Allen-Bradley 1769-OF4VI Analog Output Module

1769-OF4VI | 4-Channel Isolated Voltage Output

Product Introduction

The 1769‑OF4VI module from Allen‑Bradley is a high‑performance analog output solution for the CompactLogix control platform. It provides four individually isolated voltage output channels, each capable of delivering a 0‑10V signal. This design ensures signal integrity by preventing electrical interference between channels. With a 15‑bit resolution of 330 μV per bit, the module offers precise control for applications such as valve positioning, motor speed control, and actuator regulation. Furthermore, robust features like short‑circuit protection and a fast 0.4 ms power‑up response time guarantee reliable operation in industrial environments.

Technical Specifications

The 1769‑OF4VI is engineered for accuracy and reliability. Its key technical parameters are outlined below.

• Output Channels: 4 individually isolated differential channels.

• Voltage Range: 0 to 10V DC with a full‑scale range extending to 10.5V.

• Resolution: 15 bits, providing 330 μV per bit for fine control.

• Load Capacity: Maximum output current load is 5mA, supporting a resistive load up to 2 kΩ and a capacitive load of 1 μF per output.

• Protection Features: Short‑circuit protection is built in, with a maximum sustainable short‑circuit current of 42mA.

• Response Times: Power‑up response is under 0.4 ms, while power‑down completes in less than 21 ms.

• Conversion Rate: The maximum conversion rate across all channels is 120 ms.

• Power Requirements: The module draws 165 mA at 5V DC from the bus and dissipates 2.0 Watts of heat.

• Isolation: Each of the four outputs is individually isolated, and the module meets IEC Class 2 reinforced insulation standards.

• Accuracy: It delivers an accuracy margin of ±0.5% FS with a drift accuracy of just ±0.0086% FS per °C.

• Ripple Performance: Output ripple is maintained at ±0.05% across a 0 to 50 kHz frequency range.

• Module Error: Total module error is approximately ±0.8% under normal operating conditions.

• Field Calibration: No field calibration is required, simplifying installation and maintenance.

Mechanical and Environmental Specifications

This module is built to withstand typical industrial environments while maintaining reliable performance.

• Operating Voltage: 30V DC maximum.

• Wire Compatibility: Supports copper‑90 wire with solid wire sizes of 22–14 AWG and stranded wire sizes of 22–16 AWG.

• Dimensions: The module measures 4.65 x 1.38 x 3.43 inches.

• Weight: It weighs approximately 0.60 lbs (0.27 kg).

• Shipping Dimensions: The shipping box measures 8 x 8 x 5 inches with a shipping weight of 2 lbs.

• Series Compatibility: Available in Series A and Series B versions.

• Replacement Parts: A replacement door kit is available under part number 1769‑RD.

• Power Supply Distance: Supports up to 8 modules of power supply distance within the CompactLogix system.

Installation Guidelines

Proper installation of the 1769‑OF4VI ensures optimal performance and longevity. Follow these recommendations for a smooth setup process.

First, always ensure that system power is completely disconnected before installing or removing the module. This precaution protects both the equipment and the operator.

Next, mount the module securely into the CompactLogix chassis. The module is designed for straightforward installation, and its compact form factor allows for efficient use of panel space. Additionally, verify that the module is properly seated and that the terminal block is firmly attached. The terminal block is user‑replaceable, which is a convenient feature if it becomes worn or damaged over time.

For wiring, select the appropriate copper‑90 wire gauge based on your application. Solid wire should be between 22 and 14 AWG, while stranded wire should range from 22 to 16 AWG. Always follow local electrical codes when terminating connections. Furthermore, connect the earth ground to the designated terminal to ensure safety and reduce electrical noise.

Finally, after installation, power up the system and verify that the module is recognized by the controller. The fast power‑up response time of less than 0.4 ms means you can quickly confirm proper operation without unnecessary delays.

Packaging List

Each 1769‑OF4VI module is shipped with the following items:

• 1 x Allen‑Bradley 1769‑OF4VI Analog Output Module

• 1 x Removable Terminal Block (RTB)

• 1 x Replacement Door Kit (1769‑RD)

• Installation instructions sheet

Please inspect all items upon receipt. The packaging is designed to protect the module during transit. If any items are missing or damaged, contact your supplier immediately for assistance.

Shipping Information

All orders for the 1769‑OF4VI are shipped via trusted global carriers. We use FedEx, UPS, and DHL to ensure fast and reliable delivery to your facility. Each package is carefully packed to prevent damage during transport. Tracking information will be provided once your order is dispatched.

Frequently Asked Questions (FAQ)

Q1: What is the difference between the 1769‑OF4VI and the 1769‑OF4CI?

The 1769‑OF4VI provides voltage outputs (0‑10V), whereas the 1769‑OF4CI is a current output model. They serve different application needs based on the type of signal required by your field devices.

Q2: Can the terminal block be replaced if it gets damaged?

Yes, absolutely. The terminal block on the 1769‑OF4VI is user‑replaceable. You do not need to replace the entire module if the terminal block wears out or breaks.

Q3: Is field calibration required for this module?

No, field calibration is not required. The 1769‑OF4VI is factory‑calibrated and maintains its accuracy over time, significantly reducing maintenance efforts.

Q4: What is the maximum cable length I can use with this module?

While the module itself does not specify a maximum cable length, we recommend keeping analog signal wiring as short as possible to minimize noise and voltage drop. For most industrial applications, a distance of up to 50 feet (15 meters) is typically safe.

Q5: What happens if an output is short‑circuited?

The 1769‑OF4VI includes built‑in short‑circuit protection. If a short occurs, the module limits the current to a maximum of 42mA, protecting both the module and your connected devices from damage.