Overview; Description - ABB PSE 18 Installation And Commissioning Manual

L1 L2
M
Figure 3.1: Integrated By-pass. Controlled
phases 1 and 3 (L1 and L3).
Figure 3.2: Torque control is offered as standard
with the PSE softstarter.
16 Chapter 3 Softstarters Type PSE18...PSE370 Installation and commissioning manual 1SFC132057M0201
Chapter 3 Description
This chapter describes the PSE Softstarter in general, specifications as well as
available accessories and spare parts.
L3

3.1 Overview

The PSE Softstarter is a microprocessor-based softstarter designed with the latest
technology for soft starting and soft stopping of three-phase squirrel cage motors.
The softstarter has several advanced features as standard.
• Integrated by-pass in phases L1 and L3, see figure 3.1.
• Thyristors are used on phases L1 and L3 for controlling the motor voltage.
Phase L2 is directly connected to the motor, see figure 3.1.
• Select between voltage ramp or torque control during start and stop.
• Motor protection, as well as underload and locked rotor protection.
The keypad on the front is designed to be as user-friendly as possible, with a clear
display showing icons.
The PSE Softstarter can be controlled in two ways:
• Hardwire inputs control
• Fieldbus communication interface
Only one type of control method can be enabled simultaneously. Default selection
is hardwire inputs control.
The integrated fans for cooling are operated only during ramping (start/stop) and
when the temperature of the heat sink is high. The temperature is monitored by a
thermistor mounted on the heat sink.
Check that you have the correct product in regards to operational voltage, control
supply voltage and rated motor data. See chapter 3.3 Type designation.
The PSE18...PSE370 Softstarters operates over wide voltage ranges.
• Rated operational voltage 208 - 600 V AC
• Rated control supply voltage 100 - 250 V AC
Warning!
The product should only be used within the specified ratings.
Be aware of the ambient temperature and altitude above sea level. Derating
is required above 40 °C (104 °F) and above 1000 m (3281 ft).