1FT5076-0AC71-2-Z SIEMENS Digital input module

Description

1FT5076-0AC71-2-Z SIEMENS Digital input module

Product Dimensions：

Product Description

A Digital Input Module is designed to detect the discrete states of field devices. It typically monitors two conditions: “ON” (signal present) and “OFF” (signal absent). These modules are engineered to handle the electrical transition between the rugged field environment and the sensitive logic circuits of the CPU. They feature integrated optocouplers to provide galvanic isolation, ensuring that electrical surges or noise from the field do not reach the internal backplane bus of the PLC. Each channel usually includes status LEDs for immediate visual verification of the input state.

Product Parameters

The technical specifications of these modules define their compatibility with various sensors and environmental conditions:

• Input Voltage: Standard ratings typically include 24V DC, 48V DC, or 120V/230V AC.

• Input Characteristic: Designed according to international standards (such as IEC 61131-2) to ensure compatible switching levels for Type 1, 2, or 3 sensors.

• Input Delay: Programmable filter times (e.g., 0.05ms to 20ms) to prevent “chatter” from mechanical contacts.

• Channel Density: Modules are available in various configurations, commonly offering 8, 16, or 32 channels per unit.

• Power Consumption: Low internal power draw from the backplane bus, with specific ratings for the current consumption per activated channel.

Product Advantages

• High Interference Immunity: Built-in hardware filtering and electrical isolation protect the system against electromagnetic interference (EMI).

• Flexible Configuration: Adjustable parameters allow the user to tailor the response time of each channel to the specific needs of the connected device.

• Rapid Diagnostics: Advanced modules can detect and report wire breaks or missing supply voltages at the channel level, significantly reducing downtime.

• Space-Saving Design: High-density modules allow for a large number of inputs in a narrow width, optimizing control cabinet space.

• Rugged Construction: Designed to operate reliably under conditions of vibration, shock, and wide temperature ranges.

Precautions

• Sensor Type Matching: Ensure the module type (Sink/Source) matches the output type of the connected sensors (NPN/PNP) to ensure proper current flow.

• Cable Lengths: Be mindful of maximum permissible cable lengths to avoid voltage drops or the induction of parasitic signals in unshielded wires.

• Common Potential: Verify that the “M” (ground) or “L1” (hot) potentials are correctly grouped and connected according to the module’s terminal diagram.

• Safe Separation: When using high-voltage AC modules, ensure strict adherence to safety clearances and separation from low-voltage DC signal lines.

Product Applications

Siemens Digital Input Modules are fundamental to any automated system requiring status monitoring:

• Machine Monitoring: Receiving signals from limit switches, proximity sensors, and pushbuttons to track the position and status of mechanical parts.

• Safety Interlocking: Integrating signals from emergency stop buttons or light curtains into the control logic (when using fail-safe variants).

• Process Control: Detecting the status of pressure switches, level floats, or thermostat contacts in liquid and gas handling systems.

• Material Handling: Monitoring occupancy sensors on conveyor belts or sorting gates in logistics centers.

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