6ES7331-7KF02-0AB0 Siemens Simatic S7-300 Analog I/O Module

Product parameters

Module type: Analog Input Module (AI module)

Number of input channels: 8 single-ended inputs or 4 differential inputs

Input signal types: Supports voltage signals (0-10V, ±10V) and current signals (0-20mA, 4-20mA)

Resolution: 13 bits (voltage signal); 12 bits + sign bits (current signal)

Conversion time: Up to 250μs per channel

Input impedance: Voltage input: ≥100kΩ; Current input: ≤250Ω

Accuracy grade: When the ambient temperature is 0-60℃, the error is ≤±0.1% of the full scale (FS)

Power supply: Power is drawn from the S7-300 backplane bus

Isolation feature: Electrical isolation between the channel and the backplane bus; There is no isolation between the channels

Operating temperature: 0-60℃

Storage temperature: -40-85℃

Relative humidity: 5-95%

Protection grade: IP20

Compatible system: Supports S7-300 series PLC, and requires programming with STEP 7 software

Function

Multi-type analog signal acquisition: It can be directly connected to the voltage and current type sensor signals in industrial sites to achieve indirect acquisition of non-electrical physical quantities.

High resolution and fast conversion: The 12-13-bit resolution ensures the accuracy of signal acquisition, and the conversion speed of 250μs per channel meets the real-time requirements of most industrial scenarios, enabling a rapid response to changes in on-site parameters.

Flexible input mode switching: Through the hardware jumpers on the module, single-ended input or differential input can be selected according to the on-site interference situation.

Electrical isolation protection: The isolation design between the channel and the bus effectively suppresses electromagnetic interference (EMI) and surge voltage in industrial sites, protects the PLC host and module themselves, and enhances system stability.

Compatible with Siemens ecosystem: Seamlessly integrated into the S7-300PLC system, supports parameter configuration in STEP 7 software, no additional driver required, plug and play.

Status diagnosis: The LED indicator lights (power light, operation light) on the module can visually display the working status of the module, facilitating fault detection.

Application scenarios

Process control industry: Monitoring of production processes in industries such as chemical engineering, pharmaceuticals, and food processing, such as collecting parameters like the pressure of reaction vessels, the flow rate of pipeline media, and solution temperature, to achieve closed-loop control of the production process.

Manufacturing automation production lines: automotive manufacturing, mechanical processing, electronic assembly lines, etc., such as collecting position feedback signals of manipulators, speed signals of conveyor belts, cutting force signals of machine tools, etc., for equipment motion control and production accuracy adjustment.

Energy and power industry: Auxiliary system monitoring for power plants and substations, such as collecting the cooling water temperature, oil pressure, and transformer oil temperature of generator sets, to ensure the stable operation of energy equipment.

In the building materials and metallurgy industry: Process parameter collection for cement production lines and steel mills, such as collecting kiln temperature, material level (4-20mA signal from material level sensors), fan wind pressure, etc., to achieve automated control of production processes.

Water treatment industry: Monitoring of water quality and operation parameters in waterworks and sewage treatment plants, such as collecting pH values of sewage, liquid levels in water tanks, and outlet pressures of water pumps, to support the automatic control of the water treatment process.

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