Top loading control system

Product description

High reliability

　　The AWZ series loading instrument adopts industrial grade products with mature technology and reliable performance. Its core controller adopts a programmable controller commonly used in the industry. The LCD display and keyboard input part adopts imported integrated LCD operation terminal, and the upper computer monitoring software adopts The mature industrial control configuration software makes this product have an absolute advantage unmatched by single-chip products in terms of advancement and reliability.

Multiple safety design

　　The grounding signal is automatically detected before and during the loading process, and the loading operation is prohibited if there is no safety grounding.

　　Multi-level operation authority is set, and parameter setting or operation can be performed only when the operation authority is satisfied.

　　With equipment self-diagnosis and alarm functions.

Flexible networking capabilities

　　The AWZ series loading instrument provides two communication options: Ethernet and RS485 network.

　　When using Ethernet, the communication protocol is the open Modbus TCP/IP protocol commonly used in process control, and the network communication rate is as high as 10Mbps, which is much higher than the ordinary RS485 network (600～115200 bps).

When using Ethernet, the communication protocol is the open Modbus TCP/IP protocol commonly used in process control, and the network communication rate is as high as 10Mbps, which is much higher than the ordinary RS485 network (600~115200 bps).

Flexible configuration

　　According to the buyer's needs, this series of loading devices can provide multiple options such as one machine (one loading device controls one loading arm position) and one machine with multiple positions (one loading device controls two or more loading arm positions).

Easy to maintain and use

　　System hardware adopts modular design, each module is easy to install and easy to maintain; software adopts graphical interface, easy to operate.

Remote and local operation modes

This loading instrument provides two operation modes: remote operation and local operation. When the operation mode is set to remote, it is only allowed to modify the working parameters on the remote management computer for loading operations; when the operation mode is set to local, it is allowed to modify the working parameters on the local loading instrument for loading At the same time, the working parameters and equipment status are simultaneously displayed on the remote management computer.

The functions are as follows:

　　Parameter setting function

　　The batch controller can set the loading parameters through the remote monitoring computer or the batch controller according to the needs of loading. These parameters include: flow coefficient, advance, valve opening delay time, fluid density, etc.

　　Quantitative loading control

　　After determining the working parameters of the batch controller, the batch controller will complete the automatic loading process according to the specified procedure, and automatically stop loading when the loading volume reaches the set value.

　　Grounding protection function

　　When it is detected that the system is not safety grounded, stop loading the vehicle.

　　Power failure protection function

　　When an unexpected power failure occurs during the loading process, the loading parameters can be saved, and the loading can be continued after the power is turned on.

Data collection function

　　The batch controller can collect flowmeter pulse signals or standard current signals, and can access thermal resistance temperature signals through the transmitter, and can also access switching signals such as electrostatic grounding clamps.

　　Continuous valve control function

　　The batch controller has PID adjustment output function, which can linearly and continuously control the opening degree of the on-site regulating valve, realize the functions of two-stage or multi-stage switch, constant current speed regulation, etc., to provide control effect and accuracy.

　　On-site emergency stop function

Both the batch controller and the remote monitoring screen are equipped with emergency stop buttons. If an emergency occurs on site during loading, the operator only needs to press the emergency stop button to immediately stop loading.

Remote and local real-time monitoring function

　　The batch controller is equipped with a high-brightness LCD display, which can display the loading process and the status of related equipment in real time when operating on site. During remote operation, the remote monitoring computer and the loading instrument can display the loading process and the status of related equipment in real time.

　　Remote/on-site loading mode conversion function

　　Generally, the truck is remotely loaded through the upper computer under normal conditions, or it can be directly loaded on site as needed. Each loading instrument in this system is a complete metering, control and display unit, independent of the upper computer.

　　Power supply function for field instruments

　　This batch controller also provides power output terminals to provide 24VDC and 220VAC power for field instruments such as flow meters and valves.

　　Communication network function

　　This batch controller is an open system with powerful communication and networking capabilities, and can be connected to the host computer and other systems in the form of Ethernet or RS485 network.

　　Equipment self-check function

The system automatically detects the working status of the batch controller, and the monitoring computer can remotely monitor the working status of the batch controller. When the batch controller fails, the system will automatically alarm.

Operation authority setting

　　This loading instrument can be set with a three-level six-digit operation password, which can be operated only when the password level is correct.

　　On-site printing function

　　This system comes with the printing function of the cumulative loading volume for each loading

Product feature

The hardware of the quantitative loading control instrument of this system is mainly composed of a micro PLC module, a liquid crystal operation panel (including operation keyboard) and other auxiliary equipment (terminals, power supply, explosion-proof box, etc.). Based on this hardware design and configuration, the whole device has many natural advantages with the traditional system consisting of single-chip integrated circuits.