Products Description
The Allen-Bradley 1756-IF6I is a high-performance isolated analog input module designed for ControlLogix systems. It delivers accurate, reliable analog data acquisition for complex industrial automation applications. Engineered for versatility and precision, this module ensures seamless integration with ControlLogix, CompactLogix, PLC-5, and other Allen-Bradley automation platforms.The 1756-IF6I is equipped with rate alarm for applications using the floating-point mode. This monitors the rate of change between input samples. Each channel exceeding the specified trigger point for that channel will produce an alarm. Process alarms are also present and are triggered when the module has exceeded its configured high or low limits for every channel.
Technical specifications

Model: 1756-IF6I
Module Type: 6-channel isolated analog input
Input Signal Types: 0–20 mA, 4–20 mA, ±10 V DC
Input Impedance: 100 Ω (current mode), >100 kΩ (voltage mode)
Accuracy: ±0.1% of full scale
Isolation: 1500 V channel-to-backplane and channel-to-channel isolation
Scan Rate: Up to 12 ms per channel
Resolution: 16-bit
Operating Temperature: 0°C to 60°C
Backplane Current: 240 mA typical
Mounting: Fits standard 1756 ControlLogix chassis
Certifications: UL, CE, and CSA compliant
Key Features and Benefits
- Compact Form Factor: Fits standard ControlLogix racks, conserving panel space while providing six isolated analog inputs in a single module.
- True Channel Isolation: Each of the six analog input channels is fully isolated, preventing ground loops and cross-channel interference, which is crucial in high-noise industrial environments.
- High Accuracy and Resolution: The module provides 16-bit resolution and ±0.1% full-scale accuracy, ensuring precise analog measurement for sensitive process control.
- Seamless Integration: Compatible with ControlLogix, CompactLogix, and PLC-5 systems, enabling easy system upgrades or expansions without disrupting existing operations.
- Simplified Configuration: Can be quickly configured and monitored using RSLogix 5000 or Studio 5000 software, reducing engineering and commissioning time.
- Robust Industrial Design: Rated for 0–60°C operation with high immunity to industrial electrical noise, making it reliable in demanding environments.
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