Description
Allen‑Bradley 1769-IF4I CompactLogix 4-Channel Isolated Analog Input Module
Product Description
The 1769-IF4I is a 4-channel individually isolated analog input module of Rockwell Allen‑Bradley Compact I/O family for CompactLogix controllers. It converts analog voltage or current signals from field transmitters into digital values for the PLC processor. Each channel features galvanic isolation between channels and backplane, effectively suppressing ground loop interference, which is critical for long field cables and noisy industrial environments. It supports multiple configurable signal ranges including 4–20mA, 0–20mA, ±10V, 0–10V, 0–5V and 1–5V. With selectable digital filtering and over/under-range detection, the module sends diagnostic status and process data to the CompactLogix CPU over the local backplane. It adopts compact DIN rail mounting design and is widely used for small and medium distributed automation systems.
1769-IF4I
Technical Specifications
- Part Number: 1769-IF4I
- Manufacturer: Rockwell Automation (Allen‑Bradley)
- Series: CompactLogix Compact I/O
- Device Type: 4-channel isolated analog input module
- Input Channels: 4 fully isolated differential channels
- Supported Signals: 4–20mA, 0–20mA, ±10V, 0–10V, 0–5V, 1–5V
- Resolution: 16-bit (with sign bit)
- Accuracy: ±0.3% full scale @25°C
- Channel Isolation: Galvanic isolation between each channel and backplane
- Backplane Current Draw: 145mA @5VDC; 125mA @24VDC
- Power Dissipation: 3 W
- Filter Options: Configurable filter frequency (10ms ~ 108ms update time)
- Operating Temperature: 0°C ~ +60°C
- Storage Temperature: -40°C ~ +85°C
- Relative Humidity: 5%~95%, non-condensing
- Mounting: 35mm DIN rail / panel mount
- Dimensions: 118 × 35 × 87 mm
- Weight: Approx. 0.3 kg
- Certifications: UL508, CE, Class I Div.2 hazardous location approval
Key Features
- Four fully galvanically isolated analog input channels to eliminate ground loop noise
- Multi-range configuration for both current and voltage field transmitters
- 16-bit high resolution for precise analog signal acquisition
- Configurable digital low-pass filter to reduce high-frequency interference
- Built-in over-range / under-range detection and channel fault diagnostics
- Compact Compact I/O form factor for DIN rail installation
- Supports hot-swap replacement within CompactLogix I/O rack
- Seamless configuration via Studio5000 programming software
Application Scenarios
- Water & wastewater treatment plant analog signal collection
- Small and medium petrochemical skid control systems
- Food & beverage batch production monitoring
- Packaging machinery temperature, pressure and flow measurement
- Building HVAC and energy monitoring automation
- Mining auxiliary equipment process signal acquisition
- Cement factory auxiliary rotating machinery monitoring
- Renewable energy small power station local control system
1769-IF4I
Matching / Auxiliary Components
- CompactLogix controller (L30ER, L35E, L43, L50 etc.)
- 1769 Compact I/O rack, bus expansion cable and end cap
- 1769 series power supply module
- 4-20mA / voltage transmitters (pressure, temperature, flow, level)
- Shielded twisted pair field instrument cables
- Studio5000 programming & diagnostic software
- Terminal wiring blocks for field sensor termination
- 1769-ECL / ECR end termination caps
Related Rockwell CompactLogix 1769 Series Models (9 pcs)
- 1769-IF4I 4CH Isolated Analog Input Module
- 1769-IF4 4CH Non-isolated Analog Input Module
- 1769-IF8 8CH Analog Input Module
- 1769-OF4CI 4CH Isolated Analog Output Module
- 1769-OF2 2CH Analog Output Module
- 1769-IR6 6CH RTD Temperature Input Module
- 1769-IT6 6CH Thermocouple Input Module
- 1769-IQ16 16CH Digital Input Module
- 1769-OB16 16CH Digital Output Module
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