Description
Technical Specifications
- Input Voltage: 24 VDC
- Input Channel Quantity: Standard multi-channel digital input
- Operating Temperature Range: 0 °C ~ +60 °C
- Storage Temperature Range: -25 °C ~ +70 °C
- Input Current: Rated input current per channel 7 mA
- Bus Type: S5 dedicated backplane bus
- Isolation Mode: Photoelectric isolation between each channel and internal bus
Functional Features
- Collect DC switching signals from field sensors, proximity switches and buttons
- Photoelectric isolation between channels to prevent external interference from entering the system
- Signal state locking and upload to S5 CPU via backplane bus
- On-board LED indicators display the on-off state of each channel
- Overvoltage and reverse connection protection for input terminals
Performance Parameters
- Channel Isolation Voltage: 500 VAC
- Signal Sampling Cycle: ≤ 1 ms
- Insulation Resistance: ≥ 20 MΩ
- Shock Resistance: Meet DIN 40046 industrial standard
- Maximum Input Cable Length: 500 m (24 VDC signal)
Material Composition
- Outer shell: Industrial flame-retardant hard plastic
- Circuit substrate: Single/double-layer industrial PCB
- Isolation components: High-speed photoelectric coupler
- Terminal base: Thermosetting flame-retardant plastic, brass terminals with tin plating
Structural Characteristics
- Standard card-type structure for S5 series PLC rack installation
- Front panel with channel status indicator lights
- Rear side with backplane bus connector for data interaction
- Bottom integrated wiring terminal area, compact overall structure
Working Principle
After the field switching signal is connected to the input terminal, the signal is isolated and conditioned by the internal photoelectric coupler, converted into digital level signals recognizable by the S5 system bus. The module uploads all channel state data to the main CPU in real time according to the bus cycle, and the LED lights synchronously display the current state of each input channel.
Advantage Highlights
- Independent photoelectric isolation for each channel, strong anti-interference ability
- Built-in reverse connection and overvoltage protection, reduce module damage risk
- Mature circuit design, stable operation and long service life
- Perfect matching with full series of Siemens S5 PLC equipment
Applicable Industries
Traditional industrial transformation projects, old production line maintenance, metallurgy, thermal power, chemical industry, building materials industry
Model Series
Siemens SIMATIC S5 Series I/O Modules
Installation Requirements
- Install on dedicated S5 standard rack card slots
- Wiring strictly follow terminal definition, confirm positive and negative poles of 24 VDC
- The installation position is away from heat sources and strong vibration parts
- Ensure the backplane connector is fully inserted and contacted
Usage Notes
- Stop the system or cut off power before replacing the module
- Do not access voltage signals exceeding 24 VDC to the input channel
- Regularly check terminal wiring to prevent loose wiring caused by vibration
- Avoid using in humid and dusty environment for a long time
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