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Drive Technology FAQ

All questions that apply to the field of drive technology are assigned to this category.

  1. ST500 | Display parameters d0.09 and d0.10

    The display parameters d0.09 and d0.10 can display two different ranges, namely 0-10 and 0-20. The display switching is done via the […]
  2. ST600s | Connection of a temperature sensor

    P00.01 1 Terminal control active P05.04 57 S4 = Error input, motor temperature too high P06.03 50 Relay output RO1 = AI/AO […]
  3. ST600s | Single-phase motor

    Frequency converters are designed for operation with a three-phase motor. These are asynchronous or synchronous motors. They load the three phases symmetrically. […]
  4. ST600s | Limit starting current e.g. for fan motors

    To keep the starting current lower, there are different V/f characteristics. The different characteristics are to be selected under P04.00. For fans […]
  5. ST600s | Change start and stop ramp

    The start and stop ramps can be set separately on an ST600. A higher start ramp reduces the inrush current and can […]
  6. ST600s | Several motors on one frequency inverter

    Can several motors be operated on only one frequency inverter? Yes, this is possible if the following rules are observed: The motors […]
  7. ST600s | Forward, reverse, stop with switches or buttons

    The ST600 frequency inverters have terminals S1 – S4, HDIA and HDIB with which the inverters can be switched to forward and […]
  8. ST600s | Digital inputs – What can be connected and how?

    The digital inputs of the ST600 frequency inverter enable the inverter to be controlled by means of sensors, switches, a PLC, etc.. […]
  9. ST600s | External potentiometer – How to connect it and which one is compatible?

    All potentiometers with a resistance of 1kΩ to 5kΩ and a power of 2W are suitable for connection as external potentiometers to […]
  10. ST600s | Whistling noises from the engine – What can I do?

    If the motor makes whistling noises or tends to vibrate when using a frequency inverter, this may be related to the carrier […]
  11. ST600s | Initial commissioning – What do I have to consider (motor data)?

    Before commissioning a frequency inverter, it is essential to load the factory settings via the menu. Afterwards, the rated motor data of […]
  12. ST500 | Change start and stop ramp

    The start and stop ramps can be set separately on an ST500. A higher starting time reduces the inrush current and can […]
  13. ST500 | Several motors on one frequency converter

    Can several motors be operated on only one frequency inverter? Yes, this is possible if the following rules are met: The motors […]
  14. ST500 | Digital inputs – What can be connected and how?

    The digital inputs of the ST500 frequency inverter allow the inverter to be controlled by means of sensors, switches, a PLC etc. […]
  15. ST500 | Whistling noises from the engine – What can I do?

    If the motor makes whistling noises or tends to vibrate when using a frequency converter, this may be related to the carrier […]
  16. ST600s | Frequency converter as pump control – Parameter list for pressure control

    Note: Unchanged factory settings (except motor parameters) are assumed. Programmed values: Parameter Value Functional description P00.01 1 Terminal control active P00.06 7 […]
  17. ST130 | Whistling noises from the engine – What can I do?

    If the motor makes whistling noises or tends to vibrate when using a frequency converter, this may be due to the carrier […]
  18. ST130 | Is it possible to operate a three-phase asynchronous motor on the single-phase mains under speed control?

    Yes, this works wonderfully with the Sourcetronic frequency converters ST130. 3 x 230 volts are output at the frequency converter (so the […]
  19. ST130 | When should I use an EMI output filter with my frequency inverter?

    The frequency inverters have unfiltered outputs. For the majority of applications this provides satisfactory performance, but for a small number of applications […]
  20. ST130 | Several motors on one frequency inverter

    Can several motors be operated on only one frequency inverter? Yes, this is possible if the following rules are observed: The motors […]
  21. ST130 | Multiple Speeds

    With the multiple speed setting you can store up to 16 different frequencies and recall them at any time via a binary […]
  22. ST130 | Display Settings

    If you do not want the frequency to be shown in your display, but a different technical value, this is also possible. […]
  23. ST130 | Power supply and motor. Where are these connected?

    The inverter has a flap in the upper area. This must first be opened. L and N of the power supply (230V) […]
  24. ST130 | Acceleration- Braking time – How do I set this?

    To adjust the start ramp/stop ramp of the ST130 inverter, the following parameters must be set: F0.05 Length of the start ramp […]
  25. ST130 | Change introduction to operation using the target frequency

    To change the target frequency from F0.08 = 50.00Hz (factory setting) to e.g. F0.08 = 25.00Hz, proceed as follows In monitoring mode […]
  26. ST130 | For an emergency stop button I need a free stop – What do I have to do?

