Allen Bradley 1794-IE8 Analog Input Module

The AB 1794-IE8 is an 8-channel analog input module from the FLEX I/O series, designed to support both current and voltage signal inputs in distributed control environments. With 16-bit resolution and selectable input ranges (0–20 mA or ±10 V), the 1794-IE8 provides precision analog data acquisition across compact, space-efficient FLEX I/O systems.

Compatible with multiple FLEX terminal bases including TB2, TB3, TB3S, TB3T, and TB3TS, this module is ideal for flexible, decentralized process control systems where scalability and cost-effectiveness are critical.

Technical Specifications

Model: 1794IE8
Series: FLEX I/O
Type: Analog Input Module
Number of Channels: 8
Input Types: Voltage (±10 V), Current (0–20 mA)
Resolution: 16-bit
Signal Type: Differential (per channel)
Terminal Base Compatibility: TB2, TB3, TB3S, TB3T, TB3TS
Field Wiring Connection: Screw connection
Isolation: Channel-to-backplane isolation

Electrical Specifications

Input Range – Current: 0…20 mA
Input Range – Voltage: ±10 V DC
Power Supply Voltage: Supplied via backplane from terminal base
Conversion Time: <10 ms per channel (typical)
Input Impedance:

• Voltage Mode: ≥1 MΩ
• Current Mode: ~250 Ω
  Accuracy: ±0.1% of full scale (typical)
  Common Mode Rejection: ≥80 dB at 60 Hz
  Channel Diagnostics: Not included
  Field Power Supply Protection: Reverse polarity protection via base unit

Network & Interface Specifications

Communication Interface: FLEX backplane only
Integrated Protocol Support:
❌ EtherNet/IP
❌ Modbus
❌ DeviceNet
❌ TCP/IP
❌ IO-Link

Compatible Adapters: 1794-AENT, 1794-ACNR15, 1794-ADN, and other FLEX I/O adapters
I/O Mapping: Configured via Studio 5000 or RSLogix 5000
Hot Swappable: Yes, when used with compatible adapter and base

Mechanical Specifications

Enclosure Type: Open-style, to be installed in protective cabinet
Width: 94 mm
Height: 46 mm
Depth: 53 mm
Mounting Method: DIN rail mounting
Mounting Orientation: Horizontal or vertical
Weight: Approx. 150 g
Module Locking Mechanism: Mechanical latch to base

Environmental Specifications

Operating Temperature: 0…55 °C
Storage Temperature: –40…85 °C
Relative Humidity: 5% to 95% non-condensing
Shock Rating: 30 g operational
Vibration Resistance: 2 g @ 10…500 Hz
Pollution Degree: 2
Application Suitability: Indoor use in enclosed control cabinets
Altitude Limit: Up to 2000 m (without derating)

Compliance & Certifications

Certifications: UL, c-UL, CE, RoHS
Standards Met: EN 61131-2, IEC 61010-1
EMC Compliance: EN 61000-6-2 / 6-4
Use with: FLEX I/O communication adapters and terminal bases
Safety Category: General use (not SIL-rated)

Key Features & Benefits

✅ Dual-Mode Analog Input Support – Handles both ±10 V and 0–20 mA inputs with high precision

✅ High Resolution – 16-bit A/D conversion for accurate analog signal processing

✅ Compact FLEX I/O Design – Saves space and reduces wiring in distributed installations

✅ Wide Base Compatibility – Works with multiple FLEX terminal base options

✅ DIN Rail Mountable – Easily integrates into existing panel layouts with secure mechanical latching

📦 Order the Allen Bradley 1794-IE8 from Drive Outlet Megastore

At Drive Outlet Megastore we offer unbeatable Allen Bradley 1794-IE8 prices. This 8-point analog input module provides accurate voltage and current sensing in a cost-effective FLEX I/O format—available now with fast UK dispatch and expert support.

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