Allen-Bradley 1769-OF4CI Analog Output Module

The Allen-Bradley 1769-OF4CI is a high-performance analog output module designed for Compact I/O systems. This module features four differential, individually isolated channels that are configurable for current signal outputs. It supports both 0-20 mA and 4-20 mA output ranges, making it suitable for applications requiring precise control over modulating actuators and other field devices. Compatible with MicroLogix 1500 and CompactLogix controllers, the 1769-OF4CI offers seamless integration and flexibility for industrial automation needs.

Key Features:

Channels: 4 differential, individually isolated
Output Range: 0-20 mA, 4-20 mA
Signal Format: Raw, Proportional, Engineering Unit, PID-scaled
Resolution: 16 bits (unipolar), 15.59 bits for 4-20 mA
Mounting: DIN rail or panel mount
Calibration: Auto-calibration on power cycle

Technical Specifications

Specification	Value
Part Number	1769-OF4CI
Manufacturer	Allen-Bradley
Product Type	Analog Output Module
Product Line	CompactLogix
Number of Outputs	4 (Differential, Isolated)
Output Signal Ranges	0-20 mA, 4-20 mA
Full Scale Analog Range	0-21 mA, 3.2-21 mA
Output Data Format	Raw / Proportional, Engineering Unit
Resolution	16 bits (unipolar), 15.59 bits (4-20 mA)
Non-Linearity	±0.05% Full Scale
Repeatability	±0.005%
Calibration	None required (auto-calibration)
Output Impedance	< 1 MΩ
Power Supply	1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4
Conversion Rate	110 ms
Heat Dissipation	2.0 W
Wire Size	22-14 AWG (solid), 22-16 AWG (stranded)
Operating Temperature	0°C to 60°C (32°F to 140°F)
Weight	0.56 lbs (0.26 kg)
Dimensions	118 x 35 x 87 mm (4.65 x 1.38 x 3.43 inches)

Performance & Installation

The 1769-OF4CI module features high-resolution analog outputs with 16-bit precision and a conversion rate of 110 milliseconds. It operates within a 0-20 mA or 4-20 mA output range, providing excellent accuracy for driving actuators and other field devices. This module is designed with an output impedance of less than 1 MΩ, ensuring minimal signal degradation and reliable performance.

This module is engineered for easy installation and maintenance. It features auto-calibration on power cycling, eliminating the need for manual calibration and ensuring long-term reliability. In addition, self-test is conducted automatically on every power cycle, allowing the module to enter full operational mode once the test is complete.

The 1769-OF4CI is built for durability and safety. It comes with over-voltage and short-circuit protection, safeguarding the module from unexpected electrical faults. The non-linearity of the module is ±0.05%, ensuring high precision even in demanding environments.

Compatibility & Power Supply:

The 1769-OF4CI is compatible with MicroLogix 1500 and CompactLogix systems, integrating seamlessly into both platforms. It supports a range of power supplies including 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4. For remote installations, the module can connect to DeviceNet or Ethernet communication adapters (1769-ADN and 1769-AENTR, respectively).

Safety & Installation Guidelines:

While installing the 1769-OF4CI, it is important to handle the module carefully to avoid electrostatic discharge (ESD) that could damage internal components. Use a static-safe workstation and always discharge static by touching a grounded object before handling the unit. When not in use, store the module in a static-shielded box to protect it from static buildup.