Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1769-IF4XOF2 / 1769-IF4XOF2/A |
| Manufacturer | Rockwell Automation (Allen‑Bradley) |
| Series | Compact I/O (1769 Series) |
| I/O Configuration | 4 Inputs + 2 Outputs (Analog) |
| Resolution | 8-bit (256 steps) |
| Input Ranges | 0–10V DC, 0–20 mA (extended to 10.5V/21 mA) |
| Output Ranges | 0–10V DC, 0–20 mA |
| Input Impedance | 150 kΩ (Voltage), 150 Ω (Current) |
| Output Load Limits | Voltage: ≥1 kΩ; Current: ≤300 Ω |
| Conversion Method | Successive Approximation (ADC) |
| Response Time | Inputs: ~5 ms/ch; Outputs: ~0.3 ms |
| Accuracy (25°C) | Input: ±0.7% (V), ±0.6% (mA); Output: ±0.5% FS |
| Bus Current Draw | 120 mA @ 5V DC, 160 mA @ 24V DC |
| Operating Temp. | 0°C to 60°C (32°F to 140°F) |
| Dimensions (H×W×D) | 118 × 35 × 87 mm |
Main Features and Advantages
Cost-optimized space saver for basic analog tasks: The primary advantage of the 1769‑IF4XOF2 is its combination of input and output functionality in a compact form factor. By providing four acquisition channels and two control channels in one slot, it reduces the need for separate modules, lowering the overall system cost and chassis space requirements for small to mid-size CompactLogix or MicroLogix 1500 systems. Its 8-bit resolution is sufficient for applications like basic temperature control, simple pressure monitoring, or actuator positioning where 1-2% accuracy is acceptable.Flexible signal support with differential inputs: The module’s four input channels can be configured individually for voltage or current mode and wired as single-ended or differential inputs. This flexibility allows it to interface with a wide variety of 2-wire and 4-wire transmitters without external signal conditioners. The differential input capability provides improved noise immunity in electrically noisy industrial environments, which is a notable feature for a non-isolated, economy-grade module.
Application Field
The 1769‑IF4XOF2 is targeted at low-speed process control and monitoring applications. Typical use cases include water/wastewater treatment (pH control, tank level monitoring), HVAC systems (damper and valve positioning), and simple material handling processes (speed reference to drives, pressure feedback). It is well-suited for OEM machinery where analog I/O requirements are modest and system cost is a primary driver. Due to its 8-bit resolution, it is not recommended for high-precision tasks like laboratory instrumentation or closed-loop servo control.
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