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Connecting the frequency converter part 11

Connecting the frequency converter part 11

Connecting the frequency converter for regulating pumps in tanks

The wiring diagram for connecting the frequency converter for regulating the performance of pumps in a tank is presented below:

  • Example of frequency converter wiring diagram
  • Another example of connecting a converter
  • Frequency converter connection diagram

Controlling the pump rotation speed

For effective control of the pump rotation speed, which operates with a storage capacity, it is necessary to perform the initial setup of the frequency converter according to the basic parameters.

Main regulation parameters

Parameters for connecting the frequency converter:

Parameter Code

Parameter Name

Parameter Value

3-02

Min Setpoint

[0] minimum rotation frequency setpoint

3-03

Max Setpoint

[50] maximum rotation frequency setpoint

3-15

Setpoint Source 1

[0] No function – not used (otherwise, the speed setpoint will be the sum of setpoints from sources 3-10, 3-15, and 3-16)

3-16*

Setpoint Source 2

[0] No function – not used (otherwise, the speed setpoint will be the sum of setpoints from sources 3-10, 3-15, and 3-16)

5-10

Digital Input Function (terminal 18)

[8] – Start – command to start (terminal 18)

5-15*

Digital Input Function (terminal 33)

[2] – Coast inverse – inverse coast (start command is ignored with no signal at terminal 27)

5-400

Relay Function 1

[2] Drive Ready – drive is ready for operation (green light indicates power supply to the converter)

5-12

Input Function 27

[17] Preset ref bit 1 – setpoint bit 1 (speed selection when T2 and T1 are closed)

5-13*

Input Function 29

[18] Preset ref bit 2 – bit 2 for speed selection

5-11*

Input Function 19

[16] Preset ref bit 0 – bit 0 for speed selection

3-101*

Fixed Speed 1

[0] Speed in % of 3-03 – stop upon activation of sensor 1

3-102*

Fixed Speed 2

[60] Speed in % of 3-03 – optimal speed for activating sensor 2

3-103

Fixed Speed 3

[90] Speed in % of 3-03 – fast ramp speed when sensor 3 is activated

3-104

Fixed Speed 4

[100] Speed in % of 3-03 – maximum speed for activating sensor 4

* Make sure to enter/check the values of these parameters, as they may differ from factory settings.

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