Allen-Bradley 1756-IA16 ControlLogix Digital Input Module
$123.00
$320.00
Description
Allen-Bradley 1756-IA16 ControlLogix Digital Input Module
Configured for AC digital signal acquisition in ControlLogix chassis systems, the Allen-Bradley 1756-IA16 (1756-IA16 digital input module) provides direct electrical state sampling across 16-channel 120 V AC input groups within a dual 8-point architecture interfaced through the ControlLogix backplane.
Suffix Breakdown & Model Matrix
No functional suffix segmentation beyond base order structure 1756-IA16 is defined in the provided dataset. The module is treated as a single fixed hardware configuration within the ControlLogix I/O family.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-IA16 |
| Brand | Allen-Bradley |
| Weight | 0.23 kg |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 0.58 W (backplane) |
| Number of Inputs | 16 |
| Input Groups | 2 groups of 8 inputs |
| Input Voltage Range | 74 to 132 V AC |
| Frequency | 50/60 Hz (47–63 Hz operating band) |
| Current Draw (5.1 V) | 100 mA |
| Current Draw (24 V) | 2 mA |
| Max Off-State Voltage | 20 V |
| Max Off-State Current | 2.5 mA |
| Slot Type | ControlLogix chassis-mounted module |
| Status Indication | Input status and module health LEDs |
ControlLogix Backplane Deterministic I/O Scanning
The 1756-IA16 operates through ControlLogix backplane cyclic scheduling, where digital input state transitions are sampled and mapped into controller input tags per scan cycle. Backplane arbitration ensures synchronized data exchange between I/O modules and CPU task execution, enabling deterministic update alignment across distributed chassis slots. Input group partitioning (8+8) supports parallel signal scanning without inter-group electrical coupling within the module architecture.
Frequently Asked Questions (FAQ)
Q: Does the 1756-IA16 support hot-swap insertion in a live ControlLogix chassis?
A: The module follows ControlLogix chassis rules; insertion/removal requires chassis and controller configuration support to avoid I/O task interruption.
Q: How is input grouping implemented electrically?
A: The 16 inputs are split into two independent groups of 8 channels, each referenced to its own internal common structure for AC signal acquisition.
Q: What defines off-state leakage behavior?
A: Off-state voltage and current limits (20 V max, 2.5 mA max) define the internal input circuitry threshold for valid logical OFF detection.
Field Installation Guidelines
-
Install module only in compatible ControlLogix chassis slot with proper backplane alignment.
-
Maintain correct AC input wiring segregation between input groups to avoid cross-coupling between channels.
-
Use shielded cable routing where high EMI sources exist, with shield termination at cabinet ground reference only.
-
Verify correct voltage range (74–132 V AC) before energizing input circuits.
-
Ensure terminal tightening and connector seating integrity prior to system power-up.
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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