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1766-L32BWA

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Built for relay-based MicroLogix 1400 control, the AC-powered Allen-Bradley 1766-L32BWA combines twenty sinking or sourcing DC inputs with twelve relay outputs and omits embedded analog channels.
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Technical specifications for 1766-L32BWA

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1766-L32BWA
  • Product Family:
    MicroLogix
  • Product Type:
    MicroLogix 1400 Programmable Controller
  • Stock:
    1
  • User memory:
    20 KB
  • Digital inputs:
    12 high-speed and 8 standard, 24 V DC sinking/sourcing
  • Digital outputs:
    12 relay
  • Controller supply:
    100…240 V AC, 47…63 Hz
  • Power consumption:
    120 VA
  • User sensor supply:
    24 V DC at 250 mA
  • Ethernet interface:
    Isolated
  • Supported protocols:
    DF1, DH-485, Modbus RTU, ASCII, DNP3, EtherNet/IP messaging, DNP3 over IP, Modbus TCP/IP
  • Expansion bus:
    Up to 7 Bulletin 1762 modules
  • Enclosure rating:
    Open-style
  • Operating temperature:
    -20…60 °C
  • Weight:
    0.9 kg
  • Estimated shipping dimensions:
    9 x 18 x 8.7 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Singapore
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals DC Input Timing Relay Load Control Network & Expansion Product Applications

Features:

  • Configuration identity: AC-powered controller with DC inputs and relay-only outputs
  • Signal handling: separate high-speed and standard 24 V DC input groups
  • System integration: isolated Ethernet, serial channels, and Bulletin 1762 expansion
1766-L32BWA fits MicroLogix 1400 projects that need DC field sensing but do not require onboard analog channels.

Its relay-only output architecture supports mixed qualified load voltages when each common group and suppression method is engineered correctly.

Selection should be anchored to the exact suffix because BWA, BWAA, BXB, and BXBA variants change analog facilities, output technology, or controller power.
Apter Power can coordinate official-document checks, quotation, and sourcing support for 1766-L32BWA.
Allen-Bradley 1766-L32BWA MicroLogix 1400 Programmable Controller Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Counter channels: inputs 0…11 support the documented high-speed DC path, so filters and pulse width must match the field device.
  • Standard group: inputs 12…19 are scan-dependent channels and should not inherit a high-speed counter assumption.
  • Common polarity: wire each 24 V DC group as sinking or sourcing according to the approved field-power design.
  • Grouped contacts: map the twelve relay outputs by common before moving an existing terminal schedule.
  • Inductive loads: apply manufacturer-recommended suppression so coil energy does not shorten contact life or disturb nearby inputs.
  • Commissioning: prove each voltage group under representative load and confirm the programmed safe state after a fault or mode change.
  • Ethernet role: validate the selected EtherNet/IP messaging, Modbus TCP/IP, or DNP3 over IP design against the peer device.
  • Serial role: retain the documented DF1, DH-485, Modbus RTU, ASCII, or DNP3 settings when restoring an installed project.
  • Local expansion: remain within seven Bulletin 1762 modules and complete the published bus-current calculation before adding hardware.
  • Discrete machine control: process 24 V DC sensor states and switch qualified relay loads in compact equipment.
  • Pulse monitoring: use the documented high-speed input group for encoder or counter tasks within official frequency limits.
  • Networked cell control: exchange controller data through the supported Ethernet or serial messaging protocols.
Description
1766-L32BWA is the MicroLogix 1400 configuration that combines an AC controller supply with 24 V DC sinking or sourcing inputs and relay-only outputs. It provides the family LCD, isolated Ethernet interface, serial communications, and local expansion bus without the embedded analog channels found in the BWAA catalog.

For pulse-sensitive field signals, 1766-L32BWA separates twelve high-speed inputs from eight standard inputs. The relay output bank is intended for qualified discrete loads, while its grouped commons, contact limits, and load suppression must be reflected in the panel wiring and commissioning plan.

A retrofit using 1766-L32BWA should preserve the original input common arrangement, relay voltage groups, communication protocol, IP and serial settings, expansion-module inventory, and controller project. The complete catalog number is essential because neighboring MicroLogix 1400 versions change supply, output technology, and analog capability.
Revisions

Revision Part #

Also known as

1766-L32BWA Series A
1766-L32BWA/A, Series A
1766-L32BWA Series B
1766-L32BWA/B, Series B
1766-L32BWA Series C
1766-L32BWA/C, Series C
Alternative Names
Allen-Bradley 1766-L32BWA Rockwell Automation 1766-L32BWA AB 1766-L32BWA 1766L32BWA 1766 L32BWA MicroLogix 1400 1766-L32BWA
Technical notes
Before reusing the controller user supply on 1766-L32BWA, total every sensor and interface load; Rockwell Automation assigns this source to input devices only. If an actuator or output circuit draws from it, isolate that load and provide qualified field power before energizing the rebuilt panel.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why can a pulse counter on 1766-L32BWA miss transitions after otherwise correct DC wiring?
Check whether the signal is on inputs 0…11, confirm the configured filter and counter function, measure pulse width at the terminal, and verify the sinking or sourcing common before changing logic.
How should a retrofit team validate Ethernet messaging for 1766-L32BWA without assuming that every RJ45 device is compatible?
Confirm the peer protocol, controller message type, addressing, port role, data map, and timeout behavior, then test read and write transactions before production cutover.
What should be investigated when relay loads chatter after installing 1766-L32BWA?
Compare output group power and commons with the official diagram, inspect coil suppression and loose returns, verify commanded state online, and test the affected group under a stable field supply.
Why can 1766-L32BWA display valid DC input states yet fail to run after a BWAA project archive is loaded?
Compare the project controller catalog, embedded I/O addresses, analog references, operating mode, and relay permissions with the BWA hardware; restore the validated BWA project before changing field wiring.
How can a buyer tell whether 1766-L32BWA was confused with the analog-equipped BWAA catalog before installation?
Match the complete nameplate, terminal legend, analog terminal absence, project I/O map, and purchase record before energizing the replacement.
How should another Bulletin 1762 module be approved for a system led by 1766-L32BWA?
Inventory the installed modules, verify catalog support and physical order, calculate 5 V and 24 V bus loading, and keep the total within the documented local-module limit.