Description
B&R 7AI774.70 Analog Output Module
Product Dimensions：
The B&R (Bernecker + Rainer) 7AI774.70 is a high-performance Analog Input Module belonging to the System 2005 family. This module is designed for industrial automation environments that require high-density, precise data acquisition from various analog sensors.
Product Detailed Description
The 7AI774.70 is an expansion module that provides 8 analog input channels. It is designed to interface with standard industrial signals, specifically current and voltage. The module converts these analog physical values into digital data that the B&R CPU can process for control algorithms, monitoring, and data logging.
Technical Parameters
| Parameter | Specification |
| Product ID | 7AI774.70 |
| System Family | System 2005 |
| Number of Inputs | 8 Analog Channels |
| Resolution | 12-bit |
| Input Signal Ranges | ±10 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA |
| Conversion Time | Approx. 1 ms for all channels |
| Input Impedance | > 1 MΩ (Voltage) / < 250 Ω (Current) |
| Galvanic Isolation | Input to backplane (500 V) |
| Power Consumption | Max 1.5 W from backplane |
| Diagnostics | LED status indicators for module and bus activity |
Product Advantages
- High Density: Offers 8 channels in a compact System 2005 form factor, allowing for significant I/O expansion without taking up excessive cabinet space.
- Versatile Connectivity: Support for both voltage and current signals on the same module (configurable via software or jumpers) provides flexibility when dealing with different sensor types.
- Industrial Reliability: Built with robust galvanic isolation to protect the central processing unit from electrical noise and surges originating in the field.
- Seamless Integration: Fully integrated into the B&R Automation Studio software environment, enabling easy configuration, scaling of values, and diagnostic monitoring.
Important Considerations & Precautions
- Wiring Polarity: Ensure correct polarity when wiring 4–20 mA loops. Incorrect wiring can lead to inaccurate readings or failure to detect “wire break” conditions.
- Shielding: To maintain 12-bit accuracy in electrically noisy environments (near VFDs or large motors), use shielded twisted-pair cables and ensure the shield is grounded at the designated B&R terminal.
- Backplane Power: When adding multiple 7AI774.70 modules to a single rack, calculate the total power consumption to ensure the rack’s power supply module is not overloaded.
- Signal Matching: Verify that the software configuration in Automation Studio matches the physical input type (e.g., don’t send 20mA into a channel configured for 10V).
Product Applications
The 7AI774.70 is utilized in diverse industrial sectors for process monitoring:
- Manufacturing: Monitoring pressure sensors and flow meters on hydraulic or pneumatic assembly lines.
- HVAC & Building Automation: Gathering temperature and humidity data from large-scale air handling units.
- Energy Management: Measuring voltage and current from transducers to monitor power consumption in industrial plants.
- Plastic Processing: Precise feedback from position transducers and melt-pressure sensors in injection molding machinery.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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