6ES7331-7HF01-0AB0 Siemens Simatic S7-300 Analog I/O Module

Product parameters

Input channels: 8 analog input channels

Signal type (configurable) :

Voltage type: ±10V, ±5V, ±2.5V, ±1V, 0~10V, 0~5V (range optional)

Current type: 4~20mA, 0~20mA

Thermocouples: J, K, T, E, R, S, B, N types (with cold junction compensation function)

Thermal resistors: Pt100, Pt1000, Ni100, Ni1000, Cu100

Accuracy grade: ±0.05% full scale (25℃ ambient temperature, voltage/current signal); ±0.1% full scale

Resolution: 16-bit AD conversion

Sampling period: Minimum 10ms/8 channels (batch sampling), supporting individual triggering of sampling for each channel

Anti-interference performance: Complies with the EN 61000 electromagnetic compatibility standard and has built-in input filtering

Power supply requirement: DC 24V, power consumption approximately 3W

Operating temperature: 0℃ to 60℃

Installation method: DIN rail mounting

Protection grade: IP20

Communication method: Data is transmitted in real time with the CPU via the S7-300 backplane bus, without any external independent communication interface

Function

Multi-type signal acquisition: Compatible with mainstream industrial analog signals such as voltage, current, thermocouple, and thermal resistance, it can be directly connected to sensors for temperature, pressure, flow, liquid level, etc., and is suitable for complex acquisition scenarios

High-precision data conversion: 16-bit high resolution + low error accuracy, combined with channel isolation design, ensures the accuracy and stability of signal acquisition, meeting the strict requirements for parameter accuracy in industrial process control

Flexible configuration and wiring: Each channel's signal type, range, and filter parameters can be independently configured through the Step7 software. It supports multi-wire connection adaptation for thermal resistors without the need for hardware jumpers, making debugging convenient

Anti-interference and signal optimization: Built-in configurable digital filtering function, which can adjust the filtering time according to the on-site interference situation to suppress electromagnetic interference. The thermocouple signal is equipped with cold junction compensation, which enhances the accuracy of temperature measurement

Fault diagnosis function: It is equipped with diagnostic functions for power failure, channel signal over-range, sensor disconnection (thermal resistance/thermocouple), etc. Fault information is uploaded to the CPU in real time, and the module status indicator light visually displays the working status

Efficient batch sampling: Supports 8-channel batch sampling and individual channel trigger sampling, meeting the requirements of multi-parameter synchronous collection and precise monitoring of key channels

Application scenarios

Process industry data collection: Parameters such as reactor temperature/pressure, pipeline flow rate, and storage tank liquid level in the chemical, petrochemical, and pharmaceutical industries are collected to provide precise data support for PID closed-loop control

Manufacturing process monitoring: Collection of parameters such as equipment temperature, hydraulic pressure, and pneumatic pressure in the production of automotive parts and electronic components

Energy and power monitoring: Collection of electrical parameters such as voltage, current and power factor in power plants and substations, as well as monitoring of transformer temperature and cable temperature

Metallurgy and building Materials: Collection of blast furnace temperature and converter pressure in steel mills, as well as signal collection of kiln temperature and raw material ratio weight in cement plants

Environmental and municipal monitoring: Collection of water quality parameters from sewage treatment plants, and collection of pipeline temperature and pressure in urban heating systems

Equipment condition monitoring: Collecting the bearing temperature and vibration amplitude of rotating equipment such as fans, pumps, and compressors for equipment fault early warning

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