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Description
The Allen-Bradley 1746-OV8 is a high-performance digital DC output module engineered for the SLC 500 programmable controller platform. This unit provides eight discrete sinking outputs, specifically designed to handle high-current requirements for field devices operating within the 10V to 50V DC range. By controlling the negative side of the load circuit, this module ensures efficient switching by connecting the load directly to the common rail during the energized state.
Features
- Eight isolated sinking output channels grouped together for efficient wiring.
- Rapid switching performance with an ON-signal delay of 0.1 ms and an OFF-signal delay of 1.0 ms.
- Wide operating voltage range of 10-50V DC, supporting diverse industrial load requirements.
- Integrated status indicators for local monitoring of output channel states.
- Robust SLC 500 backplane interface requiring 135 mA at 5V DC.
Technical Specifications
| Brand |
Allen-Bradley |
| Series |
SLC 500 |
| Module Type |
Digital DC Output (Sinking) |
| Number of Outputs |
8 |
| Operating Voltage |
10-50V DC |
| Backplane Current (5V) |
135 mA |
| Backplane Current (24V) |
0 mA |
| On-Signal Delay |
0.1 ms |
| Off-Signal Delay |
1.0 ms |
| Operating Temperature |
0 to 60 degC |
| Storage Temperature |
-40 to 85 degC |
| Relative Humidity |
5% to 95% (non-condensing) |
Installation Guidelines
- Ensure the SLC 500 chassis power is disconnected before installing or removing the module to prevent electrical damage.
- Verify that the module is firmly seated into the chassis slot and secured using the top and bottom mounting screws.
- Use appropriate wire gauges for field connections and ensure all wiring is routed away from high-voltage AC lines to minimize electromagnetic interference.
- Maintain adequate ventilation within the enclosure to keep ambient temperatures within the specified 0 to 60 degC operating range.
- Follow standard ESD protection procedures when handling the module to prevent circuit board damage.
Compliance and Certifications
The 1746-OV8 is designed for compliance with global industrial standards, including UL, C-UL, CE, and C-Tick. It is rated for use in Class I, Division 2, Groups A, B, C, and D hazardous locations.
FAQ
What does it mean that this is a sinking module?
A sinking output module connects the load to the common (negative) side of the power supply when the output is active. Ensure your field devices are compatible with sinking-type logic before installation.
Can this module handle 48V DC loads?
Yes, the 1746-OV8 supports a voltage range of 10V to 50V DC, making it suitable for standard 24V or 48V DC applications.
