PRODUCT INFORMATION
Product Overview
Revision scope: These specifications describe 1756-IA32/A (Series A). Check the corresponding technical data before specifying another hardware series.
The Allen-Bradley 1756-IA32 is a ControlLogix digital input module. It provides 32 AC input channels arranged in two groups of 16 points each. The module operates at a nominal voltage of 120V AC across 47 to 63 Hz. Its operating voltage ranges between 74V AC and 132V AC. It occupies one single slot in a ControlLogix chassis.
Backplane current draw is 165 mA at 5.1V DC and 2 mA at 24V DC. Total backplane power consumption is 0.9 W. The unit features software-configurable input filter times to match process signal requirements. It uses electronic module keying and connects through compatible removable terminal blocks. This Series A hardware version supports 250V continuous basic insulation from inputs to backplane.
TECHNICAL DATA
Technical Specifications
These specifications describe 1756-IA32/A (Series A). Check the corresponding technical data before specifying another hardware series.
| Parameter | Specification |
|---|
| Number of Inputs | 32 (16 points per group) |
|---|
| Nominal Input Voltage | 120V AC (50/60 Hz) |
|---|
| Operating Voltage Range | 74...132V AC (47...63 Hz) |
|---|
| Backplane Current Draw @ 5.1V DC | 165 mA |
|---|
| Backplane Current Draw @ 24V DC | 2 mA |
|---|
| Total Backplane Power | 0.9 W |
|---|
| Power Dissipation (Max) | 6.1 W @ 60 °C (140 °F) |
|---|
| Thermal Dissipation | 20.8 BTU/hr |
|---|
| Off-State Voltage (Max) | 20V AC |
|---|
| Off-State Current (Max) | 2.5 mA |
|---|
| On-State Current (Min) | 5 mA @ 74V AC |
|---|
| On-State Current (Max) | 15 mA @ 132V AC |
|---|
| Inrush Current (Max) | 390 mA |
|---|
| Input Impedance (Max) | 14.0 kΩ @ 132V AC, 60 Hz |
|---|
| Cyclic Update Time | 200 µs...750 ms |
|---|
| Time Stamp of Inputs | ±200 µs |
|---|
| Isolation Voltage | 250V continuous (inputs-to-backplane), 125V continuous (group-to-group) |
|---|
| Slot Width | 1 slot |
|---|
| Operating Temperature | 0...60 °C (32...140 °F) |
|---|
TECHNICAL INFORMATION
Order Information
| Revision Part # | Also known as | Reference Price |
|---|
| 1756-IA32 Ser A | 1756-IA32/A, Series A | USD 930.00, indicative (Used/Refurbished) |
Reference prices are observed third-party market prices for the stated revision, not a final Aituos quotation.
TECHNICAL INFORMATION
Features
- Provides 32 input points divided into two isolated groups of 16 channels.
- Accepts operating line voltages from 74V AC to 132V AC at 47 to 63 Hz.
- Features software-configurable input filter delay times for on and off transitions.
- Offers input time stamping resolution of plus or minus 200 microseconds.
- Provides basic insulation rated at 250V continuous between inputs and backplane.
- Supports electronic software keying for slot-level identification.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to the ControlLogix chassis backplane across a single module slot.
- Field wiring interfaces through 36-pin removable terminal block housing 1756-TBCH or 1756-TBS6H.
- Provides two separate common return points labeled L2-0 and L2-1 for input groups.
TECHNICAL INFORMATION
Installation Guidelines
- Mounts into any open slot of a standard ControlLogix chassis.
- Requires user-defined mechanical RTB keying to ensure correct physical field connections.
- Routing of signal conductors must comply with Category 1 conductor guidelines.
TECHNICAL INFORMATION
Configuration Guidelines
- Input module parameters and cyclic update rates are software configurable.
- User-selectable Off-to-On filter times can be configured to 1 ms or 2 ms.
- User-selectable On-to-Off filter times can be configured to 9 ms or 18 ms.
- Module keying is configured electronically through software settings.
TECHNICAL INFORMATION
Compatibility
- Compatible with standard ControlLogix chassis architectures.
- Requires removable terminal block housing models 1756-TBCH or 1756-TBS6H for field connections.
TECHNICAL INFORMATION
Compliance and Certifications
- cULus Listed Industrial Control Equipment (UL File E65584)
- cULus Listed for Class I, Division 2 Groups A, B, C, D (UL File E194810)
- CE Marked (EMC Directive 2014/30/EU and LVD 2014/35/EU)
- RCM, KC, and UKCA compliant
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with standard ControlLogix chassis architectures. Requires removable terminal block housing models 1756-TBCH or 1756-TBS6H for field connections.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the operating voltage range of the 1756-IA32/A?
The module operates across an AC input range of 74V AC to 132V AC at 47 to 63 Hz.
Which removable terminal blocks fit the 1756-IA32/A module?
The module connects using 36-pin RTB housing models 1756-TBCH or 1756-TBS6H.
What is the reference price for an Allen-Bradley 1756-IA32/A module?
Commercial market observations show a reference price of approximately 930.00 USD. These figures are indicative market reference pricing only and are not a final quotation.
