Ladder diagram of sequential start and stop of conveyor belt Explanation: This program uses a timer (T) as the control element for delayed start and stop. The program is as follows: Component introduction: X0 is the emergency stop button X1, X2, X3 are thermal relays for three motors X4 is the start button X5 is the stop button Y1, Y2, Y3 are motor contactors Program description: 1. When the emergency stop and thermal relay are in the on state, the M0 auxiliary relay is powered on. 2. Press the start button X4 to turn on the signal, and the Y1 relay is powered on. Simultaneously connect T1 and T2. 3. When the delay time of T1 expires, the Y2 relay is powered on. 4. When the delay time of T2 expires, Y3 relay is powered on. At this point, the sequential start-up of the three electric motors is completed. 5. When the stop button X5 is pressed, the signal is...

1.1 Communication through OPC S7-200 PC Access OPC communication between S7-200 and WinCC can be established using the OPC server PC Access of S7-200. SIMATIC NET OPC Server A connection between S7-200 and WinCC can be established using the OPC server of SIMATIC NET. 1.2 Communication using PROFIBUS DP Connecting through PROFIBUS DP is a relatively fast communication method. In order to communicate using PROFIBUS DP, the S7-200 communication module EM277 is required. This document mainly provides a detailed introduction to this method. How to communicate Profibus DP between WinCC and 200PLC through EM277 2.1 Network Configuration CP5611 serves as the main station, EM277 serves as a standard master-slave network for the slave station, as shown in Figure 1. 2.2 Hardware and softwa...

ABB frequency converters are widely used, and various malfunctions are inevitable during use. There are generally two methods for handling ABB frequency converter faults (similar to other frequency converter faults): fault code analysis method and main circuit analysis method. 1. Fault code analysis method If the ABB frequency converter has a fault, there are corresponding fault codes on the operation panel. Generally, when dealing with frequency converter faults, it is necessary to find its fault code on the operation panel and conduct a deeper analysis based on the fault code. Based on my personal experience in frequency converter maintenance and some common fault codes, I will briefly discuss some common fault handling methods. 1.1 Fault code: BRAKEFLT Reason for malfunction: Brake failure, brake opening timeout or brake not opening properly. Solution: Open...

Dynamic parameter adjustment steps:Step 1 Set system rigidity (Fn 001)Kp :  Position circuit proportional gain (recommended value for machine Kp is 30-90 c)Kv :  Proportional gain of speed circuit (recommended Kv value for machine tool 30-120 Hz)Ti :  Integral gain of speed loop (recommended value for machine tool Ti is 10-30 ms)Example: Choose different rigidity based on the size of the machine tool (Fn001 is recommended to be set to 5 for 1-meter machining centers)Rigid (Fn001) Kp (Pn102) Kv (Pn100) Ti (Pn101) Torque filtering (Pn401)Low 3 30 30 3000 130Medium low 4 40 2000 100Medium high 5 60 1500 70High 6 85 85 1000 50 Step 2 Auto turning to find the inertia ratio between the motor and the machine toolThe purpose of automatic coordination is mainly to calculate the dynamic parameters that may be affected after the integration of the mo...

power input Equipped with three-phase AC power input terminals, used to connect the power input to the frequency converter. According to different power standards and load requirements, different power wiring methods can be selected, such as star wiring or delta wiring. motor output Used to connect the motor to the frequency converter and achieve speed control of the motor. The motor output terminals are usually composed of three-phase output terminals, corresponding to the three-phase inputs of the motor. By adjusting the output frequency and voltage through a frequency converter, the motor speed can be precisely controlled. SPEED FEEDBACK Used to receive feedback signals of motor speed to achieve closed-loop control. By comparing the speed feedback signal with the set target speed, the frequency converter can automatically adjust the output frequency and voltage t...

The sensor adopts 0-10V three wire voltage signal, of which the terminals are 10, 5 and 4. It sends the signal to the frequency converter to control the speed of the motor and realize stable uncoiling and paying off. The uncoiler has negative effect and the winder has positive effect. The frequency converter model is fr-a740-2.2k Equipment parameters Parameter number name set up Remarks PR79 Operation mode 2 External control mode PR1 Upper limit frequency 50   PR2 Lower limit frequency 0   PR3 Reference frequency 50 Set the frequency of the rated torque of the motor PR7 Acceleration time 1   PR8 Deceleration time 1   PR9 Electronic overcurrent protection 0   PR0 Increase starting torque 6% It can be adjusted without adjustment. It can be adjusted when the load is large PR125 Change the maximum value of potentiometer 52 Maxi...

challenge Meet safety standards and improve productivity to enter new markets Solution Guardmaster 440C-CR30- Monitor and guard the interlock switches on the safety gates and emergency stop buttons on the machine, and send real-time messages to the human-machine interface (HMI)Kinetix 5500 EtherNet/IP Servo Driver - Supports integrated motion control on EtherNet/IP through Studio 5000 software1769 CompactLogix 5370 Controller - Supports EtherNet/IP Integrated Motion ControlPanelView Plus 7 graphic terminal - built-in Ethernet port to connect machines to enterprise environmentsKinetix TL-Series Servo Motors achievement Capacity increased from 70% to 95%Productivity increased by approximately 30%Reduce debugging time by about 60%   Taiwan Pulp and Plastic Mold Company, with world leading research and development capabilities and mark...

Thanks to flexible automation platforms, biopharmaceutical OEMs can now use one-time use technology (SUT) to achieve intelligent and miniaturized production, and then rapidly expand production scale. In the past decade, modular factories and single use technology (SUT) have rapidly developed and been widely applied in the biopharmaceutical industry. Data shows that over 85% of biopharmaceutical manufacturers rely on SUT for trial commercial scale production, followed by rapid commercial production. Leading biopharmaceutical OEM manufacturers are fully aware of the challenges and opportunities in today's market. Undoubtedly, the market's demand for equipment agility is increasing. These devices not only need to meet the needs of new modular factories and support small batch production, but also need to be easily expandable to meet the requirements of commercial produc...