The manufacturer of air duct heaters introduced two control systems for electric heaters

The manufacturer of air duct heaters introduced two control systems for electric heaters

Air duct heater is a device that heats air. Due to its small size, high efficiency, and high heating temperature, it has been widely used. The air duct heater has two corresponding control systems.? It's okay if you don't know. Today, air heater manufacturers compared two different control systems for electric heaters.

The control system of electric heaters can be divided into two categories. One is the hybrid control mode, where the electric heater needs to be connected to the control system before control.

Relatively speaking, the system composition of this control mode is relatively complex, and the investment cost is relatively high. On the other hand, there are many conversion links in the output channel of the electric heater, especially after analog conversion, which leads to severe nonlinearity, poor anti-interference ability, and low control accuracy. In addition, the reliability of this control mode is relatively poor and prone to malfunctions.

The other is completely fragmented computer control. The control method of electric heaters is completely different. The output terminals of D/A conversion, voltage signal expansion, and power frequency high-voltage pulse signal conversion are all removed. The pulse signal of TTL level is directly used to control the on/off of solid-state relays, which are used to control the on/off of electric heaters, greatly simplifying the control process of electric heaters.

Not only that, it also overcomes the shortcomings of hybrid control mode and fully utilizes the advantages of computer technology, allowing electric heaters to not only greatly reduce costs but also greatly improve control accuracy. In addition, its anti-interference function and reliability have also been greatly guaranteed, which is the foundation for the safe and stable operation of the electric heater.

In addition, debugging is also required before use. The debugging steps for the air heater are to ensure that the outer shell of the air heater and the outer shell of the control cabinet are reliably grounded. Whether the power cord, output wiring, and thermal resistance wiring are correct, whether the insulation is good, and whether the components and fasteners of the control cabinet are loose. If there are any abnormalities, they should be dealt with promptly.

Turn on the power switch, turn on the air switch inside the control cabinet, the relevant indicator lights will light up, and the digital temperature controller will light up. Set high and low temperature values on the intelligent digital temperature controller. Start the electric heater, the heater starts working, and automatically controls according to the set temperature

The above is a comparison between two control systems. It can also be seen that computer control can effectively improve the drawbacks of hybrid control and greatly enhance usage efficiency. I believe you will understand after reading it. We also need to remind you that if the temperature is too high when using the electric heater, the control cabinet alarm will be powered off, and the electric heater will not work, but it can maintain a certain temperature for a short period of time. Pull the conversion switch and check if the three-phase voltage is balanced. The use of operational safety equipment is more important.

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