How to solve the undercurrent of ABB DC governor exciter?

Inverter is an important AC drive speed regulation equipment commonly used in industry. Therefore, in order to ensure its stable and reliable operation, reasonable use and maintenance are particularly important. This paper lists several common fault phenomena, cause analysis and maintenance examples of ABB ACS800 series inverters in use.

1 Overview. ABB is a well-known brand in Europe and even the world, high and low voltage inverters, high and low voltage electrical appliances, transformers, motors, power generation equipment, etc. are its mature products, and are widely used in power plants, chemical industry, papermaking, metallurgy and other industries. It should be said that ABB's products have been unanimously recognized by the majority of users in China.

ABB drives occupy an important position in the inverter market due to their stable performance, rich option expansion functions, flexible programming environment, good torque characteristics, and a wide range of series that can be used in different applications. The market performance of ABB inverters in China is obvious to all. With its strong brand effect and high social awareness, ABB inverter ranks in the forefront of China's inverter market.

2. Common fault phenomena, cause analysis and treatment methods.

With the extensive use of ABB inverter in all walks of life in China, many problems will inevitably be encountered in use, and the following are several maintenance examples of ABB ACS800 inverter for the reference of the majority of users.

DCS400 DC governor is a product of ABB Group, and the product name given by the manufacturer is thyristor converter DC drive system. It is also widely used in the field of DC speed regulation in China, almost on par with the Eurofins 590 DC speed controller, and is a highly intelligent DC speed regulation device controlled by a microcontroller.

The whole circuit (three-phase full control bridge, excitation output circuit) is composed of three circuit boards, namely the CPU motherboard, the power driver board, and the excitation trigger board. The failure rate of the power supply driver board and the excitation trigger board is the highest, and the circuit schematic diagram of these two circuit boards has been mapped and mapped out according to the needs of maintenance, 1. The circuit principle analysis of the DCS400 DC governor power supply drive board.

DCS400 DC governor power supply The driver board includes the armature main circuit, the excitation output circuit, the switching power supply circuit, and the final trigger circuit.

The magnetic field voltage reaches its limit.

If the magnetic field voltage reaches the parameter.

field volt nom (

and the magnetic field current is not yet there.

When the set value is reached, this alarm is activated.

Please check the impedance and temperature of the magnetic field.

DC governor, exciter, undercurrent, that is, the voltage is not enough, to reset a use environment.

If the DC governor exciter undercurrents, this should be his current is relatively small, you only need to increase its current and then increase it to solve the problem.

Its DC governor, and then its current is in the process of solving, you can stop it first, and then give a small current after the weather, and then test it first, and then give a large current if it doesn't work.

If he owes a lot of current, then you still have to deal with it according to the rotation.

In this case, it is recommended that you can change to a larger power supply, and you can change to a larger power supply, and this problem can be solved.

The solution to the undercurrent of this governor is to increase the voltage.

If your governor is undercurrent, I recommend that you charge it.

DC governor, in this case, then you can go and buy a new one, in this case, it can't be repaired, there is no way, this thing.

If you want to solve this kind of undercurrent, you must have a charger to give him enough power.

The ABB DC governor is embedded from the gear.