How to adjust the excitation voltage of 590C digital DC governor

Excitation debugging: Continental 590C controls the power supply, first change the excitation control mode to voltage control (the default is voltage control), and start the voltage ratio from a small one, generally from 20%; After confirming that the excitation line and the armature wire are connected correctly, the control terminal wire is wired correctly, and the speed given potentiometer is reduced to zero, the closing starts 590, and the excitation voltage will be added to the motor excitation coil with a voltage of 380V 20%=76V, at this time, the voltage ratio is slowly increased, until it is 90% of the excitation rated voltage of the motor, for example, the rated excitation voltage is 180V is increased to about 40%, and the voltage can be seen from the universal meter is very stable and slowly increases 380V 40%=152V, The voltage display is smooth and does not run in the middle, indicating that everything is normal. After normal, the opening stop 590, adjust the voltage ratio to the ratio corresponding to the rated excitation voltage, change the excitation control mode to current control, and adjust the current to the rated current of the excitation.

Close and start 590 again, you can see that the excitation current is slowly added to the rated current, from the diagnosis, the excitation current is given and the excitation current feedback is not different, and the excitation trigger angle changes within 1-2 angles, indicating that the excitation current control is normal. Complete the excitation debugging, and the opening stop 590. Save the parameters.

In the excitation menu, select the control mode as voltage mode, and then there is a voltage ratio below, which is the ratio of the output voltage to 380 volts, and the general motor excitation voltage is 180 volts, so you can set it to meet most of the requirements.

The excitation voltage is generally increased according to the requirements of the motor, and the excitation voltage is lowered and the motor speed is accelerated, but the output power of the motor is reduced, and the characteristics are soft, as long as the speed is in the rated range of the motor, it has no impact on the motor.

In the excitation control, the voltage control is selected to automatically prohibit the weak field start, and only when the current control mode is selected and the weak field start is selected, the motor can start the weak field at high speed. Voltage feedback is to measure the excitation terminal voltage as the feedback quantity to control the excitation terminal voltage, through which the excitation terminal voltage can be constant, but not the constant current, so the excitation magnetic field can not be constant, and the control of the motor is not very ideal. In the 590, if the excitation control mode is selected as "Voltage Control", the excitation and weak magnetic start will be automatically locked by the system and will not start.

Parameter Field Control Control Mode Voltage Control

Voltage ratio

Generally, the current control method is adopted.

I haven't used this model, (the general debugging steps of the Continental 590C DC governor) go to the webpage to see.

In the operation of the 590C DC governor, the current can be viewed by installing an ammeter, or the current can be viewed through the display panel of the DC governor itself. Specifically, you can follow the steps below to check the current:

Find the "Display" button on the DC governor panel and press it.

The panel displays various parameters, and you can find the relevant parameters such as "Output Current" or "Motor Current" so that you can see the magnitude of the current.

If you need to see the current more accurately, you can use a professional tool such as a digital multimeter to measure the liquid current, or you can pass the pulse current signal to another system such as a PLC for monitoring.

It should be noted that it is important to follow the relevant safety regulations during operation, and if necessary, please turn off all power supplies to avoid accidental injury.

1. Use electrical test instruments such as multimeter or ammeter, connect the positive and negative poles of the test instrument to the positive and negative poles of the DC governor power supply respectively, and the current measurement gear of the test instrument should be greater than the rated current of the motor, generally choosing 20A or higher.

2. Observe the current value on the test instrument, you can check the current size when the motor is running on the high stool, and you can also check the current size by selling the LED display screen or monitoring software of the DC governor.

To measure the armature current of the 590 DC governor through an oscilloscope, you can follow these steps:

1.First, make sure that your oscilloscope is properly connected to the circuit. Connect the ground of the oscilloscope's probe to the common point of the circuit, and then connect the oscilloscope's channel 1 probe to the armature electrical pure current measurement point.

2.Select the appropriate settings on the oscilloscope. Select the DC-coupled mode and set the oscilloscope's time reference to the appropriate range so that you can observe the current waveform. Noji.

3.Adjust the vertical and horizontal zoom of the oscilloscope so that you can clearly see the current waveform.

4.Start the 590 DC governor and run the situation you want to measure the current.

5.Observe the current waveform displayed on the oscilloscope. Depending on the oscilloscope's scale and measurement range, you can estimate the magnitude and variation of the current.

Please note that using an oscilloscope to measure current requires care and proper safety practices. Make sure that the circuit and the oscilloscope are properly connected and avoid any damage or short circuit to the circuit.

Oscilloscope current probes are expensive!