6AG1124-0QC02-4AX1 SIEMENS

The ‌SIEMENS Digital Input Module (DI Module)‌ acts as the "sensory nerve" of Siemens industrial automation systems, serving as the critical bridge that connects physical on-site switch states to the PLC control logic. It reliably captures binary on/off signals from field devices and converts them into recognizable digital logic values for the controller. Fully compatible with SIMATIC S7 series PLCs, ET 200 distributed I/O systems and mainstream industrial fieldbus architectures, it is a foundational component for state monitoring, safety interlock and manual command collection across industrial scenarios.

Core Product Parameters

• ‌Channel configuration‌: 8/16/32/64 isolated input channels optional, supporting grouped potential division to adapt to different on-site signal common ground requirements
• ‌Signal compatibility‌: Natively supports 24V DC, 48V DC, 120V AC and 230V AC industrial standard digital signals, covering PNP, NPN and sink/source input wiring conventions
• ‌Response performance‌: Input delay adjustable from 0.05ms to 20ms via software configuration, balancing high-speed signal capture and interference filtering
• ‌Isolation performance‌: 1500V AC optoelectronic galvanic isolation between each input channel and the internal backplane bus, fully compliant with IEC 61000 EMC anti-interference standards
• ‌Diagnosis function‌: Front-panel channel-level LED status indicators, with optional open-circuit detection, short-circuit alarm and fault log recording for high-feature models
• ‌Reverse polarity protection‌: 24V DC models are built with reverse connection protection circuits, preventing hardware damage even if the power polarity is miswired on site
• ‌Operating environment‌: Industrial wide temperature range from -20°C to +60°C, IP20 protection rating, supporting hot-swap under live backplane bus
• ‌Current consumption‌: Typical input current per channel at 24V DC is 7mA, ensuring stable signal identification even with long-distance cable transmission

Key Product Advantages

1. ‌Flexible response configuration‌: The input filter delay can be adjusted freely in TIA Portal, allowing users to set ultra-short delay for high-speed signal capture in precision scenarios or extend delay to filter contact bounce and transient interference in harsh environments
2. ‌Excellent anti-interference capability‌: Independent optoelectronic isolation design effectively blocks on-site voltage surges and electromagnetic noise, preventing abnormal signal misjudgment caused by strong electromagnetic interference from nearby high-power equipment
3. ‌High space and cost efficiency‌: High channel density design integrates up to 64 input points in a single module slot, reducing total hardware procurement cost and cabinet space occupation significantly
4. ‌User-friendly deployment‌: Removable screw-type or push-in front connectors support pre-wiring on site, enabling fast module replacement without rewiring during maintenance to minimize downtime
5. ‌Wide scenario adaptability‌: Multi-voltage level models cover all common industrial digital signal types, no extra signal conversion relays are needed for heterogeneous device connection, simplifying system architecture

Important Notes

• Before wiring, confirm that the signal voltage type of the on-site field device completely matches the rated input voltage of the module. Connecting 230V AC signals to 24V DC modules will cause permanent burnout of the input circuit
• For long-distance signal transmission over 100 meters, use shielded twisted-pair cables and ground the shield layer at the control cabinet side only to avoid ground loop current leading to signal misjudgment
• Do not set the input delay to the minimum value in scenarios with severe on-site electromagnetic interference, otherwise transient interference pulses will be mistakenly identified as valid input signals
• It is strictly forbidden to hot-swap the module when the on-site signal circuit is powered on, otherwise instantaneous voltage surge may damage the internal optocoupler and logic processing chip
• Regularly check the tightness of wiring terminals every 12 months to prevent signal loss or unstable connection caused by loose contacts in long-term vibration industrial environments