The Allen-Bradley 1794-IE8H is a high-performance FLEX I/O HART Analog Input Module engineered for demanding industrial automation environments. This module provides eight isolated analog input channels, each capable of accepting 4-20 mA current or voltage signals, with integrated HART protocol support for seamless communication with smart field devices such as pressure transmitters, temperature sensors, and flow meters. Designed for use in hazardous and general-purpose locations, the 1794-IE8H ensures precise data acquisition and diagnostic capabilities, reducing wiring complexity and maintenance costs. Its hot-swappable nature, combined with a compact form factor, makes it ideal for distributed control systems (DCS) and process automation applications where reliable signal integrity and remote monitoring are critical.
| Parameter |
Specification |
| Product Type |
FLEX I/O HART Analog Input Module |
| Model Number |
1794-IE8H |
| Number of Input Channels |
8 (isolated) |
| Input Signal Range |
0-20 mA, 4-20 mA, ±10 V, 0-10 V (per channel selectable) |
| Input Resolution |
16-bit (0.001% of full scale) |
| HART Protocol Support |
Yes, digital communication for smart transmitters (HART rev. 7) |
| Isolation Voltage |
500 V DC (channel-to-channel and channel-to-backplane) |
| Accuracy |
±0.05% of full scale (typical at 25°C) |
| Update Rate |
10 ms per channel (configurable) |
| Power Consumption |
2.5 W (typical) from backplane |
| Operating Temperature |
-20°C to +55°C (-4°F to +131°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Humidity Range |
5% to 95% non-condensing |
| Enclosure Rating |
IP20 (NEMA 1) when installed in suitable cabinet |
| Terminal Base Compatibility |
1794-TB3, 1794-TB3S, 1794-TBN, 1794-TBNF |
| Communication Protocol |
FLEX I/O backplane (ControlNet, DeviceNet, or EtherNet/IP via adapter) |
| Maximum Cable Length |
500 m (1640 ft) for analog signals, 1000 m (3280 ft) for HART |
| Diagnostics |
Open wire detection, under-range/over-range alarms, HART device status |
| Certifications |
CE, UL, cUL, ATEX, IECEx (Class I, Div 2) |
| Weight |
0.25 kg (0.55 lb) |
| Dimensions (H x W x D) |
94 mm x 46 mm x 75 mm (3.7 in x 1.8 in x 2.95 in) |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22