Allen-Bradley 1769 Compact I/O Modules: 1769-OB32T

Technical Dossier

Product Details And Specifications

Allen-Bradley 1769 Compact I/O Series Technical Notes

The Allen-Bradley 1769 Compact I/O series is a modular distributed I/O platform engineered by Rockwell Automation for deployment with MicroLogix 1500 and CompactLogix controllers. It is one of the most extensively installed sub-rack I/O architectures in global heavy industry, with documented deployments in petrochemical refineries, nuclear auxiliary control systems, pharmaceutical batch processing facilities, and continuous-process manufacturing plants. The platform's side-bus expansion architecture, DIN-rail form factor, and deterministic scan-cycle behavior make it a reference standard for panel-mount I/O density in process automation. The 1769-OB32T — a 32-point, 24VDC sourcing (PNP) digital output module — is among the highest-volume SKUs in this series, used in high-cycle discrete output applications across all major industrial verticals.

1769 Compact I/O Full Catalog & Functionalities (SKU List)

Digital Output Modules

• 1769-OB32T: 32-point 24VDC sourcing (PNP) output, 0.5A/point, side-bus, high-cycle rated
• 1769-OB32: 32-point 24VDC sourcing digital output, standard current, no diagnostics
• 1769-OB16: 16-point 24VDC sourcing output module, 0.5A per point, standard density
• 1769-OB8: 8-point 24VDC sourcing output, 2A per point, high-current discrete loads
• 1769-OW8: 8-point relay output, Form A contacts, 2A, AC/DC load compatible
• 1769-OW16: 16-point relay output, 240VAC/24VDC rated, Form A contacts
• 1769-OA8: 8-point 120VAC triac output, zero-crossing switching, panel lighting loads
• 1769-OA16: 16-point 120VAC triac output module, zero-crossing, high-density AC control

Digital Input Modules

• 1769-IQ32: 32-point 24VDC sinking (NPN) digital input, standard density, side-bus
• 1769-IQ32T: 32-point 24VDC sinking input with diagnostics and hardware timestamp
• 1769-IQ16: 16-point 24VDC sinking digital input, standard density configuration
• 1769-IQ6XOW4: 6-point 24VDC input / 4-point relay output combination module
• 1769-IA8I: 8-point 120VAC isolated digital input, individually isolated commons
• 1769-IM12: 12-point 120VAC digital input module, standard non-isolated configuration

Analog Modules

• 1769-IF4: 4-channel analog input, 4–20mA / 0–10VDC selectable, 12-bit resolution
• 1769-IF8: 8-channel analog input, differential inputs, 16-bit resolution, high accuracy
• 1769-OF4: 4-channel analog output, 4–20mA / 0–10VDC, 12-bit, loop-powered
• 1769-OF2: 2-channel analog output, 4–20mA / 0–10VDC, 12-bit resolution
• 1769-IT6: 6-channel thermocouple/mV input, J/K/T/E/R/S/B type, CJC integrated
• 1769-IR6: 6-channel RTD/resistance input, PT100/PT1000/Ni120, 16-bit resolution

Communication & Adapter Modules

• 1769-AENTR: Dual-port EtherNet/IP adapter for distributed 1769 I/O bank connectivity
• 1769-ADN: DeviceNet adapter module for 1769 remote I/O expansion over DeviceNet
• 1769-SDN: DeviceNet scanner module for MicroLogix 1500 master node configuration

Power Supply Modules

• 1769-PA2: 120/240VAC input power supply, 2A at 5VDC internal bus output
• 1769-PB2: 24VDC input power supply, 2A at 5VDC bus, panel DC bus compatible
• 1769-PA4: 120/240VAC input power supply, 4A at 5VDC bus, high-density bank support