6ES7288-1SR20-0AA1 Siemens SIMATIC S7-200 SMART CPU SR20 CPU

Product parameters

Power supply parameters: Supports dual power input of AC/DC. AC input range: 85-264V (47-63Hz), DC input range: 77-138V. The maximum power consumption is 14W, the maximum output of the sensor power supply is 300mA (24V DC), and the maximum output of the backplane bus (5V DC) is 1.4A.

Storage parameters: 12KB program memory, 8KB user data memory, 10KB retention storage area; Supports microSDHC card expansion storage, equipped with a maintenance-free buffer circuit, real-time clock (RTC) buffer duration of 7 days, with a maximum daily deviation of 120 seconds at 25℃.

Computing performance: Typical processing time for bit operations is 150ns, for word operations 1.2μs, and for floating-point operations 3.6μs. Supports 6 high-speed counters (HSCS), including 4 single-phase 200kHz and 2 single-phase 30kHz, or 2 A/B phase 100kHz and 2 A/B phase 20kHz.

I/O parameters: 12 channels of on-board digital input (24V DC), 8 channels of relay output; The digital input signal "0" corresponds to ≤5V DC (1mA), the signal "1" corresponds to ≥15V DC (2.5mA), and the input delay is 0.2-12.8ms (parameterizable). The maximum output resistance load of the relay is 2A. The lighting load is 30W when DC and 200W when AC. The maximum switching frequency is 1Hz.

Interface parameters: 1 PROFINET industrial Ethernet interface (RJ45), supporting 10/100Mbit/s adaptive, can be used as an IO controller (up to 8 IO devices can be connected) or a smart device; It features 1 RS485 interface with a maximum transmission rate of 187.5Mbps, supporting S7 communication and PROFIBUS DP protocol (requiring a CM DP module).

Environmental and mechanical parameters: Operating temperature -20℃- 60℃ (horizontal installation), -20℃-50℃ (vertical installation), storage temperature -40 ℃-70℃. Relative humidity ≤95% (no condensation at 25℃), protection grade IP20; The external dimensions are 90mm×100mm×81mm, installed on rails, and the net weight is approximately 250g.

Anti-interference parameters: Compliant with IEC 61000-4 series standards, air discharge anti-static 8kV, contact discharge 4kV; The anti-interference capability for high-frequency electromagnetic fields is 10V/m (80-1000MHz).

Function

Logic control function: Supports programming languages such as ladder diagrams and function block diagrams, and realizes complex logical operations through flexible instruction sets. It can control basic automation processes such as the start and stop of production lines and equipment linkage. Equipped with 192 non-holding timers, 64 holding timers and 256 counters, it meets the requirements of timing control.

Process control function: Integrated with 8 PID closed-loop control loops, it supports continuous output, binary output, and automatic/manual mode switching. It can precisely adjust process parameters such as temperature, pressure, and flow rate, and is suitable for closed-loop control in scenarios such as chemical reaction tanks and food processing equipment.

Communication interaction function: IO controller/device mode communication is achieved through the PROFINET interface, with a minimum update time of 4ms. The RS485 interface supports S7 communication (as a server or client), can be networked with devices such as HMI, frequency converters, and sensors, and supports TCP/IP protocol and PROFIBUS DP network expansion (module required).

Expansion and debugging functions: Supports the expansion of 1 signal board and 6 signal modules, and can add analog I/O, special function modules, etc. Integrate the mandatory function and diagnostic function, and in combination with the STEP 7 Micro/WIN SMART programming software, it can quickly realize program download, parameter configuration and fault troubleshooting.

Application scenarios

Manufacturing automation: In scenarios such as automotive parts assembly lines and electronic processing centers, control the coordinated operation of conveyor belts, robotic arms, and processing equipment. Precisely locate the position of workpieces through high-speed counters to enhance production rhythm and processing accuracy. Support I/O signal interaction in the robot control system to achieve multi-device linkage.

Building automation: It is used for the start and stop control of air conditioning systems, elevator floor scheduling and public area lighting switching in office buildings, shopping malls and other buildings. Through the PROFINET interface, it is connected to the building monitoring platform to achieve remote status monitoring and parameter adjustment of equipment, reducing energy consumption.

Energy management: Compatible with scenarios such as factory power distribution systems and photovoltaic inverter monitoring, it collects data such as current and voltage (analog quantity modules need to be expanded), statistically analyzes energy consumption and generates reports. It can be linked with circuit breakers, frequency converters and other equipment to achieve load distribution and energy-saving control.

Food and beverage processing: Control the liquid level detection of filling equipment, the temperature adjustment of sealing machines, and the running speed of sterilization production lines. With anti-interference design, it can adapt to damp and dusty processing environments, ensuring stable production process parameters and meeting the hygiene and safety standards of the food industry.

Water treatment system: It is used for the start and stop of pumps, the opening and closing of valves, and the dosage control of dosing equipment in waterworks and sewage treatment plants. Through PID regulation, the matching relationship between the dosing amount and the influent flow rate is adjusted to achieve automatic compliance of water quality parameters and reduce manual intervention.

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