Overview
The Allen-Bradley 1746-IO12DC is a digital input/output combination module designed for SLC 500 programmable logic controllers. This module features six 24 Volt DC input points and six 100 to 120 AC relay contact output points, combining both input and output functionality in a single-slot form factor. The module integrates directly into the SLC 500 backplane, making it ideal for applications requiring compact, efficient control without additional chassis real estate.
Key Features
- Six 24 Volt DC input points and six 100 to 120 AC relay contact output points
- K1 to K6 relays with CSA and C-UL certification
- NEMA standard ICS 2-230 noise immunity
- Single-slot SLC 500 chassis mounting
- LED status indicators for inputs and outputs
- Normally-open relay contact outputs
Technical Specifications
- Input Channels: 6 DC input points at 24 Volts
- Output Channels: 6 AC relay contact output points at 100-120V
- Input Operating Voltage: 10 to 30 Volts
- Output Operating Voltage: 5 to 265 Volts AC between 47 to 63 Hertz, or 5 to 125 Volts DC between 47 to 53 Hertz
- Continuous Current Output: 8 Amperes total module
- Maximum Output Per Point: 1.5 Ampere at 120V AC and 1.2A at 24V DC
- Operating Temperature: 0 to 60 °C (32 to 140 °F) with 5–95% humidity
- Storage Temperature: -40–85 °C (-40–185 °F)
- Power Dissipation: 3.9W maximum thermal dissipation
- Vibration Rating: 2.5G at 57–200Hz operational
- Mounting: Single-slot SLC 500 chassis
- Certifications: CSA, C-UL, NEMA ICS 2-230
Typical Applications
Industrial control applications requiring interfacing with both digital inputs and relay outputs. Common uses include:
- Process control and monitoring systems
- Machine automation with discrete sensor and actuator interfacing
- Manufacturing equipment control
- Field device switching and signal acquisition
- Retrofit and upgrade applications in existing SLC 500 systems
Compatibility & Replacements
Compatible With
- SLC 500 programmable logic controllers (all standard chassis slots)
- Allen-Bradley SLC 500 family systems
- RS Logix 500 programming software
- 24V DC sensor networks
- 100–120V AC control circuits
Replaces / Drop-In Replacement For
The 1746-IO12DC can be used as a direct replacement for legacy 1746-IO12DC units in existing SLC 500 systems. Verify compatibility with your system integrator before ordering to ensure proper firmware and configuration support.
Works With
- RS Logix 500 programming environment
- Allen-Bradley SLC 500 architecture
- Standard 24V DC input sensors and switches
- 120V AC relay output circuits
- Industrial Ethernet networks via communication modules
