PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1746-OV32 is a Current Sinking DC Output Module for SLC 500 systems. This high-density module provides 32 sinking outputs arranged in two groups of 16 points. It operates within a voltage range of 5 to 50V DC with a nominal 24V DC rating. Each channel supports continuous current of 0.50A at 30 degrees Celsius and 0.25A at 60 degrees Celsius. Continuous total module current capacity is 8.0A across the operating temperature range.
The module occupies a single slot in an SLC 500 local or remote chassis. Backplane current draw is 190 mA at 5V DC, with zero draw at 24V DC. It provides backplane electrical isolation rated at 1500V AC for one minute. The hardware does not include electronic protection, so external electronic fusing is recommended. Wiring connects via a 40-pin female connector or an optional 1492 wiring system.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Category | PLCs |
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| Product Line | SLC 500 |
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| GTIN | 10662468092910 |
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| Weight | 1.19 lbs (0.54 kg) |
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| Module Type | Digital DC Sinking output |
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| No. of output | 32; Sinking output |
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| Nominal Output Voltage | 24 VDC |
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| Output Voltage range | 5-50 VDC |
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| Output Current at 30 Deg. C. | 0.50A |
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| Output Current at 60 Deg. C. | 0.25A |
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| Signal Delay, ON transition | 0.1 ms |
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| Signal Delay, OFF Transition | 1.0 ms |
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| Backplane Current | 0.190A |
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| Thermal Dissipation per channel | 0.172 Watts |
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| Thermal Dissipation, min. | 0.95 Watts |
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| Thermal Dissipation, total. | 6.45 Watts |
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| Electronic Protection | No |
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| Voltage Range | 5-50 Volts DC |
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| Outputs | 32 |
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| Current/Outputs | 0.5-0.25 amps |
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| Current/Module | 8 amps |
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| Backplane Current (5 Volts) | 190 milliamps |
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| Applications | High Current |
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| Step Response | 60 milliseconds in, 2.5 milliseconds out |
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| UPC | 10662468092910 |
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| Output Type | Current Sinking DC (Transistor) |
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| Voltage Category | 24V DC |
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| Operating Output Voltage Range | 5 to 50V DC |
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| Number of Output Points | 32 |
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| Points per Common | 16 |
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| Continuous Current per Point | 0.50A at 30°C (86°F); 0.25A at 60°C (140°F) |
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| Continuous Current per Module | 8.0A at 0 to 60°C (32 to 140°F) |
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| On-State Voltage Drop (max.) | 1.2V at 0.5A |
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| Off-State Leakage Current (max.) | 1 mA |
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| Load Current (min.) | 1 mA |
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| Signal Delay – ON (max., resistive load) | 0.1 ms |
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| Signal Delay – OFF (max., resistive load) | 1.0 ms |
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| Backplane Current Draw (5V DC) | 190 mA |
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| Backplane Current Draw (24V DC) | 0 mA |
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| Thermal Dissipation (max.) | 4.80W |
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| Watts per Point | 0.078W |
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| Operating Temperature | 0 to 60°C (32 to 140°F) |
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| Compatible Platform | Allen-Bradley SLC 500 |
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TECHNICAL INFORMATION
Features
- Provides 32 sinking discrete transistor outputs across two groups of 16 points.
- Operates across a voltage range of 5 to 50V DC with 24V DC nominal.
- Delivers 0.50A continuous current per point at 30°C and 0.25A at 60°C.
- Supports a continuous total current capacity of 8.0A per module.
- Presents turn-on signal delay of 0.1 ms and turn-off delay of 1.0 ms.
- Draws 190 mA at 5V DC backplane power while occupying one chassis slot.
- Features optical isolation rated at 1500V AC for one minute to the backplane.
TECHNICAL INFORMATION
Applications
- High-density, low-current DC output switching applications in SLC 500 chassis.
- High-current DC switching up to 8.0A total continuous module capacity.
- Local and remote discrete DC sinking output control.
TECHNICAL INFORMATION
Connections / Interfaces
- Default 40-pin female connector with crimp type pins using the 1746-NC3 connector.
- Compatible with Allen-Bradley 1492 wiring system utilizing 1492-CABLExx and 1492-IFM40xx terminal blocks.
TECHNICAL INFORMATION
Installation Guidelines
- Install the module into one slot of an SLC 500 chassis.
- Connect field wiring using the 40-pin female connector or 1492 cable interface.
- Provide external electronic fusing to protect output channels against overload conditions.
- Maintain operating temperature between 0 and 60 degrees Celsius.
TECHNICAL INFORMATION
Configuration Guidelines
- Group sinking field wiring across the two isolated 16-point circuits.
- Verify channel surge currents remain within 1.0A for 10 ms duration.
- Ensure repeat intervals of one second at 30°C or two seconds at 60°C.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley SLC 500 local and remote chassis.
- Compatible with 1746-NC3 40-pin female connector and crimp pins.
- Compatible with Allen-Bradley 1492 wiring systems using 1492-CABLExx and 1492-IFM40xx.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley SLC 500 local and remote chassis. Compatible with 1746-NC3 40-pin female connector and crimp pins. Compatible with Allen-Bradley 1492 wiring systems using 1492-CABLExx and 1492-IFM40xx.
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
What is the continuous current rating for the 1746-OV32 module?
Continuous current is 0.50A per point at 30°C and 0.25A per point at 60°C. Total module current is 8.0A.
Does the Allen-Bradley 1746-OV32 provide internal electronic protection?
No. The 1746-OV32 lacks internal electronic protection. Rockwell Automation recommends implementing external fusing for field wiring.
What is the reference price for the 1746-OV32 module?
Observed market pricing indicates approximately $129.00 USD for refurbished units. These figures represent indicative reference pricing only and are not a final quotation.