    The ST130 frequency inverter has the terminals DI1, DI2 and DI3 with which the inverter can be switched to a free stop […]
  27. ST130 | Parameter transfer to the control panel – What do I have to do?

    To transfer all parameters stored in the frequency inverter to the memory location of the control unit, proceed as follows: Go to […]
  28. ST130 | Warning light 230 V e.g. fault case – How to connect?

    A warning lamp with 230 V must be supplied externally. The warning lamp and the frequency converter are then connected in series. […]
  29. ST130 | Operation with minimum frequency – What do I have to do?

    Should the motor continue to run at a certain minimum frequency? Set F0.11 (lower frequency limit) between 0 Hz and the set […]
  30. ST130 | Power Class – Which model do I need?

    As a rule, the power class of the inverter should correspond to that of the motor. In the case of heavy starting […]
  31. ST130 | Initial commissioning – What do I have to observe (motor data)?

    Before commissioning a frequency inverter, it is essential that the factory settings are loaded y0.00 = 1. Then the rated motor data […]
  32. ST130 | Factory settings – How do I reset the inverter?

    To reset the ST130 frequency inverters to their factory settings, parameter y0.00 = 1 must be set. With 1, all parameters are […]
  33. ST130 | Forward, Reverse, Stop – Which parameters and terminal assignment?

    The ST130 frequency inverters have terminals DI1, DI2 and DI3 with which the inverters can be switched to forward and reverse operation […]
  34. ST130 | External Potentiometer – How is it connected and which is compatible?

    As external potentiometer, which is connected to the terminals AI1, +10V and GND, all with a resistor of 1kΩ and a power […]
  35. ST130 | Digital inputs – What can be connected and how?

    The digital inputs of the ST130 enable the inverter to be controlled by means of sensors, switches, a PLC etc. The terminals […]
  36. ST130 | Analog sensors – How are they connected and parameterized?

    There is a wide range of sensors (e.g. pressure sensors, flow, temperature, …) that output their measurement results in the form of […]
  37. ST500 | Power: Motor – Frequency converter

    Question: Can a 5.5kW motor be operated with a 7.5kW inverter? Yes, a 5.5 kW motor can be operated with a 7.5 […]
  38. ST500 | When should I use an EMC output filter with my frequency inverter?

    The AC drives have unfiltered outputs. For the majority of applications this gives satisfactory performance, however for a small number of applications […]
  39. ST500 | Operation with minimum frequency – What do I have to do?

    Should the motor continue to run at a certain minimum frequency? Set F0.23 (frequency lower limit) between 0 Hz and the set […]
  40. ST500 | How do I commission the ST500 frequency inverter?

    To parameterize the frequency inverter ST500, you can follow the following flow chart (click on the picture for a higher resolution):   […]
  41. ST500 | Analog output signals – for example, for motor voltage, motor current, motor power

    With the inverter ST500, it is possible to display 15 different measured variables via the terminals DA1 and DA2, one for each […]
  42. ST500 | Braking and acceleration times

    With ST500 frequency inverter it is possible to retrieve various functions via the terminals DI1 to DI8. One of them is to […]
  43. ST500 | Limit starting current e.g. for fan motors

    To keep the starting current low, there are various F / V characteristics. The different characteristics must be chosen using F4.00. For […]
  44. ST500 | Introduction to Operating: By Changing the Target Frequency

    To change the target frequency of F0.19 = 50.00Hz (the default factory setting) to e.g. F0.19 = 250.00Hz, proceed as follows: In […]
  45. ST500 | DC braking to hold engine into position

    With the ST500 frequency inverter, it is possible to vary the braking behaviour with a superimposed DC braking voltage, so as to […]
  46. ST500 | External Potentiometer – How to connect it and which one is compatible?

    An external potentiometer, which is connected to AI1, +10V and GND will have a resistance of 1kΩ and a power of 2W. For […]
  47. ST500 | Initial operation – What should I watch for (motor data)?

    Before a initial operation of a frequency inverter you should absolutely check that the factory settings are loaded y0.00 = 3. Then the […]
  48. ST500 | Power Class – Which Model Do I Need?

    Normally, the power class of the inverter should be the same as the motor’s. With heavy-duty starting motors however, it may be […]
  49. ST500 | Minimum Frequency for External Potentiometer

    To have the external potentiometer during operation with minimun frequency in the left hand position, the parameters have to be adjusted. On […]
  50. ST500 | Activate Panel Potentiometer – Control Motor Frequency via Dial

    The frequency inverter ST500 has a potentiometer on the panel, which can be used to adjust the motor frequency. For this purpose […]