication for control and parameter management.

PTC/PT100 Temperature Sensor Input

Input terminals for PTC and PT100 temperature sensors.

Analogue Output Signal

Configurable output signal for current or voltage measurement.

PSTX Softstarter HMI Overview

PSTX Softstarter Configuration Settings

First Start-up Procedure

Initial configuration wizard for the softstarter's basic setup.

Assistants Menu for Configuration

Step-by-step wizard for initial configuration tasks.

Navigation Overview and Key Functions

Explanation of the softstarter's keys and menu navigation.

Parameter List and Settings

Guide to accessing and setting operational parameters.

Options Settings and Sub-menus

Details on selectable sub-menus for advanced settings.

PSTX Softstarter Troubleshooting Guide

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