Why does my ABB PSTX370 Controller motor make a bad sound during start?
This could be due to an incorrect motor connection. Examine and correct the wiring, and connect the control supply voltage, referring to the circuit diagram. Alternatively, the ramp time for the start might be incorrect. Try different ramp times to find the best setting.
What does it mean when my ABB PSTX370 Controller displays 'Ground fault'?
A ground fault indicates that the sum of the instantaneous line currents in your 3-phase system differs more than the specified value. Examine the motor cables and the motor itself for any issues.
What should I do if my ABB PSTX370 displays 'Locked rotor'?
Examine the bearings of the motor and the load to ensure they run easily. A damaged bearing or a load stock could be the cause.
What does it mean when my ABB Controller displays 'Overvoltage'?
An overvoltage error indicates that the main voltage is too high. Perform a check of the main voltage.
What does it mean when my ABB PSTX370 displays 'Under voltage'?
An undervoltage error indicates that the main voltage is too low. Perform a check of the main voltage.
What should I do if my ABB PSTX370 displays 'Heatsink overtemperature'?
Ensure that the fans are functioning correctly and that the airways are free from dirt and dust. Also, verify that the ambient temperature is not too high. If the fault persists after a reset, the heatsink is still too hot and needs to cool down.
What does 'Voltage imbalance' mean on my ABB Controller?
Voltage imbalance indicates that there is a voltage imbalance between the phases. Check the main voltage and restart the motor.
Why does my ABB PSTX370 display 'Too long start time'?
This indicates that the time taken to soft start the motor is longer than the set value. Check the starting conditions and current limit.
How do I fix an ABB PSTX370 Controller that shows a blank screen and no LED is active?
First, ensure that the supply voltage is properly connected, referring to the circuit diagram. Also check that the RJ45 plug is connected between the HMI and the softstarter, and that the RJ45 network cable is not damaged.
What to do if my ABB Controller motor is humming or starts without a given start signal?
This issue could be due to a few reasons. If it's a PSTX30...170 model, a bypass relay might be closed due to inaccurate handling. To resolve this, disconnect the operation voltage and the control supply voltage, remove the USB cable if connected, and then reconnect the voltage in the following sequence: first, the control supply voltage on terminals 1 and 2 (refer to chapter 5.1.2), wait 4 seconds, and then connect the operation voltage on terminals L1, L2, and L3. Alternatively, the bypass contactor/relay could be stuck in a closed position, or there might be a shorted thyristor. In either of these cases, it is best to speak to your ABB Sales Office.
General| Product Type | Softstarter |
|---|---|
| Rated Operational Current - In Line Connection | 370 A |
| Rated Operational Current - Inside Delta Connection | 640 A |
| Enclosure Rating | IP00 |
| Rated Frequency | 50/60 Hz |
| Overload Protection | Yes |
| Coasting Stop | Yes |
| Built-in Bypass Contactor | Yes |
| Degree of Protection | IP00 |
| Communication Options | Modbus RTU |
| Protection Features | Overload protection |
| Trip Class | 10 |
| Initial Voltage During Start | Adjustable 30-70% |
| Ramp Time | 30 s |
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