SLC 500 16-Point AC Input Module | 1746-IA16 Allen Bradley

Availability: 20 left in stock

Product Overview The Allen Bradley 1746-IA16 acts as a high-density, discrete AC input module for the legacy SLC 500 platform....

SKU: 1746-IA16

Manufacturer: Allen Bradley
Product No.: 1746-IA16
Product Type: Discrete AC Input Cards
Product Origin: USA
Payment:T/T, Western Union
Weight: 450g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen Bradley 1746-IA16 acts as a high-density, discrete AC input module for the legacy SLC 500 platform. This single-slot module reads 100/120V AC status signals from field-level command equipment, including pushbuttons, limit switches, selector dials, and motor starter auxiliary contacts. It bridges the gap between field infrastructure and control processors by translating external electrical logic into digital backplane commands. We provide this component as a 100% brand-new, original unit to secure immediate deployment compatibility and extend the operating lifespans of active factory chassis.

Technical Specifications

Parameter	Specification
Manufacturer	Allen Bradley
Product Line	SLC 500 System
Part Number	1746-IA16 (Series B Variant)
Condition	100% Brand New Original
Module Type	Digital AC Input Module
Number of Inputs	16 Channels
Points per Common	16 Points Shared via 1 Common Line
Voltage Category	100/120V AC Signal Input
Operating Voltage Range	85 to 132 VAC at 47 to 63 Hz
Nominal Input Current	10 mA per channel at 120 VAC
Max. Signal Transmission Delay	Turn-on: 35 ms / Turn-off: 45 ms
Typical Internal Signal Delay	8 to 10 ms typical
Galvanic Electrical Isolation	1500 V continuous channel-to-backplane
Status Display Indicators	Dedicated LED per input channel
Backplane Current Draw	0.085 A (85 mA) at 5 VDC nominal
Operating Temperature	0 to +60 degrees Celsius
Storage Temperature Profile	-40 to +85 degrees Celsius
Environmental Humidity Scope	5 percent to 95 percent non-condensing
Physical Weight	0.45 kg net / 2.5 kg shipping weight

Engineering Advantages

Suppresses High-Voltage Inductive Noise: Built-in 1500V optical isolation paths cleanly separate the volatile 120V AC field loops from the low-voltage microchips on the SLC backplane. This protects the CPU from destructive voltage anomalies caused by raw electrical surges.
Maximizes Density per Chassis Slot: Packing 16 independent input channels into a single operational slot layout allows system integration engineers to scale up field device capacity without purchasing secondary expansion racks or adding internal power supplies.
Simplifies Floor-Level Fault Finding: A matrix of 16 front-panel status LEDs maps active electricity profiles instantly. Technicians can visually trace live signals or pinpoint failed sensor lines right on the module faceplate without opening engineering software tools.
Lowers Total Internal Heat Loading: Pulling only 85 mA at 5V DC from the local power grid minimizes the module power footprint. This reduced draw maintains low internal ambient operating criteria, preventing adjacent communication and processing modules from experiencing early thermal wear.

FAQs

Can the 1746-IA16 handle 24V DC or low-voltage DC signals?

No. This specific input card operates exclusively within an AC voltage framework (85-132 VAC). Connecting lower-voltage DC lines will not overcome the turn-on threshold of the internal optical isolators, resulting in missed signals and software diagnostic failures.
How are the 16 input points grouped for wiring on this terminal block?

The 1746-IA16 features an architecture with 16 points per common line. This means all 16 AC input field circuits connect back to a single shared neutral return terminal on the block, requiring that all monitored devices derive from the same local AC distribution phase.
Does this module support hot-swapping while the SLC chassis is powered up?

No. The SLC 500 system architecture does not support RIUP (Removal and Insertion Under Power). You must isolate and shut down all primary chassis power before sliding this brand-new module into position to avoid arching across backplane pin arrays.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.