6SE7090-0XX84-OBCO SIEMENS Input module

Description

6SE7090-0XX84-OBCO SIEMENS Input module

Product Dimensions：

Product Description

The Siemens Input Module, part of the Signal Module (SM) portfolio, serves as the critical interface between physical field devices (sensors, switches, transmitters) and the Programmable Logic Controller’s Central Processing Unit (CPU). It converts electrical signals from the real world into digital information the CPU can process.

Siemens Input Modules are categorized primarily by the type of signal they process:

• Digital Input (DI) Modules:
  • Used for monitoring binary signals (ON/OFF, 1/0) from devices like limit switches, pushbuttons, and proximity sensors.
  • Feature various voltage levels (e.g., 24 V DC, 120 V AC, 230 V AC) and isolation types.
  • Often include features like input delays or filter times to suppress contact bounce or electrical noise.
• Analog Input (AI) Modules:
  • Used for monitoring continuous, variable signals from devices like pressure, temperature, and flow transmitters.
  • Accept standard industrial signals such as voltage ($pm 10 text{V}, 0-5 text{V}$), current ($0-20 text{mA}, 4-20 text{mA}$), or specialized signals (e.g., Thermocouples, Resistance Temperature Detectors (RTD)).
  • Contain an Analog-to-Digital Converter (ADC) to translate the physical signal into a digital data word (e.g., 12-bit, 13-bit, 16-bit resolution) for the CPU.

Modules are typically mounted next to the CPU (centralized) or within a remote I/O station (distributed) and connect to the backplane bus for power and data exchange.

Product Parameters

Product Advantages

• High Channel Density and Compact Design: Enables the configuration of many I/O points in a minimal control cabinet footprint, reducing space and cabinet costs.
• Integrated System Diagnostics: Modules provide self-monitoring capabilities, immediately reporting faults (e.g., missing supply voltage, wire break, short circuit) directly to the CPU and the engineering environment (TIA Portal) without extra configuration.
• Flexibility and Versatility: A broad portfolio covers standard, high-speed, failsafe (for safety applications), and technological inputs (e.g., RTD, Thermocouple, high-speed counting), allowing for precise adaptation to any application need.
• Easy Wiring Technology: Available with removable terminal blocks using either traditional screw terminals or modern Push-in technology, which significantly reduces wiring time and simplifies maintenance.
• Galvanic Isolation: Offers electrical isolation between the sensitive PLC electronics and the noisy field devices, ensuring reliable operation and protection against voltage spikes.

Important Notes

• I/O Address Mapping: Always confirm the correct mapping of the physical input channel to the symbolic address in the PLC program to prevent incorrect logic execution.
• Analog Scaling and Range: For AI modules, ensure the configured measurement range in the software precisely matches the signal type (Voltage/Current) and range of the connected field transmitter. Incorrect scaling leads to inaccurate data.
• Wiring Practice: Use twisted and shielded cables, especially for analog and high-speed digital signals, and correctly connect the shield to ground to maximize noise immunity (EMC compliance).
• Power Budget: Verify that the central power supply or the backplane power supply (via the CPU) can deliver the necessary operating current to all connected input modules.
• Module Replacement: Input modules are hot-swappable in many systems (meaning they can be replaced without switching off the PLC) but this feature must be confirmed in the specific product manual.

Product Applications

• Machine Builders (OEMs): Reading position feedback from limit switches, safety gate status, and various sensor inputs to control machine sequences and interlocks.
• Process Industries: Monitoring continuous variables like pressure, level, temperature, and flow from field instrumentation to execute closed-loop control (PID) in chemical and oil & gas plants.
• Building and Facility Management: Monitoring system status, such as fire/smoke detector status, security system inputs, and HVAC equipment operational modes.
• High-Speed Counting and Timing: Using specialized DI modules for precise high-speed counting from encoders or pulse generators in motion control and packaging applications.

Shipping Port: Xiamen, China

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