WAGO 750-455 - Analog Input Module

This 4-channel analog input module from WAGO, model number 750-455, is designed for 4-20 mA curren...

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Product Information

Full details

This WAGO 750-455 module is designed for industrial automation applications requiring precise measurement of 4-20 mA current signals. It offers reliable data acquisition with its 12-bit resolution and 4 independent input channels, making it suitable for process control and monitoring systems. A key benefit is its robust design and electrical isolation, ensuring system integrity. However, users must ensure compatibility with their existing fieldbus system.

All features

BrandWAGO

Extended Product Information

FAQs

What type of signals does the WAGO 750-455 module process?

The WAGO 750-455 module is specifically designed to process 4-20 mA current signals.

How many analog inputs does this module have?

This module features four independent analog input channels.

What is the resolution of the analog-to-digital conversion?

The module offers a resolution of 12 bits for its analog inputs.

What supply voltage is required for the module?

The module requires a supply voltage of 24V DC.

Is electrical isolation provided?

Yes, the module provides 0.5 kV of electrical isolation.

What are the physical dimensions of the module?

The module has dimensions of 12 mm (width) x 100 mm (depth) x 69.8 mm (height).

Can this module be used for voltage inputs?

No, the WAGO 750-455 is designed exclusively for current input signals (4-20 mA).

Troubleshooting

No signal received from channels

Verify the 24V DC power supply is connected and active. Check that the 4-20 mA sensors are correctly wired to the input terminals and are functioning properly. Ensure the fieldbus connection to the PLC is established and the module is recognized by the system.

Inaccurate readings

Confirm that the sensor's output range matches the module's 4-20 mA input. Check for any potential electrical interference on the signal lines. Ensure the module's resolution (12-bit) is sufficient for the required measurement precision. Verify the PLC scaling is set correctly.

Module not recognized by PLC

Ensure the fieldbus system is properly configured. Check all connections between the fieldbus coupler/controller and the 750-455 module. Consult the fieldbus system's manual for specific integration steps.

Overheating

Ensure proper ventilation around the module within the control cabinet. Avoid installing the module in direct sunlight or near significant heat sources. Check if the ambient temperature exceeds the operational limits.

Pros and Cons

Pros

  • High accuracy with 12-bit resolution for precise signal processing.
  • Four independent input channels simplify multi-signal acquisition.
  • Standard 4-20 mA signal processing is widely compatible.
  • Electrical isolation enhances system reliability and safety.
  • Compact form factor conserves space in control cabinets.

Cons

  • Limited to 4-20 mA current signals; does not support voltage inputs.
  • Requires a 24V DC supply, limiting compatibility with other voltage systems.
  • Conversion time of 10 ms might be too slow for extremely high-speed applications.
  • IP20 protection requires installation within a suitable enclosure.
  • Does not include built-in diagnostic LEDs for individual channels.

Setup, Compatibility & Care

Setup:

  1. Mount the module securely onto a standard 35 mm DIN mounting rail.
  2. Connect the 24V DC power supply to the appropriate terminals.
  3. Wire the 4-20 mA current signals from your sensors to the input channels, ensuring correct polarity.
  4. Connect the module to your fieldbus system according to the system's documentation.

Compatibility:

  • This module is designed to integrate with WAGO's 750 series fieldbus systems.
  • It is compatible with controllers and PLCs that support standard analog input modules.
  • Ensure your fieldbus interface module is correctly configured to recognize this analog input module.

Care:

  • Keep the module clean and free from dust and debris. Use a dry or slightly damp cloth for cleaning; avoid solvents.
  • Ensure adequate ventilation within the control cabinet to prevent overheating.
  • Periodically check wiring connections for security and signs of wear.

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