ABB REF542plus-1VCR007346-G0012 Automation terminal

ABB REF542plus-1VCR007346-G0012 Automation terminal

The start and stop of the controller are of one key type, with manual and automatic control modes, and can be switched freely.
2. The screen display contents include: current temperature, air throttle opening, target value display, fault self diagnosis, etc.
3. Under the manual control state, the fan, oil pump, large throttle, small throttle, large damper, small damper, electric ignition, solenoid valve and other equipment can be independently controlled.
4. The temperature control can ensure that it is within ± 3 ℃ of the target value, and has overtemperature alarm protection measures (the alarm temperature can be freely set by the user).
5. The controller is equipped with a computer communication interface, which can be connected with the asphalt mixer.
6. The controller includes temperature, flame and other sensors and their detection systems.
Description of controller selection:
According to the above requirements, the hybrid PLC (EASY-M0808R-A0404NB) of Kewei Company is selected as the fuel burning controller in terms of cost, performance, continuous process improvement and necessary property rights protection.
The hybrid PLC combines the processing of switching value and analog value in the same PLC, which can well realize logic control and process control. It has irreplaceable advantages for the control occasions with both switching value and analog value. Therefore, EASY-M0808R-A0404NB can well meet the process requirements in the control process of oil burner.
The hybrid universal programmable controller has all the functions of PLC. The user’s process can be programmed with ladder diagram language, and the programming software is compatible with Mitsubishi FX2N programming software. Its functional features are as follows:
1. 4-way analog signal input, signal type 0-60mV, 12 digit numerical value counting.
2. 4-channel analog signal output, signal type 0-20 mA, 12 bit numerical value counting.
3. 8-point switching value input
4. 8-point switching output
5. It has ladder diagram programming interface and can be connected to computer or human-machine interface.
6. It supports CANBUS and RS485 networks and can be used as the master station or slave station of CAN network or RS485.
7. Match with remote module Easy FT to realize remote data access

PLC is a device used for automatic control in industrial production. Generally speaking, it can be used directly in industrial environments without taking any measures. However, despite the high reliability and strong anti-interference ability mentioned above, when the production environment is too harsh, electromagnetic interference is particularly strong, or installation and use is not appropriate, it may lead to program errors or operational errors, resulting in incorrect input and output, leading to equipment loss of control and misoperation, to ensure the normal operation of the PLC. In order to improve the reliability of PLC control systems, on the one hand, PLC manufacturers are required to improve the anti-interference ability of the equipment; On the other hand, it is necessary to attach great importance to design, installation, use, and maintenance. Multi party cooperation can improve the problem-solving ability and effectively improve the anti-interference performance of the system.

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