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- Allen Bradley
- 1769-OF4CI
- CompactLogix I/O Module
- USA
- 118 mm × 35 mm × 87 mm
- 0.3kg
- Xiamen, China
- New & In Stock
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Technical Report: Analog Output Module 1769-OF4CI
1. Product Overview
The 1769-OF4CI is a compact industrial analog output module designed for precision current signal control in automation systems. It is part of a modular PLC expansion architecture used in distributed control environments where multiple analog control points are required.
This module provides four fully isolated current output channels, allowing independent control of field devices such as valves, actuators, and proportional drives.
It is mainly used in systems requiring stable 4–20 mA or 0–20 mA analog current control signals, especially in process automation and machine regulation applications.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Type: Analog Output Module
- Technology Field: PLC-based Industrial Automation
- Manufacturing Origin: United States (varies by production batch)
3. Product Series
- Series Name: Compact I/O Series
- System Architecture: Modular PLC expansion system
- Compatibility: Compact PLC and Micro-class PLC controllers
- Installation Type: DIN rail modular backplane system
The Compact I/O architecture is designed for flexible system expansion without redesigning the entire control system.
4. Product Introduction
The 1769-OF4CI converts digital controller signals into precise analog current outputs. Each channel operates independently and is electrically isolated, ensuring stable signal integrity in noisy industrial environments.
The module is commonly used in closed-loop control systems where accurate current control is required for process regulation.
It supports configurable output ranges, allowing engineers to adapt it to different field devices without hardware changes.
5. Technical Parameters
5.1 Electrical Performance
| Parameter | Value |
|---|---|
| Number of Channels | 4 (individually isolated) |
| Output Signal Type | Current |
| Output Range | 0–20 mA / 4–20 mA |
| Full Scale Range | 0–21 mA / 3.2–21 mA |
| Resolution | 16-bit equivalent |
| Conversion Time | ~110 ms |
| Accuracy | ±0.35% full scale |
| Non-linearity | ±0.05% full scale |
| Load Resistance | up to 500 Ω |
| Output Protection | Open circuit / short circuit detection |
| Channel Isolation | Channel-to-channel + channel-to-bus |
5.2 Electrical Isolation & Safety
| Parameter | Value |
|---|---|
| Isolation Voltage | 500 V AC / 710 V DC (1 min test) |
| Working Voltage | 30 V AC / 30 V DC |
| Insulation Class | Reinforced industrial insulation |
| Fault Protection | Output clamping and diagnostic detection |
5.3 Power & Consumption
| Parameter | Value |
|---|---|
| Backplane Current Draw | ~145–165 mA @ 5V DC |
| Power Dissipation | ~2.0–2.5 W |
| Heat Output | Low thermal design for cabinet use |
5.4 Physical Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 118 mm |
| Width | 35 mm |
| Depth | 87 mm |
| Mounting Type | DIN rail / panel mount |
| Weight | 0.27 kg – 0.30 kg |
| Form Factor | Single-slot compact module |
5.5 Wiring & Installation
| Parameter | Value |
|---|---|
| Wire Type | Copper conductor |
| Solid Wire Size | 22–14 AWG |
| Stranded Wire Size | 22–16 AWG |
| Terminal Type | Removable screw terminal block |
| Shielded Cable Recommendation | Yes (for noise reduction) |
6. Product Applications
The module is widely used in industrial automation systems requiring analog current control signals.
Typical application scenarios:
- Chemical process control systems
- Water treatment automation
- Oil and gas pipeline control
- HVAC system regulation
- Pressure and flow control systems
- Motor speed regulation (via VFDs)
- Packaging machinery automation
- Industrial furnace and temperature control
Controlled field devices include:
- Control valves
- Proportional actuators
- Variable frequency drives
- Industrial dampers
- Flow regulators
7. Product Advantages
7.1 High Signal Precision
Each channel delivers stable 16-bit equivalent resolution, ensuring fine control of process variables.
7.2 Independent Channel Isolation
Each output channel is electrically isolated, reducing cross-channel interference and improving reliability in noisy environments.
7.3 Dual Signal Compatibility
Supports both 0–20 mA and 4–20 mA standards, making it compatible with most industrial field devices.
7.4 Strong Industrial Protection
Built-in fault detection, overload protection, and output clamping improve system safety.
7.5 Compact Structure
Small footprint allows high-density installation inside control cabinets.
7.6 Easy Integration
Designed for modular PLC systems with plug-and-play installation and minimal configuration effort.
8. Recommended Models (Same Series / Related Modules)
8.1 Same Series or Directly Related
| Model | Description | Key Parameters |
|---|---|---|
| 1769-OF2 | 2-channel analog output module | 2 outputs, current/voltage, compact design |
| 1769-OF8C | 8-channel analog output module | High-density output, multi-channel control |
| 1769-IF4 | 4-channel analog input module | Voltage/current input, same footprint |
| 1769-IF8 | 8-channel analog input module | Expanded input capability |
| 1769-OF4 | Standard 4-channel analog output | Non-isolated version, lower cost |
9. Recommended Models (Same Brand – Popular Industrial Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1769-L24ER | PLC Controller | Built-in CPU, Ethernet communication, modular expansion |
| 1769-L33ER | PLC Controller | Higher processing performance, motion control support |
| 1769-PA4 | Power Supply Module | 24V DC input, system backplane power distribution |
| 1769-IQ16 | Digital Input Module | 16-channel discrete input, fast response |
| 1769-OB32 | Digital Output Module | 32-channel transistor output, high-density control |
10. Summary
The 1769-OF4CI is a high-reliability analog output module designed for industrial process control environments requiring precise current signal output. With its 4 independent isolated channels, strong electrical protection, and compact modular structure, it is widely used in automation systems where accuracy and stability are critical.
Its combination of isolation design, flexible output ranges, and easy integration makes it a standard choice for modern PLC-based control architectures.