Description
The Honeywell 2MLI-D24A is a 32-point digital input module designed for industrial automation applications, particularly within Honeywell’s MasterLogic and ControlEdge PLC systems. This module accepts 24 V DC input signals from field devices such as sensors, switches, and push buttons, enabling seamless integration and monitoring of discrete signals in process and factory automation environments. Its compact and robust design ensures reliable performance in harsh industrial conditions.
Key technical features of the 2MLI-D24A include:
- 32 discrete input channels, suitable for 24 V DC input signals.
- Photo-coupler isolation for each input channel to prevent interference and enhance signal integrity.
- Rated input voltage of 24 V DC with an operating voltage range of approximately 20.4 to 28.8 V DC (ripple < 5%).
- Input current around 4 mA per channel.
- Operating temperature range from -40 °C to +70 °C, suitable for extreme industrial environments.
- Compact physical dimensions roughly 2.2 cm x 12.4 cm x 12.6 cm and a lightweight design (~0.1 kg).
| Parameter | Value |
|---|---|
| Model | 2MLI-D24A |
| Brand | Honeywell |
| Type | Digital Input Module |
| Number of Inputs | 32 discrete channels |
| Rated Input Voltage | 24 V DC |
| Operating Voltage Range | 20.4 to 28.8 V DC (ripple < 5%) |
| Input Current | ~4 mA per channel |
| Isolation | Photo-coupler isolation per channel |
| Operating Temperature | -40 °C to +70 °C |
| Dimensions (LxWxH) | Approx. 2.2 cm x 12.4 cm x 12.6 cm |
| Weight | Approx. 0.1 kg |
- 2MLI-D24A
The 2MLI-D24A module is compatible with a broad range of Honeywell control systems, offering reliable and efficient discrete signal monitoring essential for automated process control.
Installation involves mounting in a suitable PLC rack compatible with Honeywell MasterLogic or ControlEdge platforms. Proper wiring, grounding, and shielding practices are advised to ensure high signal integrity and noise immunity. Routine checks on input signals and module diagnostics support operational reliability.






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