Bachmann DI232 Digital Input Module

The Bachmann electronic DI232 Digital Input Module is a high-density industrial signal acquisition unit designed for reliable monitoring of digital field signals in automation and control systems.This digital input module provides 32 input channels, allowing efficient collection of a large number of field signals in compact control systems. It is designed to operate with a 24 V DC supply, ensuring compatibility with standard industrial control voltages and seamless integration into PLC-based and modular automation platforms.The DI232 is optimized for fast and reliable signal recognition, enabling consistent detection of switching states from sensors, switches, and other digital field devices.With its high channel capacity, stable 24 V DC operation, and industrial-grade signal processing capability, the Bachmann DI232 Digital Input Module is well suited for machine automation, process control, and large-scale I/O expansion systems requiring efficient and reliable digital input handling.

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Model: DI232
Product Type: Digital Input Module
System Platform: M1 Controller System
Number of Inputs: 32 digital inputs
Input Voltage: 24 V DC nominal (18–34 V DC range)
Input Logic: EN 61131-2 Type 1 current-sinking inputs
Input Current: ~3–3.5 mA per channel (typical implementation)
Electrical Isolation: Galvanic isolation between field and system side
Channel Grouping: 2 groups (1–16 / 17–32)
Response Time: Filtered input delay ~3 ms (typical)
Mounting Type: M1 backplane / rack module
Diagnostics: LED status indication per channel
Operating Function: Digital signal acquisition and interrupt-based event detection

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• High-Density Digital Input Monitoring: The DI232 provides a high-density solution for industrial monitoring, offering either 16 or 32 digital inputs within a single compact module.
• Visual Feedback: Dedicated front-panel LEDs provide real-time verification of signal states for each input.
• Standardized Logic and Universal Compatibility: Designed for global industrial compatibility, the DI232 utilizes current-sinking logic inputs that fully comply with the EN 61132 Type 1 standard.
• Time-Critical Interrupt Processing: For applications requiring immediate reaction to external events, the DI232 features configurable interrupt inputs. Specifically, inputs 1 and 2 can be designated as high-priority interrupt triggers, enabling the DI232 to signal the CPU instantly when critical process thresholds are met.
• Robust Galvanic Isolation and Diagnostics: The DI232 is engineered with comprehensive galvanic isolation to protect the sensitive internal electronics of the PLC from external electrical surges and ground loops.

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Q1: What is the main function of the DI232 module?
A1: It is used to read and process 32 digital input signals from field devices.

Q2: How many channels does it support?
A2: It supports 32 digital input channels.

Q3: What voltage does it use?
A3: It operates on 24 V DC industrial input signals.

Q4: Does it support signal isolation?
A4: Yes, it provides galvanic isolation between field inputs and system electronics.

Q5: Can it detect fast signal changes?
A5: Yes, certain inputs can be configured as interrupt inputs for event-driven processing.

Q6: What system is it used with?
A6: It is designed for the Bachmann M1 controller platform.

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