It achieves precise signal processing through 16 digital I/O channels, and is compatible with 24V DC industrial standard power supplies. Equipped with a moisture-proof and dust-proof conformal coating, and featuring a wide operating temperature range of -25°C to +70°C, it can stably adapt to harsh industrial environments such as manufacturing plants, energy management systems, and power substations.This circuit board supports Modbus series communication protocols, enabling seamless integration into existing PLC (Programmable Logic Controller) and SCADA (Supervisory Control and Data Acquisition) systems. Meanwhile, it boasts lightweight properties (0.3-0.5kg), a compact structure (minimum 100mm×50mm×40mm), and graded protection characteristics of IP67/IP20. It balances installation flexibility and environmental adaptability, and serves as a key component for realizing the closed loop of "signal monitoring - data transmission - equipment control" in industrial automation projects.

Core Technical Parameters

1. Electrical Performance and I/O Channels

Power Supply and Signal Specifications

• Supply Voltage: DC 24V with a tolerance of ±10% (21.6V-26.4V), compatible with switching power supplies commonly used in factories.

Channel Configuration

• Input Channels: 16 non-isolated digital inputs , and compatible with NPN/PNP type sensors.
• Output Channels: Some models feature a dual-mode design of "16 inputs + 16 outputs". The output type is transistor (0.5A per channel), which can directly drive small relays and solenoid valves; pure input models only include 16 input channels (marked by Guangzhou Qiming Automation and Triconex1 Automation), and selection should be based on specific scenarios.

Current Parameters

• Input Current: 5mA per channel. The low-power design reduces power supply load.
• Output Current: 0.5A per channel. The total output current does not exceed 8A (16 channels × 0.5A) to prevent overload.
• Response Time: The response time of digital input signals is <1ms, meeting the needs of real-time monitoring.

2. Communication Protocols and Compatibility

Core Protocols

• Supports Modbus RTU and Modbus TCP. The former is suitable for RS485 serial communication (maximum distance of 1200 meters), and the latter is suitable for industrial Ethernet (10/100Mbps, maximum distance of 100 meters).

Interface Types

• Communication Interfaces: RS485 terminal block (for Modbus RTU), RJ45 network port.
• I/O Interfaces: Spring-type terminal blocks or screw-fastened terminal blocks. The wire diameter is compatible with 0.2-1.5mm² (16-24 AWG), supporting multi-strand/single-strand wires.
• Controller Compatibility: Can be connected to mainstream controllers such as Schneider M340/M580 PLC, Siemens S7-1200/1500, and Rockwell ControlLogix, without the need for custom drivers.

3. Environmental Adaptability and Reliability

• Temperature Stability: Within the range of -25°C to +70°C, the input signal detection error is <±2% , and the forward voltage drop variation of the output transistor is <0.1V, ensuring no jamming at low temperatures and no drift at high temperatures.
• Anti-interference Capability:
• Electromagnetic Compatibility (EMC): Complies with EN 61000-6-2 (industrial immunity) and EN 61000-6-4 (industrial emissions) standards, and can resist electromagnetic interference generated by workshop motors and frequency converters.
• Voltage Fluctuation: Supports short-term (＜1 second) voltage drop to 18V while remaining operational, preventing data loss caused by power grid fluctuations.
• Lifespan and Failure Rate: MTBF (Mean Time Between Failures) > 100,000 hours (a general indicator for Schneider industrial modules), and the annual failure rate under normal use is <0.5%.

SES 2411 IND2411 Industrial control circuit board

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