Allen-Bradley 1794-FLA – FLEX I/O Analog Output Module | 1794 Series Platform
Engineering Background
The Allen-Bradley 1794-FLA is a dedicated analog output module within Rockwell Automation’s FLEX I/O platform — a modular, DIN-rail-mounted I/O system engineered for distributed control architectures. Designed to interface directly with 1794 adapter modules, the 1794-FLA delivers precision analog signal conditioning for process control loops in demanding industrial environments.
Product Positioning
Targeted at process engineers and system integrators requiring reliable analog output capability within Allen-Bradley ControlLogix, CompactLogix, or legacy PLC-5/SLC 500 ecosystems, the 1794-FLA provides a cost-effective, field-proven solution for voltage and current loop control. Konmask.com supplies this module as a genuine, quality-verified component for MRO and new-build projects worldwide.
Complete Technical Specifications
- Part Number / SKU: 1794-FLA
- Manufacturer: Allen-Bradley / Rockwell Automation
- Series / Platform: FLEX I/O – 1794 Series
- Module Type: Analog Output
- Output Channels: 2 (isolated)
- Output Signal Range: 0–10 VDC / 0–20 mA / 4–20 mA (software selectable)
- Resolution: 12-bit (1 in 4,095)
- Output Accuracy: ±0.1% of full scale at 25°C
- Operating Temperature: 0°C to 55°C (32°F to 131°F)
- Storage Temperature: –40°C to 85°C
- Relative Humidity: 5% to 95% non-condensing
- Power Consumption: 75 mA @ 5 VDC (from backplane)
- Backplane Current Draw: 75 mA (5 VDC), 0 mA (24 VDC)
- Isolation: 250 VAC continuous channel-to-channel and channel-to-backplane
- Wiring: Removable terminal block (RTB), 0.2–2.5 mm² wire
- Dimensions (H × W × D): 94 × 23 × 87 mm
- Weight: 110 g
- Certifications: UL, CE, CSA, C-Tick
- Enclosure Rating: Open-style (IP20 when mounted)
- Country of Origin: USA
Proven Application Environments
- Oil & gas pipeline pressure and flow control loops
- Water/wastewater treatment dosing and valve positioning
- Pharmaceutical batch process control (FDA 21 CFR Part 11 compatible systems)
- Food & beverage temperature and pressure regulation
- Chemical plant distributed control systems (DCS integration)
- Automotive assembly line actuator control
- HVAC building automation with BACnet/IP gateway integration
- Power generation auxiliary control panels
Engineering Advantages
- Hot-swap capable: Module can be replaced under power without shutting down the FLEX I/O rack, minimizing process downtime.
- Software-selectable output range: Eliminates hardware jumper changes; range configured via RSLogix 5000 / Studio 5000 tag properties.
- High channel isolation: 250 VAC isolation prevents ground loop interference in multi-loop installations.
- Compact DIN-rail form factor: 23 mm wide profile maximizes panel density in space-constrained enclosures.
- Removable terminal block (RTB): Pre-wired RTB allows module swap without rewiring field cables.
- Diagnostic reporting: Over-range, under-range, and open-wire fault detection reported to controller via module status bits.
System Architecture & Signal Flow
The 1794-FLA mounts onto any 1794 terminal base unit (TBU) and communicates via the FLEX I/O backplane to a 1794 adapter (e.g., 1794-AENT EtherNet/IP, 1794-ADN DeviceNet, 1794-APB PROFIBUS). The adapter bridges the I/O data to the controller network. The controller writes analog output values (0–32,767 raw counts for 12-bit) to the module’s output image table. The module’s internal DAC converts digital values to the configured analog signal (voltage or current), which is then delivered to the field device (control valve, VFD reference input, positioner, etc.).
Typical wiring path: Controller → EtherNet/IP network → 1794-AENT adapter → FLEX I/O backplane → 1794-FLA → Field actuator
Sourcing & Quality Verification
- Authenticity: All 1794-FLA units sourced by Konmask.com are inspected for genuine Rockwell Automation labeling, date codes, and firmware revision markings.
- Condition options: New-in-box (NIB), factory-refurbished, and tested-surplus available — condition clearly stated on each listing.
- Functional testing: Surplus units undergo bench-level I/O verification prior to shipment.
- Documentation: Original Rockwell Automation datasheets and installation instructions available upon request.
- Warranty: 12-month replacement warranty on all units shipped from Konmask.com.
Procurement Process
- Submit RFQ: Contact support@konmask.com or use the on-site quote form with your required quantity and delivery timeline.
- Receive quotation: Pricing confirmed within 1 business day; bulk discounts available for orders of 5+ units.
- Order confirmation: Purchase order or online checkout accepted; T/T wire transfer, PayPal, and credit card supported.
- Shipping: DHL / FedEx / UPS express worldwide; EXW Xiamen or CIF destination available. Lead time: 3–7 business days for in-stock units.
- After-sales support: Technical assistance and return authorization handled by Konmask engineering team.
Technical FAQ
Q: Is the 1794-FLA compatible with ControlLogix controllers?
A: Yes. When paired with a 1794-AENT adapter, the module integrates seamlessly into ControlLogix and CompactLogix systems via EtherNet/IP using standard Add-On Profile (AOP) in Studio 5000.
Q: Can I mix the 1794-FLA with digital I/O modules on the same FLEX I/O rack?
A: Yes. FLEX I/O supports mixed analog and digital modules on the same adapter, up to the adapter’s maximum module count (typically 8 modules per adapter).
Q: What terminal base unit (TBU) is required?
A: The 1794-FLA requires the 1794-TB2 or 1794-TB3 terminal base unit. Verify TBU compatibility with your wiring gauge before ordering.
Q: Does the module support HART protocol?
A: No. The 1794-FLA is a standard analog output module without HART pass-through. For HART-enabled analog output, consider the 1794-OF4IH.
Q: What is the update rate for analog outputs?
A: Output update rate is determined by the adapter’s RPI (Requested Packet Interval), configurable from 1 ms to 3,200 ms in Studio 5000.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
