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Electric fish silicon controlled easy burst tube and what is the cause of the error?
The common errors in the use of electric fish are as follows: 1. State error; 2. Hardware error; 3. System error; 4. Line error; 5. Power supply error. As a common fish catcher accessories, the quality of its convergence function directly affects the size of the output effect of the fish catcher and the up and down of the pulse frequency. This paper summarizes the common situations that can not be used by electric fish products caused by thyristor's own questions, and presents you with the most comprehensive treatment plan for fish catcher thyristor questions.
First of all, we should carefully understand what are the reasons for the common shortcomings of the electric fish? State shortcomings: DC over/long voltage, DC over current, AC over current, under voltage maintenance, frequency bias is too large, grounding shortcomings, lack of phase and so on. Hardware shortcomings: current board shortcomings, trigger board shortcomings, IGBT shortcomings, pulse motor shortcomings, etc. System shortcomings: Watchdog shortcomings, abnormal system parameters, clock shortcomings, etc. Communication shortcomings: TIMEOUT, OVERRUN, etc. Disadvantages of power supply: alarm when the control power supply is too high/too low.
Next, let's analyze the question of SCR in detail: the fish catcher operation panel has no appearance: firstly, the control voltage and 12V frequency adjustment voltage of SCR should be measured. if it is zero, SCR operation is normal, otherwise SCR connection products with higher quality need to be replaced. Secondly, measure whether the main silicon controlled resistor of the fish catcher is normal. Data cannot be measured when the electronic fish catcher enters the line: no defects were found when checking the defects records of the electric fish catcher circuit, there is no doubt about the operation of the buttons on the operation panel. Check that the LED indicator lights on the A20 main board and A23 power supply board in the electric fish trap are normal. Use a test pen to measure the incoming power supply of the fish trap. It is found that one phase is abnormal. The results of measuring the three phases with a multimeter are: VAB = 370V, VAC = 185V, VBC = 185V. After checking, the contact at the SCR row of the incoming line is poor.
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