1SFA898111R7000 PSTX170-600-70 ABB Softstarter

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1SFA898111R7000 PSTX170-600-70 Softstarter

The softstarter PSTX170-600-70 has a rated maximum operational current of 170 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. 

Specifications of 1SFA898111R7000 PSTX170-600-70

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 Frequency:50 / 60 Hz
Rated Operational Power - In-Line Connection (Pe):(230 V) 45 kW
(400 V) 90 kW
(500 V) 110 kW
Rated Operational Current - In-Line Connection (Ie):170 A
Rated Operational Power - Inside Delta Connection:(230 V) 90 kW
(400 V) 160 kW
(500 V) 200 kW
Rated Operational Current - Inside Delta Connection:300 A
Overload Protection:Built-in electronic overload protection
Integrated Electronic Overload:Yes
Ramp Time:1 ... 120 s
Initial Voltage During Start:10 ... 99 %

FAQ of 1SFA898111R7000 PSTX170-600-70

Q:Can I use the same device for both 230 V and 600 V systems?
A:Yes. The Rated Operational Voltage is from 208 to 600 V AC. The device automatically adapts to the supply voltage within this range, but you must recalculate the power ratings accordingly (lower voltage = lower maximum power).
Q:Do I need an external overload relay?
A:No. The device has a built-in electronic overload protection. This feature eliminates the need for a separate thermal overload relay in the motor starter cabinet.
Q:What control voltages are required?
A:Control Supply (Us): 100 … 250 V AC — this powers the internal electronics.
Control Circuit (Uc): 24 V DC — this is typically for remote start/stop signals.

Technical Notes

Power scales with voltage (45 kW @ 230 V → 90 kW @ 400 V). Do not exceed 170 A regardless of voltage.
Power is higher (160 kW @ 400 V) because the soft starter sees only 58% of the line current. However, motor must have all 6 terminals accessible.
At 230 V inside delta, max power is 90 kW (current limited to 300 A). At 500 V inside delta, max power is 200 kW.