The 1769-IM12 (1769-IM12) is a high-voltage discrete AC input module designed for Allen-Bradley CompactLogix and MicroLogix 1500 systems. It provides 12 high-voltage input channels (200/240V AC), allowing the controller to safely interface with heavy-duty field devices such as large motor starter auxiliary contacts, high-voltage limit switches, and push buttons.
A key architectural feature of the 1769-IM12 (1769-IM12) is its single-group configuration with a shared internal common. This design significantly reduces wiring complexity and terminal block requirements in high-density industrial control panels. Built for rugged environments, it features robust dielectric isolation between the input side and the backplane bus, ensuring the processor is protected from high-voltage transients. The module is fully compatible with CompactLogix 5370 L1, L2, and L3 controllers and can be integrated into distributed I/O systems via the 1769-AENTR adapter.
The technical parameters below outline the performance and electrical limits of the 1769-IM12:
Manufacturer: Allen-Bradley / Rockwell Automation
Model Number: 1769-IM12
Product Type: Digital AC Input Module
Number of Inputs: 12 Inputs (1 Group of 12)
Voltage Category: 200/240V AC
Operating Voltage Range: 159–265V AC
Input Frequency: 47–63 Hz
On-State Voltage (Min): 159V AC
Off-State Voltage (Max): 40V AC
On-State Current (Min): 5 mA @ 159V AC
Off-State Current (Max): 2.5 mA
Input Impedance: 18.2 kΩ nominal @ 240V AC
Propagation Delay: 20 ms (Off to On and On to Off)
Backplane Current Draw: 100 mA @ 5.1V DC
Heat Dissipation: 3.65 Watts maximum
Dielectric Isolation: 1836V AC / 2596V DC for 1 second (Input-to-Bus)
Power Supply Distance Rating: 8 slots
Operating Temperature: 0 to 60 °C (32 to 140 °F)
Dimensions (H x W x D): 118 × 35 × 87 mm
Weight: 0.30 kg (0.66 lbs)
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