Allen-Bradley 1769-OF8V 8-Channel Analog Voltage Output Module

The 1769-OF8V module delivers high-precision analog output control for automation systems. This module belongs to the Allen-Bradley Compact I/O family. It provides eight single-ended voltage output channels for field devices. You can use this module with CompactLogix and MicroLogix 1500 controllers.

Technical Specifications

This section details the core technical parameters of the 1769-OF8V analog output module.

• Number of Outputs: Eight (8) single-ended channels.
• Output Ranges: ±10V DC, 0 to 10V DC, 0 to 5V DC, 1 to 5V DC.
• Full Scale Analog Ranges: ±10.5V DC, -0.5 to 10.5V DC, -0.5 to 5.25V DC, 0.5 to 5.25V DC.
• Digital Resolution: 16 bits plus sign (bipolar).
• Conversion Rate: 5 ms per module.
• Overall Accuracy: ±0.5% full scale @ 25°C (77°F).
• Bus Current Draw (5V DC): 145 mA maximum.
• Bus Current Draw (24V DC): 135 mA maximum.
• Heat Dissipation: 2.16 Watts.
• Output Load Resistance: > 1 kOhm at 10V DC.
• Capacitive Load Rating: Up to 1 µF.
• Short Circuit Protection: Up to 30 mA current limiting.
• Output Impedance: Less than 1 Ohm.
• Calibration Requirement: None required (hardware guaranteed).
• Power Supply Distance Rating: 8 modules.
• Operational Temperature: 0 to 60°C (32 to 140°F).
• Wire Type: Copper (90°C rated).
• Wire Size: 22-14 AWG solid or 22-16 AWG stranded.
• Dimensions: 4.65 x 1.38 x 3.43 inches (118 x 35 x 87 mm).
• Weight: 0.58 lbs (0.26 kg).

Data Formats & Compatibility

The 1769-OF8V supports multiple data formats for flexible programming.

• Raw / Proportional data format.
• Engineering unit format.
• Scaled for PID format.
• Percent full range format.

This module converts binary data from the CPU memory registers. The internal Digital-to-Analog Converter (DAC) handles all analog signal generation. Series A modules do not allow external power supply use. Series B modules support external 24V DC power for enhanced flexibility.

Installation Guidelines

Follow these steps for a correct installation of your 1769-OF8V module.

• Compatible Power Supplies: Use 1769-PA2, 1769-PB2, 1769-PA4, or 1769-PB4 units.
• Mounting Method: You can mount the module on a panel or a DIN rail.
• Location in Chassis: Insert this module into any 1769 CompactLogix I/O bank slot.
• MicroLogix 1500 Setup: Place this module after the base unit or any adjacent module.
• Grounding Requirement: Proper module and signal grounding reduces electrical noise effects.
• Single-Ended Wiring Note: This wiring type is more susceptible to noise than differential wiring.

Package List

Your shipment for each 1769-OF8V module includes the following items only:

• (1) Allen-Bradley 1769-OF8V 8-channel analog voltage output module.
• (1) Removable terminal block (1769-RTBN18 compatible).
• (1) Product installation instructions sheet.
• (2) DIN rail mounting clips (pre-attached).

Frequently Asked Questions (FAQ)

1. Which controllers work with the 1769-OF8V module?
The 1769-OF8V works with MicroLogix 1500 and all 1769 CompactLogix controllers.

2. Does the 1769-OF8V require field calibration?
No, this module requires no field calibration. The hardware design guarantees its accuracy throughout the product life.

3. What is the difference between Series A and Series B for this module?
Series A does not allow external power supply use. Series B allows external 24V DC power for the module.

4. What is the conversion rate for all eight channels?
The maximum conversion rate is 5 milliseconds for all channels on the 1769-OF8V.

5. Does this module offer short-circuit protection?
Yes, the module includes short-circuit protection up to 30 mA. It also protects against open circuit and overvoltage conditions.

Status Indicators & Diagnostics

The 1769-OF8V module helps you monitor system health easily.

• Module OK LED: Shows the operating status of the module.
• Over-range/Under-range Diagnostics: Each channel includes diagnostic features for signal validation.
• Output Ripple: ±0.05% for clean analog signals.
• Accuracy Drift: ±0.0086% FS per degree Celsius for stable performance.

Isolation & Protection Ratings

The 1769-OF8V provides strong electrical isolation for industrial environments.

• Working Voltage: 30V AC and 30V DC.
• Output Group to Bus Isolation: 500V AC and 710V DC for 1 minute.
• Output Load Current Maximum: 10 mA.
• Power-up Time: Less than 5 ms for quick system startup.
• Step Response (63%): Less than 2.9 ms.

The 1769-OF8V module offers accurate voltage output control for demanding automation tasks. Its eight channels support multiple voltage ranges with 16-bit resolution. Order the Allen-Bradley 1769-OF8V today for your CompactLogix or MicroLogix project.