Automation Components Inc (ACI) AIM1 Module

The ACI AIM1 Analog Isolation Module is a critical component for contractors addressing signal interference and ground loop issues in complex building automation systems. This module provides optical isolation, effectively decoupling an analog voltage or current input signal from its corresponding output to maintain signal integrity across mismatched potentials. Engineered for precision, the AIM1 features a factory-calibrated 1:1 linear ratio, supporting 0 to 5 VDC, 0 to 10 VDC, or 0 to 20 mA input spans and converting them to matching output ranges. The unit utilizes an onboard isolation transformer to power the output circuitry, requiring a single 24 VAC external power source. This design is particularly effective for grounded electric actuator isolation and fluorescent light dimmer isolation, where common mode noise can compromise controller accuracy. By eliminating ground loops, the AIM1 ensures stable communication between disparate BAS controllers and field devices.

• Signal Integrity: High-speed optical coupling provides 1500V isolation between input and output stages.
• Universal Compatibility: Multi-range support for standard HVAC analog signals including 0-10V and 4-20mA loops.
• Simplified Installation: Integrated power isolation removes the need for multiple external transformers.
• Linear Accuracy: Precise 1:1 signal reproduction ensures that the controller's output matches the field device's demand without drift.

How do I resolve ground loop errors in 4-20mA circuits?
The AIM1 acts as a signal isolator, breaking the physical electrical connection between the source and the load while maintaining the analog value through optical transmission, which eliminates ground-to-ground voltage differentials.

Can the AIM1 convert a 0-10V signal to a 4-20mA signal?
The AIM1 is designed for 1:1 signal isolation within the same range (e.g., 0-10V in to 0-10V out). For signal conversion between different scales, verify the specific jumper configurations or secondary module requirements.

Is an additional power supply required for the output side?
No. The module includes an onboard 24 VAC isolation transformer that derives power for the isolated output from the primary 24 VAC supply, reducing cabinet wiring complexity.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.