Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1769‑IF16C / 1769‑IF16C/A |
| Manufacturer | Rockwell Automation (Allen‑Bradley) |
| Product Type | Compact I/O Analog Current Input Module |
| Input Channels | 16 single‑ended (non‑isolated group) |
| Input Ranges | 0–20 mA, 4–20 mA (software selectable) |
| Full Scale Range | 0–21 mA / 3.2–21 mA (with overrange) |
| ADC Resolution | 16‑bit (unipolar), 15‑bit + sign (bipolar) |
| Accuracy (@ 25°C) | ±0.5% of full scale (typical) |
| Update Rate | ~5 ms per channel (all 16 channels) |
| Power Supply | 5V DC (190 mA) & 24V DC (70 mA) via backplane |
| Isolation | 500V AC (group‑to‑bus), not channel‑to‑channel |
| Operating Temp. | 0 to 60 °C (32 to 140 °F) |
| Dimensions (H×W×D) | 118 × 35 × 87 mm (4.65 × 1.38 × 3.43 in) |
Main Features and Advantages
High‑Density Current Monitoring: The 1769‑IF16C packs 16 analog inputs into a single 35mm‑wide slot, maximizing I/O count in compact CompactLogix or MicroLogix 1500 chassis. It eliminates the need for multiple 4‑channel modules, reducing hardware costs and cabinet space. The module’s 249‑ohm input impedance and ±0.5% accuracy ensure reliable data acquisition from 4–20 mA loop‑powered sensors, which are the industry standard for process control.Advanced Diagnostics and Filtering: Unlike basic analog cards, the 1769‑IF16C provides per‑channel overrange/underrange detection (up to 21 mA), alerting operators to sensor faults or wiring breaks. It features software‑selectable notch filters (16 Hz, 50 Hz, 60 Hz) to suppress power‑line noise, which is critical in electrically noisy industrial environments. The removable screw terminal block (replaceable part 1769‑RTBN18) allows for pre‑wiring and quick module replacement without disconnecting all field wires.Seamless Integration with Logix Platform: The module is fully supported in Studio 5000 and RSLogix 5000, allowing engineers to configure scaling (e.g., engineering units), alarms, and filter settings on a per‑channel basis. It automatically populates the controller tag database with raw and scaled values, simplifying program development compared to legacy analog modules that require manual scaling logic.
Application Field
The 1769‑IF16C is ideal for process automation and machine monitoring where high‑density current signals are required. In water and wastewater treatment, it collects flow, pressure, and level data from multiple transmitters on a single skid. For chemical batching and pharmaceutical mixing, it monitors tank levels and pump speeds via 4–20 mA signals, ensuring precise recipe control.In material handling and packaging machinery, it interfaces with analog speed controllers and torque sensors. It is also commonly used in HVAC control panels to monitor duct pressure and air flow stations. Due to its group isolation design, it is best suited for applications where all sensors share a common ground reference; for mixed ground potential systems, an isolated module (e.g., 1769‑IF4I) is recommended.
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