Allen-Bradley 1769-OF4VI CompactLogix Isolated Voltage Output Module
Manufacturer: Allen Bradley
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Part Number: 1769-OF4VI
Condition：New with Original Package
Product Type: Analog Output Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1769-OF4VI CompactLogix Analogue Output Module
The Allen-Bradley 1769-OF4VI, also cataloged as the 1769-OF4VI Analog Output Module, operates as a dedicated hardware component for converting digital controller values into isolated analog voltage signals within CompactLogix control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-OF4VI |
| Brand | Allen-Bradley / Rockwell Automation |
| Origin | USA |
| Module Type | Analog Voltage Isolated Output Module |
| Number of Outputs | 4 differential, individually isolated |
| Voltage Output Ranges | +/-10 VDC, 0-10 VDC, +/-5 VDC, 0-5 VDC |
| Resolution | 15 bits plus sign (bipolar), 16-bit signed |
| Conversion Rate | 120 ms max (all channels) |
| Isolation Voltage | 500 V AC or 710 V DC for 1 min (output group to bus), 30 V AC/30 V DC working voltage |
| Power Supply Options | 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4 |
| Power Supply Distance Rating | 8 modules |
| Slot Width | 1 |
| Heat Dissipation | 2.0 W max (all points -10 V into 2 k ohm) |
| Solid Wire Size | 22 to 14 AWG copper wire rated at 90 deg C |
| Stranded Wire Size | 22 to 16 AWG copper wire rated at 90 deg C |
| Dimensions | 11.8 x 3.5 x 8.7 cm |
| Weight | 0.20 kg (0.44 lbs) net / 2.5 kg shipping |
| Operating Temp | 0 deg C to +60 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Relative Humidity | 5% to 95% RH, non-condensing |
Backplane Bus Communication and Deterministic Scaling
The 1769-OF4VI interfaces directly with the CompactLogix system backplane, utilizing high-velocity bus communication paths to receive digital words from the controller CPU. The internal digital-to-analog converters (DAC) process these values synchronously, ensuring an exact output profile across all four channels within the 120 ms conversion window. System stability is maintained through the 8-module power supply distance rating, preventing voltage drops along the logical backplane rail. Channel-to-channel isolation mitigates ground loops and electrical noise injection across adjacent circuits, maintaining signaling integrity inside dense high-frequency industrial environments.
Frequently Asked Questions
Q: What is the mechanical limitation for installing the module away from the system power supply?
A: The module features a hardcoded power supply distance rating of 8. It must be positioned within 8 slots of an approved CompactLogix power supply module to prevent backplane bus voltage degradation.
Q: Does this module support hot-swapping under live backplane power?
A: No. Removing or inserting this module while the backplane power is active can cause an electrical arc, disrupting system communication or damaging internal logic circuits. The controller power source must be disconnected before installation.
Field Installation Guidelines
- Mounting Setup: Secure the module directly onto a standard 35 mm DIN rail or bolt it to a rigid backpanel using the integrated mounting feet. Maintain a minimum top and bottom clearance of 50 mm to allow natural thermal convection.
- Wiring Configurations: Route analog signal cables through dedicated, grounded conduits. Separate low-voltage analog wiring from high-voltage AC power lines by at least 30 cm to avoid electromagnetic cross-talk.
- Shield Grounding: Terminate the shield of the differential signal cables at one end only—preferably at the field device chassis or the designated system ground bus—to avoid the creation of ground current loops.
- Terminal Connections: Ensure all solid or stranded copper wires are stripped to the correct length, fully inserted into the terminal blocks, and torqued to the manufacturer specifications using the 1769-RD replacement door setup.