The Allen-Bradley 1794-OE8H (1794OE8H) FLEX I/O HART Analog Output Module is a high-performance, 8-channel isolated output solution engineered for process control applications requiring smart field device communication. This module delivers 16-bit resolution across multiple output ranges, including 0-20 mA, 4-20 mA, and 0-10V, ensuring precise and reliable analog control in harsh industrial environments. Its integrated HART pass-through capability allows seamless integration with HART-enabled transmitters and actuators, enabling remote calibration and diagnostics without additional wiring. The module is hot-swappable in compatible FLEX I/O chassis, reducing maintenance downtime, and supports a wide operating temperature range of -20°C to +55°C for reliable performance in extreme conditions. Below are the detailed specifications:
| Specification |
Details |
| Product Type |
FLEX I/O HART Analog Output Module |
| Model Number |
1794-OE8H (1794OE8H) |
| Number of Outputs |
8 isolated channels |
| Output Ranges |
0-20 mA, 4-20 mA, 0-10V |
| Resolution |
16-bit |
| Accuracy |
±0.05% of full scale (typical at 25°C) |
| HART Protocol |
HART pass-through per channel (Bell 202 standard) |
| Update Rate |
2 ms per channel (typical) |
| Load Impedance (Current Output) |
0-600 Ω per channel |
| Load Impedance (Voltage Output) |
≥ 10 kΩ |
| Isolation Voltage |
500V DC between channels and backplane |
| Power Supply Requirement |
24V DC nominal (19.2V to 31.2V range) |
| Current Consumption (Module Only) |
150 mA at 24V DC (typical) |
| Operating Temperature |
-20°C to +55°C |
| Storage Temperature |
-40°C to +85°C |
| Relative Humidity |
5% to 95% non-condensing |
| Vibration Resistance |
5 g at 10-500 Hz per IEC 60068-2-6 |
| Shock Resistance |
30 g per IEC 60068-2-27 |
| Certifications |
CE, UL, CSA, ATEX (Zone 2), IECEx (Zone 2) |
| Backplane Compatibility |
1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK (terminal bases) |
| Communication Adapter Compatibility |
1794-AENT, 1794-AENTR, 1794-ACN, 1794-ACNR, 1794-ASB |
| Weight |
Approximately 0.25 kg (0.55 lbs) |
| Dimensions (H x W x D) |
87 mm x 50 mm x 55 mm (3.4 in x 2.0 in x 2.2 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