ABB PST175 User Manual

Softstart
Upgrade to Torque control
PST30…300
PSTB370…1050
1SFC132040M0201 RevA Dec-06
Contents
1. ESD Warning...................................................................................................................2
2. Tools................................................................................................................................2
3. PCB information ..............................................................................................................2
4. Step by step.....................................................................................................................3
5. Configuration of the LV board..........................................................................................7

ABB PST175 Specifications

General

Brand	ABB
Model	PST175
Category	Controller
Language	English

Summary

ESD Warning

Tools and PCB Information

Required Tools for Upgrade

Lists the specific tools needed for the softstarter upgrade procedure.

PCB Version Requirements

Specifies the necessary LV and HV board versions for Torque Control upgrades.

Softstarter Upgrade - Step-by-Step

Disconnecting Old Components

Steps 1-10: Mark and disconnect cables, remove front cover, and uninstall old HV/LV boards.

Installing New LV Board

Steps 11-15: Install new LV board, connect display/keypad, and manage PSTB by-pass connections.

Installing New HV Board and CT Checks

Steps 16-21: Install new HV board, connect thyristor/fan cables, and verify current transformer connections.

Final Assembly and Cable Reconnection

Steps 22-23: Re-mount front cover and reconnect all external power and control cables.

LV Board Configuration for Torque Control

Initial Setup and Language Selection

Steps 1-4: Power on, navigate to Service Settings, confirm, and set the display language.

Parameter Configuration

Steps 5-9: Set CT Ratio Ir, Int ByPass, ByPass AC3, SOP parameters, and PST(B).

Post-Configuration Steps

Steps 10-12: Confirm programming, set motor current/protections, and consult further documentation.