Allen-Bradley 1794-IE8H Flex I/O HART Analog Input Module
$123.00
$320.00
Description
Allen-Bradley 1794-IE8H Flex I/O HART Analog Input Module
Configured for analog signal acquisition in the Flex I/O 1794 system, the Allen-Bradley 1794-IE8H (1794-IE8H Flex I/O HART Analog Module) provides direct physical/electrical execution for eight single-ended voltage/current input channels. The module accepts 0-20 mA and 4-20 mA analog signals through Flex I/O terminal bases and transfers converted data through compatible communication adapters.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-IE8H |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.29 lbs |
| Operating Temp | 0 deg C to 55 deg C (32 deg F to 131 deg F) |
| Power Consumption | 3.9 W maximum at 31.2 VDC |
| Product Type | Flex I/O HART Analog Module |
| Product Line | Flex I/O 1794 |
| Input Channels | 8 single-ended non-isolated inputs |
| Input Signal Range | 0-20 mA, 4-20 mA |
| Resolution | 16 bits |
| Conversion Type | Successive Approximation |
| Absolute Accuracy | 0.1% Full Scale at 20 deg C |
| Temperature Accuracy Drift | 0.05% Full Scale for 0 deg C to 55 deg C |
| Step Response | 80 ms to 99% |
| External DC Supply | 24 VDC nominal |
| External DC Supply Range | 19.0 to 31.2 VDC including 5% AC ripple |
| FlexBus Current External Input | 5 VDC, 80 mA |
| Isolation Voltage | 50 V continuous |
| Mounting Method | DIN Rail |
| Terminal Base Compatibility | 1794-TB3G and 1794-TB3GS |
| Enclosure Rating | Open-style |
| Thermal Dissipation | 13.5 BTU/hr at 31.2 VDC |
HART Analog Signal Processing and Channel Configuration
The 1794-IE8H provides eight configurable analog input channels for current-based instrumentation signals. Each channel operates as a single-ended input path with non-isolated channel architecture. The module performs analog-to-digital conversion using successive approximation technology with 16-bit resolution.
The module supports Flex I/O HART analog data handling through compatible communication adapters. Signal processing includes configurable data formatting and monitoring through eight red fault indicators, eight yellow channel status indicators, and one green power indicator.
Frequently Asked Questions
Q: What terminal bases are compatible with the 1794-IE8H module?
A: The module is installed on Flex I/O terminal bases including 1794-TB3G and 1794-TB3GS. The terminal base determines field wiring connections.
Q: Does the 1794-IE8H provide isolated analog input channels?
A: No. The module uses eight single-ended non-isolated input channels with a specified continuous isolation voltage of 50 V.
Q: What external supply voltage range is required for operation?
A: The module requires a 24 VDC nominal external supply and operates within a 19.0 to 31.2 VDC range including 5% AC ripple.
Field Installation Guidelines
Install the 1794-IE8H on a compatible DIN rail assembly with the correct Flex I/O terminal base installed. Verify that field wiring follows the terminal base documentation and that analog signal conductors are separated from high-voltage power cables and high-frequency switching circuits.
Use shielded instrumentation wiring where required by the application. Connect cable shields according to the plant grounding standard to minimize electrical noise coupling into the analog input channels.
Confirm that the external 24 VDC supply polarity is correct before energizing the module. Check FlexBus connections, terminal seating, and indicator status after installation. Avoid routing low-level analog signal wiring parallel to motor feeders or drive output conductors.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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