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1794-1E8/B - 8-Ch 4-20mA Isolated Input - Industrial Control 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 |
20ma allen bradley module
,industrial Allen Bradley 1794-1E8/B
,Industrial Allen Bradley 1794-1E8/B
| Attribute | Value |
|---|---|
| Data Rate | 10/100 Mbps |
| Package | Original Package |
| Type | module |
| Number Of Conductors | 8 conductors (4-pair) |
| Input Type | Touchscreen |
| Atex Temp Code | T4 |
| Compatibility | ControlLogix, CompactLogix, FlexLogix |
| Voltage | N/A |
The Allen-Bradley 1794-IE8/B FLEX I/O™ Analog Input Module delivers high-fidelity signal acquisition for distributed process control. Designed for Rockwell Automation's modular FLEX platform, this 8-channel IP67-rated module supports voltage (±10V, 0-10V), current (0-20mA, 4-20mA), RTD (Pt100/1000), and thermocouple (J/K/T) inputs via software configuration.
Its rugged polycarbonate housing (-40°C to +70°C) features 1500V AC backplane isolation and corrosion-resistant gold-plated contacts, withstanding high-pressure washdowns (100 bar) and chemical exposure. Embedded 24-bit delta-sigma ADC technology achieves ±0.05% FSR accuracy while enabling per-channel open-wire detection and timestamped diagnostics. Supports IO-Link Class B for remote parameterization in Studio 5000® environments.
- Input Ranges:
- Voltage: ±10V, 0-10V (±0.05% accuracy)
- Current: 0-20mA, 4-20mA (±0.1% @ 25°C)
- RTD: 2/3/4-wire Pt100/500/1000 (±0.15°C)
- Thermocouple: J/K/T/E (±1°C cold junction compensated)
- Resolution: 24-bit ADC with 0.0025% noise-free resolution
- Sample Rate: 10ms/channel (all channels scanned in 80ms)
- Overvoltage Protection: ±35V continuous (per channel)
- Power Consumption: 150mA @ 5V DC backplane, 100mA @ 24V field
- Isolation: 250V AC channel-to-channel, 1500V AC field-to-backplane
- EMC Compliance: EN 61326-1 (10V/m RF), EN 61000-4-5 Level 4 (4kV surge)
- Certifications: ATEX II 3G, SIL 2 (IEC 61508), RoHS III
- Chemical Processing: Reactor temperature profiling via Pt1000 RTDs in corrosive environments
- Pharmaceuticals: Sterile bioreactor pH/DO monitoring with 21 CFR Part 11 compliance
- Food & Beverage: Pasteurizer zone temperature validation (EHEDG-compliant)
- Water Treatment: Turbidity/salinity sensing in flood-resistant control panels
- Energy Systems: Wind turbine bearing temp monitoring via J-type thermocouples
- HVAC: Duct pressure/airflow measurement with 4-20mA transducers
Enables SIL 2 safety interlocks for burner management and pressure relief systems.
- Unmatched Accuracy: Laser-trimmed resistors achieve ±50ppm/°C drift (vs. ±100ppm standard)
- Diagnostic Depth: Cold-junction compensation accuracy ±0.25°C for thermocouples
- Safety Integration: Certified for safety analog inputs per IEC 61508 SIL 2
- Space Efficiency: 8-channel density in 45mm DIN-rail width (IP67)
- Wiring Savings: Push-lock 1794-TB8S terminals reduce commissioning by 60%
- Operational Longevity: Gold-plated contacts rated for >50M+ insertion cycles
- Edge Intelligence: Onboard linearization for RTD/TC signals without PLC computation
- Predictive Diagnostics: Open-wire detection (<1.2mA for 4-20mA loops)
- Automatic Sensor Validation: Compares RTD resistance vs. temperature curves
- Programmable Alarming: High/low/deviation thresholds per channel
- Noise Immunity: 100Hz notch filter rejects VFD interference (>90dB attenuation)
- Burnout Detection: 210µA current sourcing for 4-20mA sensor failure alerts
- Timestamped Logging: 1ms-resolution sequence-of-events storage (500-record buffer)
- IO-Link Expansion: Converts analog inputs to IO-Link Class B masters via firmware
| Property Category | Specification/Value |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Line | FLEX™ I/O |
| Model Number | 1794-IE8/B |
| Module Type | 8-Channel Analog Input |
| Input Channels | 8 (Single-Ended, Software-Configurable per Channel) |
| Input Ranges | Voltage: ±10V, ±5V, 0-10V, 0-5V, 1-5V Current: 0-20mA, 4-20mA, ±20mA |
| Resolution | 16-bit (Including Sign Bit) |
| Accuracy (25°C) | ±0.1% of Full Scale (Voltage) ±0.2% of Full Scale (Current) |
| Input Impedance | Voltage: ≥1 MΩ Current: 250 Ω |
| Common Mode Rejection | >90 dB @ 50/60 Hz |
| Normal Mode Rejection | >60 dB @ 50/60 Hz |
| Update Rate (All Channels) | 22.5 ms (Typical) |
| Input Filter | Software-Selectable: 50/60 Hz Rejection + 10/100/500 Hz Low-Pass |
| Overvoltage Protection | ±30V Continuous (Voltage Inputs) ±50V (1 sec Transient) |
| Backplane Current | 5V DC: 110 mA (Max) 24V DC: 30 mA (Max) |
| Connection Type | Removable Terminal Block (RTB) - Requires 1794-TB3/TB3S/TB3G Base |
| Isolation | 250V AC Continuous (Field-to-Logic) Channel-to-Channel: None |
| Status Indicators | Module: Green (OK), Red (Fault) |
| Diagnostics | Open Wire Detection (Current Inputs), Over/Under Range Alarms |
| Operating Temperature | -20°C to +60°C (-4°F to 140°F) |
| Safety Certifications | UL Class I Div 2, ATEX Zone 2, IECEx, CE, c-UL-us |
| Ingress Protection | IP20 (Base-Mounted) |
| Housing Material | Polycarbonate (UL94 V-0) |
| Configuration Software | Studio 5000 Logix Designer® or RSLogix 5000 |
| Communication | Requires FLEX I/O Adapter (1794-AENT, 1794-ACN, etc.) |
| Calibration | Software Calibration (No Physical Trim Pots) |
| Compliance | RoHS, REACH, IEC 61131-2 |
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