Process Control Solution – Allen-Bradley 1756-OF6CI/A | ControlLogix Series
Where This Product Is Used
The Allen-Bradley 1756-OF6CI/A is engineered for demanding industrial environments where signal isolation, precision, and reliability are non-negotiable. Typical deployment scenarios include:
- Oil & Gas Processing Plants – Driving control valves and actuators in hazardous-area loops where ground isolation prevents noise-induced faults.
- Chemical & Pharmaceutical Manufacturing – Precise 4–20 mA or 0–10 V output to dosing pumps, variable-speed drives, and modulating valves in GMP-regulated lines.
- Power Generation & Utilities – Isolated outputs eliminate ground loops in high-voltage environments, protecting both instrumentation and personnel.
- Water & Wastewater Treatment – Continuous analog setpoint delivery to flow-control valves and pump drives across electrically noisy plant infrastructure.
- Automotive & Heavy Industry – Coordinating multi-axis motion and tension control where channel-to-channel isolation prevents cross-talk between independent drive loops.
- Food & Beverage Processing – Hygienic-area installations requiring isolated outputs to meet sanitation and electrical safety standards.
Technical Specifications
- Catalog Number: 1756-OF6CI/A
- Series: ControlLogix (1756)
- Manufacturer: Allen-Bradley / Rockwell Automation
- Output Channels: 6 isolated analog output channels
- Output Signal Ranges: 0–20 mA, 4–20 mA, 0–10 V, ±10 V
- Resolution: 16-bit
- Isolation: Channel-to-channel and channel-to-backplane isolation
- Update Rate: Configurable per channel
- Backplane Current Draw: 125 mA @ 5 V DC; 3 mA @ 24 V DC
- Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F)
- Storage Temperature: –40 °C to 85 °C
- Relative Humidity: 5–95% non-condensing
- Dimensions (H × W × D): 94.0 × 94.5 × 58.6 mm
- Weight: 280 g (approx.)
- Certifications: UL, CE, C-Tick, ATEX (Zone 2)
Why Engineers Specify This Model
- True Channel Isolation – Each of the 6 output channels is fully isolated from every other channel and from the backplane, eliminating ground loops in multi-loop installations.
- High-Resolution 16-Bit Output – Delivers fine-grained setpoint control critical for precision dosing, tension regulation, and valve positioning.
- Flexible Signal Ranges – Supports current and voltage output modes configurable in software, reducing the need for separate module types.
- Seamless ControlLogix Integration – Native backplane communication with Logix 5000 controllers; no external signal conditioning required.
- Diagnostic Reporting – On-board diagnostics detect open-wire, over-range, and under-range conditions, surfacing faults directly in Studio 5000.
- Compact 1756 Form Factor – Fits any standard ControlLogix chassis, maximising I/O density in existing panel layouts.
Complete System Bill of Materials
A typical ControlLogix analog output system using the 1756-OF6CI/A includes:
- 1756-OF6CI/A – 6-Point Isolated Analog Output Module (this item)
- 1756-L8x / 1756-L7x – ControlLogix Controller (e.g., 1756-L83E)
- 1756-A7 / 1756-A10 / 1756-A13 – ControlLogix Chassis (7, 10, or 13 slots)
- 1756-PA72 / 1756-PB72 – ControlLogix Power Supply (AC or DC)
- 1756-EN2T / 1756-EN3TR – EtherNet/IP Communication Module
- 1492-CABLE series – Pre-wired I/O cables for rapid field termination
- 1492-IFM series – Interface modules for DIN-rail terminal block wiring
Compliance & Industry Standards
- UL Listed – UL 508 (Industrial Control Equipment)
- CE Marked – EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU
- ATEX – Suitable for Zone 2 hazardous locations (gas group IIC, T4)
- RoHS Compliant – Restriction of Hazardous Substances Directive
- IEC 61131-2 – Programmable Controllers: Equipment Requirements and Tests
- ISA-S71.04 – Environmental Conditions for Process Measurement and Control Systems
Quality Assurance & Sourcing
Every 1756-OF6CI/A unit offered through Konmask.com undergoes a structured verification process:
- Authenticity Verification – Physical inspection of Rockwell Automation holographic labels, date codes, and firmware revision markings.
- Functional Bench Test – Each channel is exercised across its full output range prior to dispatch.
- Traceability Documentation – Lot numbers and revision codes recorded for full supply-chain traceability.
- Secure Packaging – ESD-safe bags, foam-lined cartons, and moisture-barrier packaging for international shipment.
- Warranty – 12-month replacement warranty against manufacturing defects.
How to Source This Part
To place an order or request a quotation for the 1756-OF6CI/A:
- Online: Add to cart directly on this page for in-stock units.
- Email RFQ: [email protected] – include quantity, required delivery date, and destination country.
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Lead Time: In-stock units ship within 1–3 business days; sourced units 5–15 business days.
- Export: We ship worldwide with full export documentation (commercial invoice, packing list, COO).
Application-Specific FAQ
Q: Can the 1756-OF6CI/A drive a 4–20 mA loop-powered transmitter directly?
A: No — the module sources current into a load; it is not loop-powered. The field device must be separately powered. Maximum load resistance is 1000 Ω for current outputs.
Q: Is channel-to-channel isolation sufficient for ATEX Zone 1 installations?
A: The 1756-OF6CI/A is rated for Zone 2. For Zone 1 applications, pair with a certified Zener barrier or galvanic isolator in the field wiring circuit.
Q: What firmware version is required in the controller for full diagnostic support?
A: Logix 5000 firmware v20 or later is recommended to access all on-board diagnostic tags for the 1756-OF6CI/A.
Q: Can I mix current and voltage outputs on the same module?
A: Yes — each channel is independently configurable for current or voltage output via the Studio 5000 module properties dialog.
Q: Is the /A revision the latest available?
A: Rockwell Automation may release subsequent revisions. Contact us to confirm the latest available revision and compatibility with your existing chassis firmware.
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