Allen-Bradley 1794-OF4I Analog Output Module – FLEX I/O, 4 Isolated Outputs
Allen-Bradley 1794-OF4I
1794-OF4I Analog Output Module
FLEX I/O Analog Output Module
Place of Origin:
USA
Brand Name:
Allen-Bradley
Allen-Bradley 1794-OF4I
,1794-OF4I Analog Output Module
,FLEX I/O Analog Output Module
1794-OF4I Analog Output Module
Four isolated analog output channels for FLEX I/O control systems, with configurable voltage and current signal ranges.
Application & Failure Scenarios
- Analog control: Sends voltage or current commands from a FLEX I/O system to connected field devices.
- Output fault: Missing or incorrect signals may interrupt a control loop and affect the associated process.
- Replacement sourcing: Commonly searched during maintenance when an output channel is suspected of failing or a spare module is required.
Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product family | 1794 FLEX I/O | Output channels | 4 isolated outputs |
| Resolution | 16 bit; 15 bit + sign as specified in technical data | External supply | 24V DC nominal |
| Supply range | 19.2–31.2V DC, including 5% AC ripple | Supply current | 210 mA at 24V DC |
| FLEXBUS current | 50 mA at 5V DC | Voltage ranges | ±10V, 0–10V, ±5V, 0–5V |
| Current range | 0–20 mA | Data formats | Two's complement, two's-complement percent, binary, offset binary |
| Conversion method | Digital-to-analog converter | Conversion rate | 2.5 / 5.0 ms |
| Voltage output load | Maximum load current: 3 mA | Current output load | 0–750 Ω resistive load |
| Accuracy at 25°C | 0.1% of full scale for voltage and current output | Temperature drift | Voltage: 0.0012% FS/°C; current: 0.0025% FS/°C |
| Calibration | Factory calibrated | Status indicator | 1 red/green indicator |
| Operating temperature | −20 to +55°C (−4 to +131°F) | Dimensions (H × W × D) | Approx. 46 × 94 × 53 mm |
Installation & Configuration Notes
Use the module with the appropriate FLEX I/O terminal-base arrangement. Verify the field wiring and external 24V DC supply before energizing the system.
Configure each output for the required voltage or current range and the controller's supported data format. Voltage outputs have a low load-current limit, while current-output operation depends on the connected load resistance. Confirm these limits against the field device before commissioning.
If an output is incorrect, check the configured range, channel data, field wiring and connected device before concluding that the module has failed.
AMIKON Industrial Supply
Practical sourcing support for industrial automation spare parts. Share your part number and delivery requirements to discuss availability, order details and shipping arrangements.
For DOA or transit damage, contact AMIKON promptly with the order reference, product label and supporting photos. Return authorization and warranty coverage are handled according to the confirmed order terms.
Request a Quote
To help us process your enquiry, please include:
Part Number · Quantity · Destination · Required Date · Machine/System Model
Frequently Asked Questions
1. Which output ranges can be configured?
The documented voltage ranges are ±10V, 0–10V, ±5V and 0–5V. Current output supports 0–20 mA. Confirm the required signal type before ordering and installation.
2. What external power supply is required?
The nominal external supply is 24V DC, with a specified range of 19.2–31.2V DC.
3. What should I check if an analog output is incorrect?
Check the configured output range, controller data, terminal-base wiring, external supply and connected field device before replacing the module.
4. What details are needed to request a replacement?
Provide the full catalog number, quantity, destination, required date and machine/system model. Include the required output range if known.
5. Can the 1794-OF4I be replaced without checking the existing configuration?
No. Confirm the terminal-base arrangement, signal range, wiring and controller configuration before installing a replacement.
Related Models
Additional industrial automation and spare-parts catalog numbers for general sourcing reference. These items are not presented as compatible replacements for the 1794-OF4I.
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