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1794-OF41/A - 4-Ch 4-20mA Isolated Output - Industrial Automation Rugged High-Accuracy Analog Module
| MOQ: | 1 |
| Price: | USD 100-10000/Piece |
| Standard Packaging: | 50*50*50mm |
| Delivery Period: | 3-7 |
| Payment Method: | T/T |
| Supply Capacity: | 1/piece in stock |
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,Powerful Allen Bradley Module
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| Attribute | Value |
|---|---|
| Material | plastic |
| Shipping By | DHL/UPS/Fedex/EMS/TNT/Aramex |
| Module Type | Processor Module |
| Input Type | Single-Channel |
| Quality | 100% new |
| Condition | NEW |
| Ethernet Ports | 1 Ethernet RJ45 Category 5 |
| Analog Inputs | Thermocouple |
The Allen-Bradley 1794-OF41/A FLEX I/O™ Analog Output Module delivers precision control signals for critical industrial processes. Engineered for Rockwell Automation's distributed FLEX platform, this 4-channel module supports isolated 4-20mA/0-20mA current outputs and ±10V/0-10V voltage outputs with 16-bit resolution. Its rugged epoxy-sealed housing (-40°C to +70°C) provides IP67/NEMA 6 protection against washdowns, oils, and corrosive chemicals. Featuring channel-to-channel isolation (250V AC) and 1500V AC backplane isolation, it eliminates ground loops in noisy environments while embedded diagnostics enable predictive maintenance. Studio 5000® integration allows software-configurable ranges and alarm thresholds per point.
Key performance parameters:
- Output Types: 4-20mA / 0-20mA (current); ±10V / 0-10V (voltage)
- Resolution: 16-bit (±0.01% FSR accuracy @25°C)
- Load Capacity: 750Ω max (current), 5kΩ min (voltage)
- Update Rate: ≤1ms per channel (synchronized scan)
- Isolation: 250V AC channel-to-channel; 1500V AC field-to-logic
- Drift: <±100ppm/°C over operating range
- Power Consumption: 80mA @ 5V DC backplane; 100mA @ 24V field
- Compliance: EN 61326-1 (EMC); NAMUR NE43 diagnostics
- Certifications: ATEX/IECEx Zone 2; SIL 2 (IEC 61508); UL Class 1 Div 2
Demanding process control scenarios:
- Chemical Dosing: Proportional valve control for reactors with SIL 2 interlocks
- HVAC Systems: VFD speed regulation in critical airflow environments
- Water Treatment: Chlorine pump modulation with corrosion-resistant outputs
- Pharmaceuticals: Sterile bioreactor feed control (21 CFR Part 11 compliant)
- Food Processing: Conveyor timing with EHEDG-rated IP67 housings
- Energy Management: Gas turbine fuel valve positioning in hazardous locations
Ideal for control valves, I/P transducers, variable-speed drives, and servo amplifiers.
Operational superiorities:
- Diagnostic Intelligence: Open-circuit/short-circuit detection with NAMUR NE43 alarms
- Safety Integration: Certified for safety instrumented systems (SIS) without barriers
- Space Efficiency: 4 isolated channels in 75mm DIN width (60% smaller than competitors)
- Wiring Economy: 1794-TB3S screwless terminals reduce installation time by 50%
- Calibration Stability: Auto-zero compensation eliminates field recalibration for 5+ years
- Dynamic Response: ±0.1% settling time in <2ms for closed-loop systems
- Future-Proofing: Firmware-upgradable via Studio 5000® for protocol enhancements
Advanced control features:
- Ramp/Soak Profiling: Programmable output slew rates (0.1-1000mA/sec)
- Fail-Safe States: Configurable fallback values (hold/min/max) on communication loss
- Current Limiting: Foldback protection against inductive kickback
- Peer Copy: Mirror outputs to redundant modules via produced tags
- Waveform Generation: Built-in sine/triangle/square wave synthesis
- Diagnostic Logging: Time-stamped event storage (500+ records) for fault forensics
- IO-Link Integration: Convert analog signals to IO-Link Class A via adapter
| Property Category | Specification/Value |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Line | FLEX™ I/O |
| Model Number | 1794-OF41/A |
| Module Type | 4-Channel Isolated Analog Output + HART® Communication |
| Output Channels | 4 (Fully Isolated, Software-Configurable per Channel) |
| Output Signals | Voltage: 0-10V, ±10V, 0-5V, 1-5V Current: 4-20mA, 0-20mA, ±20mA |
| HART® Protocol | Integrated per Channel (HART 7 Compliant) |
| Resolution | Voltage: 15-bit Current: 15-bit |
| Accuracy (25°C) | Voltage: ±0.1% of Full Scale Current: ±0.1% of Full Scale |
| Load Limits | Voltage: ≥1 kΩ Current: ≤600 Ω (Compliance Voltage 19-30V DC) |
| Update Rate | 16 ms per Channel (All Channels Simultaneously) |
| Short-Circuit Protection | Voltage: Continuous Current: Automatic Reset with Thermal Shutdown |
| Isolation | 250V AC Continuous (Channel-to-Channel, Channel-to-Backplane) |
| HART® Data Integration | Digital PV/SV/TV/QV Variables + Device Diagnostics via PLC |
| Backplane Current | 5V DC: 150 mA (Max) 24V DC: 25 mA (Max) |
| Connection Type | 1794-TBN Terminal Base (Barrier-Type for HART®) |
| Status Indicators | Per Channel: Green (Active), Red (Fault) Module: Green (OK), Red (Fault) |
| Diagnostics | Open Wire (Current), Overload, HART® Device Failure, Calibration Alert |
| Operating Temperature | -20°C to +70°C (-4°F to 158°F) |
| HART® Command Support | Universal/Common-Practice Commands (0, 1, 2, 3, 9, 11, 12, 13, 48) |
| Safety Certifications | SIL 2 (IEC 61508), UL Class I Div 2, ATEX Zone 2, IECEx, CE, c-UL-us |
| Ingress Protection | IP20 (Base-Mounted) |
| Configuration Software | Studio 5000 Logix Designer® (v24+) + HART® Device DDT Files |
| Compliance | HART Field Communication Protocol (FOUNDATION™), RoHS, REAC |
Xiamen ZhiCheng Automation Technology Co., Ltd is a leading global supplier of control system components. We specialize in control systems and drives.
More about us, you can view our official website: www.zcsensors.com
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