- Sixteen 10–60V DC sourcing outputs for 1771 I/O systems
- Documented Series C current, surge, fuse, and chassis requirements
- Compatible with specified 1771-WH-family field wiring arms
Allen-Bradley 1771-OBD is a sixteen-point DC output module for the legacy 1771 I/O platform.
The official Series C specification defines the electrical limits, chassis generation, field wiring arms, mechanical keying, and environmental conditions required for installation.
Replacement work should preserve the exact module series, wiring schedule, addressing, field-power grouping, load suppression, and documented machine safety response.
Availability, condition, price, and shipping time for 1771-OBD are confirmed during quotation.
Allen-Bradley 1771-OBD Digital Output Module 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.
- Verify field voltage and per-point current before connection
- Account for module total current and short-duration surge
- Confirm backplane-current and heat-dissipation capacity
- Use an approved 1771-WH-family wiring arm
- Match the field-supply grouping and terminal schedule
- Provide suitable suppression for inductive loads
- Confirm Series B-or-later chassis and mechanical keying
- Verify slot addressing and controller output image
- Test every output under a controlled commissioning plan
- Discrete control of compatible DC solenoids and interposing relays
- PLC-5 machine-sequencing outputs for indicators and contactor coils
- Sourcing-output control of rated DC actuators in 1771 I/O systems