The softstarter PSTX720-600-70 has a rated maximum operational current of 720 A with an operating voltage span from 208...600 V AC. The rated control voltage is between 100...250 V AC at 50/60 Hz. PSTX features a three-phase control soft start and stop through a voltage or a torque ramp. It has built-in bypass for easy installation and energy saving. A RUN, TOR and Event signal is available from relay outputs in NO (normally open state). The PSTX has functions such as current limit, kickstart, analog output, EOL, motor heating and pump cleaning. PSTX also features features jog, braking, stand-still brake, diagnostics, sequence start and emergency/fire pump mode as standard.To interact with PSTX, it has a detachable full graphic display with IP66 and 4x outdoor rating. There are four ways to communicate with PSTX. It can be done by hardwire inputs Start/Stop/Reset of fault, and by three programmable digital inputs. Another popular option is the built-in Fieldbus communication Modbus RTU and incl optional ANYBUS modules with every major protocol such as for example Profinet, Profibus, Modbus TCP, Ethernet IP and others. Another way to communicate with PSTX is to use an external adaptor and a Fieldbus plug. PSTX is the complete alternative for any motor starting application. It’s suitable for medium to large-sized three-phase motors with nominal currents from 30...1250 A inline connection or 52...2160 A inside delta connection. Typical applications are, for example, pumps, fans, compressors, and conveyors.

Rated Operational Voltage: 208 ... 600 V AC
Rated Control Supply Voltage (Us): 100 ... 250 V AC
Rated Control Circuit Voltage (Uc): 24 V DC
Rated Frequency (f): 50/60 Hz · Main Circuit 50 / 60 Hz
Rated Operational Power - In-Line Connection (Pe): (230 V) 200 kW · (400 V) 400 kW · (500 V) 500 kW
Rated Operational Current - In-Line Connection (Ie): 720 A
Rated Operational Power - Inside Delta Connection: at 230 V 355 kW · at 400 V 710 kW · at 500 V 880 kW
Rated Operational Current - Inside Delta Connection: 1247 A
Service Factor Percentage: 100 %
Overload Protection: Built-in electronic overload protection
Integrated Electronic Overload: Yes
Starting Capacity at Maximum Rated Current Ie: 4xIe for 10s
Ramp Time: 1 ... 120 s
Initial Voltage During Start: 10 ... 99 %
Step Down Voltage Special Ramp: 100 ... 10 %
Current Limit Function: 1.5 ... 7.5 xle
Switch for Inside Delta Connection: Yes
Run Signal Relay: Yes
By-pass Signal Relay: Yes
Fault Signal Relay: Yes
Overload Signal Relay: Yes
Analog Outputs: 0…10 V, 0…20 mA, 4…20 mA
Signal Indication Ready to Start/Standby ON (LED): Green
Signal Indication Running R (LED): Green
Signal Indication Protection (LED): Yellow
Signal Indication Fault (LED): Red
Communication: Modbus-RTU; Modbus-TCP; Ethernet-IP; EtherCAT; DeviceNet; CANopen; Profibus; Profinet; BACnet-IP; BACnet-MSTP
Degree of Protection: acc. to IEC 60529, IEC 60947-1, EN 60529 Main Terminals IP00
Terminal Type: Main Circuit: Bars
Connecting Capacity Control Circuit: Rigid 1 x 2.5 mm²
Connecting Capacity Supply Circuit: Rigid 1 x 2.5
Tightening Torque: Main Circuit 45 N·m
Product Main Type: PSTX720
Function: Auto phase sequence detection · Automatic restart · Current limit · Current limit ramp · Dual current limit · Dynamic brake · Electricity metering · Electronic overload Time-to-cool · Emergency mode · Event log · Full voltage start · Jog with slow speed, forward and reverse · Keypad password · Kick start · Limp mode with two-phase motor control if one set of thyristors is shorted · Motor heating · Pre-start function · Pump cleaning · Real time clock · Sequence start · Soft start with torque control · Soft start with voltage ramp · Soft stop with torque control · Soft stop with voltage ramp · Stand still brake · Start reverse (external contactors) · Thyristor runtime measurement · Torque limit · Voltage sags detection
Protection Function: Bypass open protection; Current imbalance protection; Current underload protection; Dual overload (separate overload for start and run); Earth fault protection / ground fault protection; Electronic overload protection, EOL; Extension IO failure protection; Fieldbus failure protection; HMI failure protection; Locked rotor protection; Max number of starts/hour; Over voltage protection; Phase reversal protection; Power factor underload protection; PT-100 connection; PTC connection; Too long current limit protection; Too long start time protection; Under voltage protection; User defined protection; Voltage imbalance protection
Warning Details: Current imbalance warning; Current underload warning; Electronic overload Time-to-trip; EOL warning; Faulty fan warning; Locked rotor warning; Motor runtime limit warning; Over voltage warning; Phase loss warning (for standby); Power factor underload warning; Short circuit warning (for Limp mode); THD(U) - Total Harmonic Distortion warning; Thyristor overload warning (SCR); Under voltage warning; Voltage imbalance warning
Product Net Width: 435 mm
Product Net Height: 493 mm
Product Net Depth / Length: 369 mm
Product Net Weight: 46.5 kg