6ES7338-4BC01-0AB0 Siemens Simatic S7-300 Signal Module

Product parameters

Core specifications: 4 differential analog input channels (independently isolated design), compatible with the backplane bus of S7-300 PLC, supporting single-ended/differential wiring switching

Supported voltage signals: ±10V, ±5V, ±2.5V, 0-10V, 0-5V

Current signal: 4-20mA, 0-20mA (external power supply required); The measurement range can be configured through software

Accuracy and sampling rate: Resolution 16 bits (including sign bits)

Sampling rate: Up to 10kHz per channel (2.5kHz per channel when four channels are sampled simultaneously); Linear error ≤±0.05% at full scale (at 25°C)

Isolation and anti-interference: Electrical isolation between channels (isolation voltage ≥500V AC), and isolation of modules from the backplane bus

Anti-electromagnetic interference (EMC) complies with EN 61000-4 standard and is equipped with a built-in signal filter circuit

Working power supply: 24V DC (external power supply), power consumption ≤3W; The backplane bus power supply is only used for communication and can maintain the communication link without an external power source

Operating temperature: 0°C to 60°C, storage temperature: -20 °C to +60°C; Humidity: 5%-95% RH (no condensation)

Certification and Standards: Compliant with CE, UL, and CSA certifications; Compatible with all series of S7-300 cpus

The software supports adaptation to Step7 V5.x programming software (V5.3 and above), supports setting the range, sampling rate, and filtering parameters through hardware configuration tools, and supports interrupt-triggered acquisition

Function

High-speed and high-precision signal acquisition: 4-channel support for differential input, 16-bit high resolution combined with a 10kHz single-channel sampling rate, can accurately capture high-frequency changing analog signals, meeting the requirements of real-time control for signal response speed.

Multi-signal type compatibility: Flexibly adapt to voltage and current type analog signals. The measurement range can be independently configured through software, and different types of sensors can be connected without replacing hardware.

Enhanced anti-interference and isolation: Dual electrical isolation between channels and between modules and systems effectively resists electromagnetic interference generated by motors and frequency converters in industrial sites. It is equipped with a built-in configurable filter circuit, which can adjust the filter parameters according to the on-site noise conditions to balance the sampling rate and signal stability.

Flexible collection mode: Supports cyclic collection and interrupt collection. On-demand collection can be achieved through programming to reduce CPU load. The collected data is directly stored in the PLC process image area, supporting rapid reading and processing.

Diagnosis and Fault Feedback: It is equipped with power fault monitoring, channel overload detection, and signal disconnection diagnosis functions. Fault information is uploaded to the PLC in real time and supports online viewing of fault status through the Step7 software, facilitating quick problem identification.

Application scenarios

In the field of motion control: Position/speed feedback collection for machine tools, robots, and automated conveyor lines, analog signals connected to sensors such as grating rulers and encoders, with a sampling rate of 10kHz to ensure rapid response and positioning accuracy in motion control.

Real-time monitoring in process industry: Instantaneous pressure/temperature collection for chemical reaction vessels and pharmaceutical fermentation tanks, high-speed capture of sudden parameter changes during the reaction process, providing rapid data support for emergency interlock control. High-frequency monitoring of instantaneous flow and liquid level in the water treatment industry.

Power and energy monitoring: Instantaneous current/voltage collection for generator sets and energy storage power stations, capturing changes in electrical parameters during grid fluctuations and equipment start-up and shutdown, supporting power quality analysis and fault tracing. Real-time sampling of the output power of the photovoltaic inverter.

Mechanical condition monitoring: Vibration signal collection for fans, pump sets, and motors, high-frequency sampling to capture abnormal vibration characteristics of equipment, providing a data foundation for predictive maintenance.

High-precision testing and measurement equipment: Analog data acquisition for industrial inspection instruments and laboratory test platforms, such as force value and displacement signal acquisition in material tensile tests. 16-bit accuracy and high-speed sampling meet the accuracy and timeliness requirements of test data.

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