Installation - ABB PSTX Series Installation And Commissioning Manual

This chapter gives a description of the Softstarter in
general, specifications and available components and
spare parts.
3.1 Overview
The PSTX Softstarter has the latest technology for
soft start and soft stop of squirrel cage motors. The
Softstarter has multiple advanced motor protection
features as standard.
WARNING
3
If using the Rated Operational Voltage U
/N) as source for Control Supply Voltage U
sure to not exceed U
Bypass
Softstarter range PSTX30...1250 have integrated bypass
components.
User interface
The keypad on the front has Navigation keys, Selection
soft keys, Start and Stop keys, Local or Remote key,
Information key and a clear information screen. You can
select 15 user languages.
You can control the Softstarter in 3 different ways:
• Hardwire inputs control
• Keypad control (either attached to the Softstarter front
or detached and connected with the cable included)
• Fieldbus communication interface (by built in Modbus,
Anybus module or the FieldBus Plug with adapter)
You can use only one type of control at the same time.
Default selection is hardwire inputs control.
INFORMATION
Keypad control has the highest priority and
overrides all other control methods.
Fans
The integrated fans for cooling will run for 3 min
after each ramp (start/stop) and when the heatsink
temperature is too hot.
For PSTX1050...1250 the fans will run continuously in
TOR. A thermistor monitors the temperature.
18 Description | Installation and commissioning manual |
(Phase
e
make
s
250V AC,50/60Hz.
s
1SFC132081M0201
3.1.1 Operation functions
Available functions are listed below:
• Voltage start ramp
• Voltage stop ramp
• Torque start ramp
• Torque stop ramp
• Full voltage start
• No ramp
• Stand-still brake
• Current limit
• Kick start
• Slow speed
• Motor heating
• Sequence start
• Automatic restart
3.1.2 Protection functions
The PSTX Softstarter has protection functions to
protect the Softstarter, motor and other equipment. All
protections can have automatic reset or manual reset.
You can enable or disable the protection.
Available protections are listed below:
• EOL protection
• Locked rotor protection
• Phase reversal protection
• Current imbalance protection
• Overvoltage protection
• Under voltage protection
• Ground fault protection
• Voltage imbalance protection
• Voltage outputs protection
• External thermal sensor - PT100 protection
• External thermal sensor - PTC protection
• Power factor underload protection
• Current underload protection
• User defined protection
• Too long current limit protection
• Bypass open protection
• Fieldbus failure protection
• Extension IO failure protection
• HMI failure protection
• Max number of starts