Product Summary
The Allen-Bradley 1746-OB32 is a high-density SLC 500 digital output module. It provides thirty-two 24VDC sourcing channels for controlling discrete devices. Engineers use this module to drive solenoids, pilot lamps, and motor starters. It delivers reliable performance within a compact form factor.
Theme A: Product Procurement & Buyer Guide
Understanding Your Application Needs
The 1746-OB32 module excels in high-current DC control applications. You must verify that your field devices operate within a 5-50VDC range. Each output point delivers a nominal current of 0.25A at 60 degrees Celsius. The module’s total current capacity reaches 8A across all channels.
Key Specifications for Selection
Procurement managers should note the backplane current draw of 190 milliamps. This module fits any SLC 500 chassis slot except slot zero. The 1746-OB32 features sixteen points per common group. This configuration simplifies wiring for grouped output devices.
Compatibility and Certifications
This module holds a UL Listing for hazardous locations. It meets Class I, Division 2, Groups A, B, C, D standards. The 1746-OB32 also carries C-UL certification for Canadian markets. These approvals ensure safe operation in demanding industrial environments.
Signal Performance for Critical Control
The module offers fast signal response for precise control. Its turn-on delay is only 0.1 ms. The turn-off delay measures 1.0 ms. This speed allows the module to handle rapid cycling loads effectively.
Using Interposing Relays for AC Loads
You can use this module with AC output devices. Simply connect a 24VDC relay coil to the module output. Then wire the relay’s contacts to control your AC load. This method provides electrical isolation for the module.
Protecting Your Investment in Old Systems
The 1746-OB32 offers noise immunity per NEMA ICS 2-230 standards. For older systems with electrical noise, use interposing relays. This practice isolates the module from ground loops. It prevents unwanted behavior from poor wiring.
Logistics & Standard Packaging Details
- One Allen-Bradley 1746-OB32 SLC 500 Output Module
- One Removable Terminal Block (RTB)
- One Octal Door Label for panel identification
- One color-coded module bar with part number
We ship all orders via express delivery. Our partners include FedEx, UPS, and DHL. This ensures fast and reliable delivery to your facility.
