The 1746-IO12DC from Rockwell Automation provides a powerful combination of digital input and output functions. This module integrates six 24V DC inputs with six relay contact outputs. It serves as a versatile solution for the SLC 500 platform. Engineers can use this single module to both read sensor states and control actuators. This design simplifies wiring and saves valuable chassis space.
Theme Option A: Product Procurement & Buyer Guide for the 1746-IO12DC
Procurement managers must verify the module’s voltage compatibility. The 1746-IO12DC operates with an input voltage between 10 and 30 Volts DC. It also features relay outputs that handle 5 to 265V AC or 5 to 125V DC. This dual-voltage capability makes it ideal for mixed-signal environments. You can connect DC sensors directly to the six input points. Simultaneously, the six outputs can switch higher-voltage AC loads like motors.
This module draws a backplane current between 60 and 80 milliamps. It dissipates only 3.9W of heat during normal operation. These low power requirements reduce the load on your system power supply. Each output point supports a maximum current of 1.5 Amps at 120V AC. At 24V DC, each point can handle 1.2 Amps. This current rating is sufficient for driving small relays, solenoids, and indicator lights.
The 1746-IO12DC uses Normally-Open contacts for its relay outputs. This configuration ensures the outputs are off when the module loses power. It provides a fail-safe state for critical machinery. The module also offers NEMA standard ICS 2-230 noise immunity. This feature protects your signals from electrical interference in harsh factories. Always confirm your application needs this specific contact arrangement.
Installation requires placing the module in any slot except slot 0. Slot 0 is reserved for the SLC 500 processor. The module has 6 inputs and 6 points per common. This grouping simplifies the wiring of sensor banks. The operating temperature range spans from 0 to 60 °C. This allows reliable use inside most standard industrial enclosures.
Logistics & Standard Packaging Details
- One Allen-Bradley 1746-IO12DC SLC 500 Digital I/O Module
- Standard anti-static packaging for safe transport
- Product documentation and installation guide
We ship all orders using express delivery services. You can choose FedEx, UPS, or DHL for rapid shipping. This ensures your critical component arrives quickly.
Theme Option D: Expert Technical Evaluation & Performance Review
The 1746-IO12DC delivers reliable signal processing for control systems. It has a signal delay time of 8 milliseconds for standard operations. This speed is adequate for most discrete manufacturing applications. The module can handle operational shock of 30G without failing. It also withstands vibration of 2.5G at frequencies from 57 to 200Hz. This durability ensures long-term function in high-vibration machinery.
The relay outputs have a maximum apparent output power of 28VA. This limit protects the contacts from excessive inrush currents. Each output point dissipates 1.84W of power. The total module heat dissipation is 3.9W. Proper ventilation in the enclosure will manage this thermal load. The module operates within a humidity range of 5 to 95 percent. It also has a non-functional temperature range of -40 to 85 °C. This wide storage range protects the module during transport.
The module is C-UL and CSA-certified. These certifications confirm it meets strict North American safety standards. The input voltage range of 10 to 30 Volts DC provides flexibility. You can use standard 24V DC sensors without special power supplies. The six relay outputs offer a mechanical isolation barrier. This isolation protects the backplane from voltage spikes on the output side.
For signal timing, the OFF state has a delay of 45ms. The ON state has a faster delay of 35ms. This predictable timing helps engineers design accurate control logic. The module uses a backplane current of 0.08A at 5V DC. It also draws 0.06A at 24V DC from the backplane. These low currents minimize the strain on your SLC 500 power supply. The 1746-IO12DC is a robust and cost-effective I/O solution.
