Allen-Bradley 1756-IF8I ControlLogix Analog Input Module
$123.00
$320.00
Description
Allen-Bradley 1756-IF8I ControlLogix Analog Input Module
The Allen-Bradley 1756-IF8I, also cataloged as the 1756-IF8I Analog Input Module, operates as a dedicated hardware component for acquisition of voltage and current signals from field transmitters within the ControlLogix system. It provides 8 configurable input channels supporting mixed voltage and current measurement modes under ControlLogix backplane communication.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-IF8I |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.94 lbs |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 5.1 VDC 200 mA, 24 VDC 400 mA (backplane dependent) |
| Input Channels | 8 |
| Signal Types | Voltage, Current |
| Voltage Ranges | -10 to 10 V, 0 to 10 V, 0 to 5 V |
| Current Range | 0 to 20 mA |
| Conversion Method | Sigma-Delta |
| Resolution | 24 bit |
| Slot Width | 1 Slot |
| Isolation | Channel isolation (as specified in module design) |
ControlLogix Backplane Bus & I/O Configuration Behavior
The module operates on ControlLogix backplane communication with deterministic scan exchange. Mixed analog acquisition is executed through internal sigma-delta conversion with time-sliced channel processing. I/O density scaling is constrained by per-slot backplane current consumption and chassis power budget. Firmware execution aligns with ControlLogix module identity mapping and slot-based configuration indexing.
Frequently Asked Questions (FAQ)
Q: Can the 1756-IF8I support simultaneous voltage and current inputs across channels?
A: Yes. Each of the 8 channels can be independently configured for voltage or 0–20 mA current mode within a single module instance.
Q: What is the backplane current impact during full channel utilization?
A: The module draws up to 200 mA at 5.1 VDC and 400 mA at 24 VDC from the ControlLogix backplane depending on operating state.
Q: Is hot-swapping supported during active backplane communication?
A: Module removal is supported only under chassis power-down conditions or controller-safe state. Active removal may cause I/O configuration loss.
Field Installation Guidelines
Install the module into a ControlLogix chassis slot with verified backplane seating engagement. Use compatible terminal blocks for field wiring termination. Maintain shield continuity to chassis ground at a single termination point to avoid ground loop formation. Observe conductor routing separation between analog signal wiring and high-voltage power lines. Ensure chassis power is isolated prior to module insertion or removal.
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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