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Description
Technical Specifications
Product Model | 1769-IF4XOF2 (1769-IF4XOF2/A)Manufacturer | Allen-Bradley / Rockwell AutomationProduct Type | Compact I/O Combination Analog Input/Output Module (4 AI + 2 AO)Number of Analog Inputs | 4 (single-ended, individually configurable)Input Ranges (software selectable) | ±10 V DC, 0–10 V DC, 0–20 mA, 4–20 mAInput Resolution | 16 bits (binary two’s complement for voltage; straight binary for current)Input Accuracy @ 25 °C | ±0.1 % of full scale typical (voltage); ±0.15 % of full scale typical (current)Input Impedance | > 1 MΩ (voltage mode); 250 Ω (current mode, internal shunt)Overrange Capability | -10 % to +10 % beyond selected range (indicated by status bits)Number of Analog Outputs | 2 (individually configurable)Output Ranges (software selectable) | ±10 V DC, 0–10 V DC, 0–20 mA, 4–20 mAOutput Resolution | 16 bitsOutput Accuracy @ 25 °C | ±0.1 % of full scale typical (voltage); ±0.15 % of full scale typical (current)Output Drive Capability | ≥ 10 mA (voltage); ≤ 500 Ω max loop resistance (current @ 20 mA)External Power Required | 24 V DC ±10 % (supplied to module power terminal); Backplane current draw: 5 V DC ≤ 85 mA, 24 V DC 0 mA (logic side only)Conversion Time | Approx. 2 ms per input scan cycle (all 4 inputs updated each module scan)Isolation (Field to Backplane) | 75 V DC continuous working; 1500 V AC for 1 s test (basic isolation)Terminal Type | Removable screw-clamp terminal block (1769-TB3 or 1769-TB1 compatible)Indicators | Module OK (Green = healthy, Red = fault), Input Data Valid LEDs per point group, Output Enabled LEDOperating Temperature | 0 °C to +60 °C (+32 °F to +140 °F)Storage Temperature | -40 °C to +85 °CHumidity (non-condensing) | 5 % – 95 % RHDimensions (H × W × D) | 132 mm × 35 mm × 117 mm (5.2″ × 1.38″ × 4.6″)Weight | Approx. 0.21 kg (0.46 lb)Mounting | 35 mm DIN rail or panel mount (1769 chassis compatible)Enclosure Rating | IP20 (install inside control cabinet)Certifications | UL Listed, cULus, CE Marked, C-Tick, RoHS Compliant, Class I Div 2 Groups A–D (certain revisions)
Main Features and Advantages
Space-saving combo architecture: The Allen-Bradley 1769-IF4XOF2 consolidates four analog inputs and two analog outputs into one 1769 slot, freeing adjacent slots for digital I/O or specialty modules. This is particularly valuable in CompactLogix L16/L18/L24/L30 rack systems that support only 6–8 local 1769 modules, allowing engineers to meet mixed-signal requirements without adding a second rack or remote I/O head.Per-channel software-configurable ranges: Each of the four input channels and both output channels on the Allen-Bradley 1769-IF4XOF2 can be independently set to voltage or current mode through RSLogix 500 / Studio 5000 programming software—no DIP switches or jumpers are required. This flexibility lets a single module monitor a 4–20 mA flow transmitter on Ch0, a ±10 V position feedback potentiometer on Ch1, a 0–20 mA pressure sensor on Ch2, and drive a 4–20 mA VFD reference on Out0 while supplying a ±10 V command to a proportional hydraulic valve on Out1, all simultaneously.High-resolution 16-bit conversion with diagnostics: Both the A/D and D/A sections of the Allen-Bradley 1769-IF4XOF2 use 16-bit converters, delivering fine granularity (e.g., 305 µA/LSB on 4–20 mA span) suitable for precision process monitoring and tight closed-loop analog control. The module continuously checks for over-range, under-range, open-wire (current inputs), and open-load (current outputs), making diagnostic bits available in the controller tag structure so that alarm logic or HMI messages can immediately alert operators to wiring faults.Independent 24 V DC field-power design: The Allen-Bradley 1769-IF4XOF2 requires a dedicated 24 V DC supply for the analog circuitry, which is isolated from the 5 V backplane logic. This separation allows the field-side analog commons to be tied to an isolated instrument power supply ground if needed, reducing ground-loop-induced measurement errors in sensitive low-level signal applications.Easy installation and replacement: The removable terminal block on the Allen-Bradley 1769-IF4XOF2 enables pre-wiring of field cables; during module replacement, the block transfers directly to the new module preserving all field connections. Auto-detection by the CompactLogix or MicroLogix 1500 processor means no manual addressing—simply add the Allen-Bradley 1769-IF4XOF2 to the I/O tree in the programming software, assign data files / tags, and download.
Application Field
The Allen-Bradley 1769-IF4XOF2 finds its primary application in compact machine control and small-process automation systems built around the CompactLogix or MicroLogix 1500 platforms. In packaging and converting machines—such as form-fill-seal equipment, cartoners, and label applicators—the Allen-Bradley 1769-IF4XOF2 reads analog feedback from nip-roll pressure transducers, web tension arms, and temperature sensors while simultaneously issuing analog speed commands to AC drives and positioning commands to proportional air cylinders or servo-axis analog interfaces. Food & beverage batching skids often employ the Allen-Bradley 1769-IF4XOF2 to measure tank level (via hydrostatic pressure transmitter, 4–20 mA) and ingredient flow rates, then modulate control valves through the analog outputs to maintain recipe-defined setpoints.In water/wastewater pump stations and small treatment plants, the Allen-Bradley 1769-IF4XOF2 acquires pH, ORP, dissolved oxygen, and turbidity analog signals from online analyzers and controls chemical dosing pumps or variable-frequency drives accordingly. Test and laboratory automation rigs use the Allen-Bradley 1769-IF4XOF2 to capture load-cell conditioned outputs or thermocouple-transmitter signals while driving programmable power supplies or hydraulic test actuators. Because the module supports both voltage and current modes on a per-channel basis, OEMs building multi-function machines with mixed European (±10 V) and North American (4–20 mA) instrument standards can standardize on the Allen-Bradley 1769-IF4XOF2 across their product line, reducing part proliferation. Its Class I Division 2 approvals also permit installation in appropriately rated enclosures for light hazardous-area process auxiliaries such as tank farm additive skids.
