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The 1746-OG16 is an SLC 500 digital output module that provides 16 points of TTL-level sinking outputs. Designed for low-voltage logic interfacing, this module requires an external 5V DC user power supply to drive field-side devices and operates within a narrow voltage range of 4.5V to 5.5V DC.
TTL Logic Compatibility
Rapid Signal Response
1500V Optical Isolation
This module features high-speed switching with a maximum signal delay of 0.25 ms for "off-to-on" transitions, ensuring rapid response for logic-sensitive applications. It provides 1500V DC optical isolation between the SLC 500 backplane and field-side circuitry, protecting the processor from electrical noise while supporting a maximum output current of 24 mA per point.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen-Bradley 1746-OG16 Digital DC Output Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Electronics Manufacturing
Used for direct interfacing with TTL-level logic circuits and semiconductor testing equipment. The module provides a sinking output configuration with a 4.5 to 5.5V DC operating range, ensuring compatibility with standard 5V electronic components.
Laboratory Automation
Applied in precision instrumentation for controlling high-speed digital switches and data logging triggers. It features a rapid signal delay of 0.25 ms for "off-to-on" transitions, facilitating synchronized operations in sensitive research environments.
Telecommunications Equipment
Deployed in the testing and assembly of telecommunication switching gear and rack-mounted hardware. It utilizes 1500V DC optical isolation to protect the processor logic from electrical noise while driving low-power signal indicators and relays.
Medical Instrumentation
Implemented in diagnostic imaging systems and automated laboratory analyzers to interface with onboard microcontrollers. The 16-point density per slot allows for a compact footprint when integrating multiple TTL-compatible control signals.
Aviation Testing
Used in ground support equipment to simulate digital signals for avionics logic verification. The module requires an external 5V DC user power supply to maintain stable voltage levels for precision low-voltage signal emulation.
Robotic Cell Control
Applied in high-speed sorting and pick-and-place systems requiring low-latency response to optical sensors. It provides a maximum output current of 24 mA per point, suitable for driving high-impedance logic gates and TTL-compatible pilot devices.
Shielding and Grounding Requirements：To limit the effects of electromagnetic interference (EMI), use shielded twisted-pair cable for all RTD or resistance inputs. The shield must be grounded at only one end, typically at the SLC chassis ground, to prevent ground loops.
Sensor Failure Diagnostics：The 1746-NR4 provides continuous diagnostics for open-circuit and short-circuit conditions. When a failure is detected, the module sets the corresponding error bit in the channel status word, which can be configured to drive the input data to a safe state (upscale or downscale).
Input Filter Frequency Selection：The module's input filter frequency (50 Hz, 60 Hz, 250 Hz, or 500 Hz) determines the channel update time and common mode rejection. You must select a filter frequency that matches your AC line frequency to provide the highest noise rejection.
What is the operating voltage range and logic type for the 1746-OG16 module?
The 1746-OG16 is a TTL sinking output module that operates within a voltage range of 4.5 to 5.5V DC, designed to interface with TTL-level logic circuits.
What is the maximum output current per point and per module for the 1746-OG16?
The maximum output current is 24 mA per point at 0.4V DC, with a total maximum module current capacity of 384 mA.
Does the 1746-OG16 require an external power supply for its operation?
Yes, the module requires an external 5V DC user power supply connected to the terminal block to power the output side of the optical isolators and the field devices.
What are the maximum signal delay times for the 1746-OG16 outputs?
The maximum signal delay is 0.25 ms for the "off-to-on" transition and 0.50 ms for the "on-to-off" transition under rated load.
What is the backplane current consumption for the 1746-OG16?
The 1746-OG16 consumes a maximum of 0.180 A from the 5V DC backplane and 0 A from the 24V DC backplane.
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