How to Troubleshoot Electrical Control System of Self Loading Cement Mixer

When the electrical control system of the self loading cement mixer is in operation, mechanical failure of the system is likely to occur due to the aging of the electrical wire insulation or and poor contact, which brings major hidden dangers to the its operation. Therefore, it is necessary to determine the exact location of the mechanical failure in order to deal with the mechanical failure as soon as possible.

Mechanical fault location refers to judging the specific location of the mechanical fault based on various information generated during the operation of the electrical control system under certain working conditions, finding the location of the mechanical fault and the cause and and detecting the electrical control system.

Mechanical fault location is divided into two parts: judging the type of mechanical fault and determining where the fault occurs. Considering the structural characteristics of the electrical control system, the self mixing concrete truck is composed of multiple components, and each component is connected to each other, so the faults are spreading.

When the sensor device recognizes the fault information, the location of the fault cannot be immediately determined, so it is necessary to locate the fault to avoid the phenomenon of incorrect judgment of the fault location.

Confirm the fault type and realize the fault location

When the switch is turned on, the normal operation of self mixing concrete truck can be ensured. If the self loading concrete mixer stops running, the relay will not detect the signal. At this time, it is necessary to consider whether the safety circuit is malfunctioning, so the operation of the self loading mixer can be judged according to the working status of the relay.

The interlock circuit of the switch system is faulty. To ensure that all switches in the electrical control system are in a closed state to operate, install an electrical interlock switch on each switch.

Faults caused by various components such as contactors and relays. When a large current impacts the coil of the contactor and the relay, it is easy to cause the coil to burn out and cause the electrical circuit controlled by the contactor and the relay to lose control and stop moving.

If the coil is intact and the electrical contacts are burned out, it will cause a short circuit in the circuit, or the electrical contacts may be burned out due to dust entering the system. At this time, electrical circuit failures are prone to occur.

The malfunction caused by electromagnetic interference is the decrease in the performance of the electrical control system and the transmission channel caused by the electromagnetic. Once the self loading cement truck is subjected to electromagnetic interference, the self mixing concrete truck will stop working immediately.

To solve this kind of failure, it is necessary to ensure that the wiring distance of the electrical control system is short enough, and do not lay it together with high-voltage and high-frequency power lines.

Determining the type of mechanical failure that occurs in the electrical control system of the self loading cement mixer, and calculating the distance of the mechanical failure point according to the mechanical fault location theory help to make sure the type of failure, and realize the mechanical fault location of the electrical control system of the self mixing concrete truck.

Original Source: https://www.self-loading-mixer.com/a/how-to-troubleshoot-electrical-control-system-of-self-loading-cement-mixer.html

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