Description
Product Name: 1746-IO12DC Allen Bradley Input module
Product details:
The Allen-Bradley 1746-IO12DC is a Digital Input/Output (I/O) Combination Module designed for use with the SLC 500 Programmable Logic Controller (PLC) system. It combines both input and output functionalities on a single module, saving chassis space.
📝 Product Specifications (Product Parameters)
| Parameter | Detail |
| Product Line | SLC 500 |
| Module Type | Digital I/O Combination Module |
| I/O Count | 12 total points (6 Inputs, 6 Outputs) |
| Inputs | 6 points, DC Voltage (Typically 24V DC) |
| Input Voltage Range | 10–30 Volts DC |
| Outputs | 6 points, Relay Contact Outputs |
| Output Voltage Range | 5–265V AC or 5–125V DC (Relay contacts) |
| Maximum Current/Point | 1.5A at 120V AC; 1.2A at 24V DC (for outputs) |
| Backplane Current Draw | 0.08 A at 5V DC; 0.06 A at 24V DC |
| Operating Temperature | 0 to 60 °C (32 to 140 °F) |
| Signal Delay (Input) | Approximately 8 milliseconds (ON/OFF) |
| Signal Delay (Output) | Approximately 45 ms (OFF), 35 ms (ON) |
| Mounting | Any slot in a 1746 SLC 500 Chassis (except slot 0) |
⭐ Product Advantages
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Space Saving: Being a combination module, it integrates both inputs and outputs into a single slot, which conserves valuable chassis space in the PLC rack.
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Versatile Output: The use of Relay Contact Outputs allows the module to switch both AC and DC loads over a very wide voltage range (up to 265V AC or 125V DC). This flexibility is useful for interfacing with various field devices.
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High Current Capacity: The relay outputs can handle a relatively high current (up to 1.5A) per point, allowing direct control of small loads, solenoids, or pilot lights without external interposing relays.
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Cost-Effective: For applications with a small number of I/O points, a combination module can be more cost-effective than purchasing separate input and output modules.
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Robustness: Designed for industrial environments, it features NEMA standard noise immunity and is built to withstand operational shock and vibration.
⚠️ Important Considerations (Notes for Use)
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Relay Life: Since the outputs use mechanical relays, they have a finite mechanical and electrical life. Excessive cycling or switching high-current/inductive loads will shorten the relay lifespan.
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Output Switching Speed: Relay outputs are generally slower than solid-state (transistor) outputs. The signal delay times (around 35-45 ms) should be considered for time-critical applications.
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Load Type: The maximum current rating changes based on the voltage and type of load (resistive vs. inductive). Consult the official datasheet for derating curves, especially when switching inductive loads like motors or solenoids.
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Wiring: Proper grounding and shielding practices are essential in industrial environments to maintain signal integrity and avoid noise interference, especially with relay contacts switching high voltage.
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Fuse Protection: While the module offers some protection, external fusing for the load is highly recommended to protect the module and the field device in case of a short circuit.
🏭 Product Applications (Product Application)
The 1746-IO12DC is well-suited for a variety of industrial control tasks, including:
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General Machine Control: Controlling motors, solenoid valves, contactors, and indicating lights in small to medium-sized machines.
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Process Monitoring: Reading the status of simple DC sensors (e.g., proximity switches, limit switches) and controlling low-power AC/DC actuators.
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Building Automation: Interfacing with HVAC systems, security devices, or lighting controls where a mix of DC inputs and versatile AC/DC switching outputs is required.
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Retrofit and Upgrades: Often used in upgrading older control panels or integrating new equipment into existing SLC 500 systems due to its flexibility with output voltage.
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Small Control Cabinets: Ideal when panel space is limited and a moderate number of both digital inputs and outputs are needed.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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