Allen-Bradley 1769-IF4XOF2 – 4-Input / 2-Output Analog Combination Module | Compact I/O Platform
Engineering Background
The 1769-IF4XOF2 is part of Rockwell Automation’s Compact I/O (1769) family — a modular, DIN-rail-mounted I/O platform designed for MicroLogix 1500 and CompactLogix controllers. Introduced to consolidate analog signal handling into a single module footprint, the IF4XOF2 combines four configurable analog inputs with two analog outputs, reducing panel space and wiring complexity in process and machine control applications.
Product Positioning
Targeted at OEM machine builders, system integrators, and plant maintenance engineers who require a compact, cost-effective analog I/O solution within the Allen-Bradley ecosystem. The module is a direct fit for retrofit projects, spare-parts inventory, and new panel builds where Compact I/O architecture is already standardized.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Catalog Number | 1769-IF4XOF2 |
| Platform | Allen-Bradley Compact I/O (1769 Series) |
| Analog Inputs | 4 channels (single-ended or differential) |
| Analog Outputs | 2 channels |
| Input Signal Ranges | ±10 V DC, 0–10 V DC, 0–20 mA, 4–20 mA (software selectable per channel) |
| Output Signal Ranges | ±10 V DC, 0–20 mA, 4–20 mA (software selectable per channel) |
| Input Resolution | 16-bit (including sign bit) |
| Output Resolution | 13-bit |
| Input Impedance (Voltage) | ≥ 1 MΩ |
| Output Load (Current) | ≤ 1000 Ω |
| Output Load (Voltage) | ≥ 1000 Ω |
| Backplane Current Draw (5 V DC) | 75 mA |
| Backplane Current Draw (24 V DC) | 0 mA |
| External Power Supply | Not required |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95% non-condensing |
| Vibration | 2 g @ 10–500 Hz |
| Shock | 30 g operational |
| Enclosure Rating | Open type (IP20) |
| Certifications | UL, CE, C-Tick, CSA |
| Module Width | Single-slot (1769 standard) |
| Weight | Approx. 250 g |
| Compatible Controllers | MicroLogix 1500, CompactLogix (1769-L series) |
Proven Application Environments
- Process Control: PID loop control for temperature, pressure, flow, and level using 4–20 mA transmitters and control valves.
- Machine Automation: Servo drive reference signals, analog speed references for VFDs, and position feedback from analog encoders.
- HVAC & Building Automation: Monitoring of analog sensors (CO₂, humidity, differential pressure) with analog actuator control.
- Water & Wastewater: Pump speed control and flow/level monitoring in compact panel installations.
- Food & Beverage: Temperature profiling and dosing control in hygienic process lines.
- OEM Panel Builds: Space-constrained enclosures requiring combined I/O in a single module slot.
Engineering Advantages
- Dual-function in one slot: Eliminates the need for separate input and output modules, saving backplane slots and wiring terminations.
- Per-channel software configuration: Input and output ranges are set via RSLogix / Studio 5000 — no hardware jumpers required.
- 16-bit input resolution: Provides 65,536 counts of resolution for high-precision measurement applications.
- Differential input mode: Rejects common-mode noise in electrically noisy industrial environments.
- Backplane-powered: No external 24 V DC supply required for module operation, simplifying panel design.
- Hot-swap capable: Supports removal and insertion under power (RIUP) when used with compatible 1769 bus systems.
- Compact footprint: Single-slot 1769 form factor integrates seamlessly into existing Compact I/O racks.
System Architecture & Signal Flow
The 1769-IF4XOF2 connects directly to the 1769 backplane bus via the right-side bus connector. Analog input signals are routed through a multiplexed ADC with per-channel range selection registers. The controller reads input data and writes output data via the backplane at the configured RPI (Requested Packet Interval). Output channels pass through a 13-bit DAC with output range selection, driving either voltage or current loads. Channel-level fault detection (open-wire for current inputs, over-range) is reported back to the controller tag structure for ladder logic diagnostics.
Typical wiring topology: Field transmitters → terminal block → input channels (CH0–CH3) | Controller output tags → output channels (CH0–CH1) → control valve positioners or VFD analog inputs.
Sourcing & Quality Verification
- All units sourced from verified industrial surplus channels, authorized distributors, or factory-refurbished stock.
- Each module undergoes visual inspection for physical damage, label integrity, and connector condition prior to listing.
- Firmware version and catalog number are verified against Rockwell Automation’s published product compatibility matrix.
- Units are shipped in anti-static packaging with protective end caps on bus connectors.
- Certificate of conformance available upon request for regulated industries.
- Konmask.com maintains traceability records for all stocked units.
Procurement Process
- Step 1 – Confirm compatibility: Verify your controller model (MicroLogix 1500 or CompactLogix) and available backplane slots. Check RSLogix/Studio 5000 I/O tree for slot assignment.
- Step 2 – Request a quote: Contact support@konmask.com with your required quantity, delivery timeline, and any certification requirements.
- Step 3 – Order confirmation: Purchase order accepted via email. Proforma invoice issued within 1 business day.
- Step 4 – Shipping: Standard lead time 1–3 business days. DHL / FedEx express available for urgent requirements. Export documentation (commercial invoice, packing list, COO) provided for international shipments.
- Step 5 – Incoming inspection: Recommended to perform functional test on bench prior to panel installation. Konmask technical support available during commissioning.
Technical FAQ
Q: Is the 1769-IF4XOF2 compatible with CompactLogix 5370 controllers?
A: Yes. The module is compatible with all 1769 CompactLogix controllers (L16, L18, L24, L27, L30, L33, L35, L43, L45) as well as MicroLogix 1500. Verify slot count against your specific controller’s maximum I/O module limit.
Q: Can I mix voltage and current channels on the same module?
A: Yes. Each input channel is independently configurable for voltage (±10 V, 0–10 V) or current (0–20 mA, 4–20 mA) via the module configuration in RSLogix 500 or Studio 5000.
Q: What happens if a 4–20 mA input goes open-circuit?
A: The module detects the open-wire condition and sets a fault bit in the input data table. The controller can use this bit to trigger an alarm or safe-state output in ladder logic.
Q: Does the module support HART protocol?
A: No. The 1769-IF4XOF2 does not support HART pass-through. For HART-enabled analog I/O, refer to the 1769-IF4XOF2F or dedicated HART modules in the 1756/1769 family.
Q: What is the typical update rate (RPI) for analog data?
A: Minimum RPI is 1 ms, though typical analog applications use 10–50 ms. The module updates all channels each RPI cycle.
Q: Is a new module available, or only surplus?
A: Konmask stocks both surplus/refurbished and new-in-box units depending on availability. Contact us for current stock status and lead times for factory-new units.
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