PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-OG16 is a Current Sinking TTL Output Module for the SLC 500 control platform. This module provides 16 digital output points operating across a 4.5 to 5.5V DC range. It draws 0.180A from the 5V DC backplane and requires 0.0A from the 24V DC backplane. Each point handles up to 24 mA continuous load current.
This module utilizes an inverted TTL output logic architecture for external equipment interfacing. Standard ladder logic programs require a NOT instruction to achieve True equals High status. Switching response times include a 0.25 ms turn-on delay and a 0.5 ms turn-off delay. Wiring terminates directly through a standard removable terminal block assembly.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Output Type | Sinking TTL (5V DC) |
|---|
| Operating Output Voltage Range | 4.5 to 5.5V DC (50 mV peak-to-peak ripple maximum) |
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| Number of Output Points | 16 |
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| Points per Common | 16 |
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| Continuous Current per Point (max.) | 24 mA |
|---|
| Backplane Current Draw (5V DC) | 0.180A |
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| Backplane Current Draw (24V DC) | 0.0A |
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| Signal Delay – ON (max., resistive load) | 0.25 ms |
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| Signal Delay – OFF (max., resistive load) | 0.5 ms |
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| Off-State Leakage Current (max.) | 0.1 mA |
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| Load Current (min.) | 0.15 mA |
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| Operating Temperature | 0 to 60°C (32 to 140°F) |
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| Relative Humidity | 5 to 95% (non-condensing) |
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| Terminal Block | Removable Terminal Block (RTB) |
|---|
| Compatible Platform | Allen-Bradley SLC 500 |
|---|
| Logic Type Note | TTL outputs are inverted; NOT instruction required for standard True = High ladder logic |
|---|
TECHNICAL INFORMATION
Features
- Provides 16 sinking TTL output channels arranged with 16 points per common.
- Operates with a 4.5 to 5.5V DC output voltage range.
- Maximum continuous load current rating is 24 mA per individual point.
- Backplane current consumption measures 0.180A at 5V DC and 0.0A at 24V DC.
- Turn-on signal delay is 0.25 ms under resistive load conditions.
- Turn-off signal delay is 0.5 ms under resistive load conditions.
- Equipped with a removable terminal block for simplified wiring access.
TECHNICAL INFORMATION
Connections / Interfaces
- Field wiring connects through an Allen-Bradley Removable Terminal Block (RTB).
- All 16 output channels share a single common return.
TECHNICAL INFORMATION
Installation Guidelines
- Insert the module into any available I/O slot of an SLC 500 chassis.
- Ensure ambient operating temperature stays within 0 to 60°C.
- Maintain relative non-condensing humidity between 5 and 95 percent.
TECHNICAL INFORMATION
Configuration Guidelines
- Apply a ladder logic NOT instruction to account for inverted TTL output behavior.
- Confirm that the 5V DC power source limits ripple to 50 mV peak-to-peak maximum.
- Ensure external loads meet the minimum load requirement of 0.15 mA.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley SLC 500 controller chassis and backplanes.
- Directly interfaces with standard 5V DC sinking TTL logic devices.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley SLC 500 controller chassis and backplanes. Directly interfaces with standard 5V DC sinking TTL logic devices.
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
How does ladder logic programming handle the inverted outputs on the 1746-OG16?
The module inverts TTL outputs. Standard True equals High programming requires an internal NOT instruction.
What is the maximum output current supported per point on the 1746-OG16?
Each output point supports a maximum continuous load current of 24 mA.
What is the market reference price for the Allen-Bradley 1746-OG16?
Market observations show reference pricing around $139.00 USD for refurbished units. Indicative market reference only; not a final quotation.
