Description
The Allen-Bradley 1746-IO12DC is a compact, single-slot combination I/O module engineered for the SLC 500 control platform. This module provides a space-efficient solution for automation systems by consolidating six 24V DC sinking inputs and six independent relay contact outputs into one unit, reducing the total rack space required for mixed-signal applications.
Features
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Hybrid I/O Configuration: Combines 6 sinking DC inputs and 6 relay outputs for versatile field device interfacing.
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Flexible Relay Switching: Relay outputs support a wide range of AC and DC load voltages, enabling the control of diverse equipment like solenoid valves, indicators, and motor starters.
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Wide Input Range: Compatible with standard 24V DC industrial control signals (10-30V DC operating range).
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Space-Optimized: Designed as a single-slot module to maximize density in SLC 500 chassis environments.
Applications
This module is well-suited for small-to-medium scale industrial control tasks where limited I/O count is required. Typical applications include machine control, conveyor systems, and distributed I/O nodes where a mix of sensor inputs and actuator outputs must be managed within a constrained footprint.
Technical Specifications
| Model |
1746-IO12DC |
| Inputs |
6 (24V DC Sinking) |
| Outputs |
6 (Relay Contacts) |
| Input Voltage |
10 to 30V DC |
| Output Voltage (AC) |
5 to 265V AC (47-63 Hz) |
| Output Voltage (DC) |
5 to 125V DC |
| Input Signal Delay |
8 ms (Nominal) |
| Output Signal Delay |
35 ms (ON) / 45 ms (OFF) |
| Backplane Current (5V) |
80 mA |
| Backplane Current (24V) |
60 mA |
| Operating Temperature |
0 to 60 degC |
Installation Guidelines
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Power Status: Always disconnect backplane power before inserting or removing the module from the SLC 500 chassis to prevent electrical damage.
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Mounting: Ensure the module is fully seated in the chassis slot and the locking tabs are engaged to maintain proper backplane connection.
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Wiring: Route input and output wiring through separate conduits where possible to minimize electromagnetic interference (EMI) from high-power circuits.
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Environment: Maintain adequate ventilation within the enclosure to ensure the ambient temperature remains within the 0 to 60 degC operating range.
FAQ
Can I use this module with any SLC 500 processor?
Yes, the 1746-IO12DC is compatible with standard Allen-Bradley SLC 500 chassis and processor configurations supporting the 1746 I/O line.
Are the relay outputs isolated?
The relay outputs are independent contacts, allowing for flexibility in switching different voltage levels, provided they remain within the specified AC/DC current and voltage ratings.
