Get now: Allen-Bradley 1769-OF4VI Compact I/O Isolated Voltage Output
Atlantechdrives provides you the 1769-OF4VI, a specialized 4-channel analog voltage output module featuring individual channel-to-channel isolation. This module is the premier choice for mission-critical automation systems where ground loops or high-frequency electrical noise could compromise the integrity of command signals to drives and actuators.
- Channels: 4 Individually Isolated Voltage Outputs
- Output Ranges: ±10V, 0-10V, 0-5V, 1-5V
- Isolation: 30V AC / 30V DC (continuous) channel-to-channel
- Resolution: 15-bit plus sign
- Backplane Current: 145 mA @ 5.1V / 125 mA @ 24V
- Response Time: 2.9 ms per channel
Technical Performance: Precision Bipolar Control with Total Isolation
Purchase now the 1769-OF4VI to eliminate the most common cause of analog signal instability: common-mode voltage. Unlike standard modules that share a common reference ground, the 1769-OF4VI provides full galvanic isolation between each of its four outputs. This technical superiority ensures that if one Variable Frequency Drive (VFD) is grounded at a different potential than the rest of the rack, it will not induce «noise» or current offsets into the other three channels. The module supports bipolar ±10V DC ranges, providing the 15-bit resolution (32,768 discrete levels) required for precision motion control where the signal determines both the speed and direction of the actuator. When you procure the 1769-OF4VI, you are investing in a module that guarantees signal purity in chemical processing, oil and gas, and heavy manufacturing sectors.
Expert Tips: Optimizing Shielding for Isolated Loops
Even with the individual isolation of the 1769-OF4VI, wiring discipline is mandatory for high-resolution control. We recommend using high-quality shielded twisted-pair (STP) cabling for each ±10V run. The shield should be grounded only at the PLC chassis ground to avoid creating a ground loop through the cable itself. For best results, use the «Safe State» configuration in Studio 5000; this allows you to define exactly what voltage the 1769-OF4VI should output if communication with the CompactLogix controller is lost, protecting your equipment from uncontrolled motion. Sourcing your 1769-OF4VI from Atlantechdrives ensures you get a unit with healthy isolation transformers, safeguarding your CPU from field-side voltage spikes.
Maintenance and Signal Calibration
Maintenance for the 1769-OF4VI involves annual verification of the 0V and 10V setpoints using a calibrated multimeter. Over time, the internal reference voltage of analog-to-digital converters can suffer from thermal drift. If a channel reports a «Hardware Fault,» the individual isolation of the 1769-OF4VI ensures that the other channels remain operational, providing a higher level of system availability. Sourcing from Atlantechdrives provides the hardware reliability and deterministic performance required for precision voltage command tasks.
FAQs
Q: Does the 1769-OF4VI support current outputs like 4-20mA?
A: No, the 1769-OF4VI is strictly a voltage-only module. For isolated current, use the 1769-OF4CI.
Q: Is the 1769-OF4VI compatible with the MicroLogix 1500?
A: Yes, it is fully compatible with the 1764-LRP and 1764-LSP processors via the expansion bus.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
This 4-channel analog output module is the technical counterpart to the 1769-IF4 analog input card for PID control setups.
For voltage-based analog control, this isolated module integrates perfectly with a rack terminated by a 1769-ECR right end cap.
