48-Channel Digital I/O Module DIO248 Bachmann M1 Controller Unit

Product Overview

The Bachmann DIO248 is a high-density digital interface module engineered to provide extensive I/O capacity within the M1 automation environment. Featuring a total of 48 hardware channels, this unit is designed to streamline control cabinet layouts by consolidating a high volume of signal points into a single-slot footprint. The module utilizes a hybrid architecture consisting of 32 fixed digital inputs and 16 freely programmable "mixed" channels. These mixed ports can be software-configured as either inputs or outputs, offering engineers the flexibility to adapt the hardware to specific sensor and actuator ratios without changing physical modules.

This module is not merely a signal gateway; it incorporates advanced functional logic including 32-bit hardware counters, frequency measurement capabilities, and Pulse Width Modulation (PWM) outputs. These integrated features allow the DIO248 to perform complex tasks such as high-speed part counting and proportional valve control directly at the interface level, offloading processing demand from the main CPU.

Technical Architecture and Durability

The DIO248 is built for the rigorous electrical demands of heavy industry, operating on a nominal 24V DC supply with a wide tolerance range (18V to 34V DC). Each of the 16 output channels can deliver up to 0.5A, sufficient for driving industrial relays, solenoids, and signaling devices. For enhanced system reliability, the module features sophisticated protection circuitry, including short-circuit proofing and reverse polarity protection, alongside continuous monitoring of the external supply voltage.

Front-panel diagnostics are handled via a dedicated LED array, providing instantaneous status feedback for every channel to simplify field-side troubleshooting. The rugged mechanical construction is optimized for high-vibration environments, making it a preferred choice for maritime automation, wind energy, and complex manufacturing machinery. Its design eliminates the need for external potential distribution rails, leading to a more compact and vibration-resistant wiring solution.

Technical Specifications

• Manufacturer: Bachmann Electronic

• Model Number: DIO248

• Total I/O Count: 48 Channels

• Fixed Inputs: 32 Digital Channels

• Configurable Ports: 16 Mixed Channels (Input or Output)

• Logic Voltage: 24V DC (Range: 18V to 34V DC)

• Output Rating: 0.5A per channel (Short-circuit protected)

• Signal Functions: 32-bit Counter, PWM, Frequency Measurement

• Connection Interface: High-density terminal front connector

• Net Weight: 0.38 kg

• Unit Dimensions: 11.0 x 5.3 x 11.8 cm

• System Series: Bachmann M1 Automation

Industrial Use Cases

• High-Speed Counting: Utilizing 32-bit hardware counters for precise velocity sensing and production throughput tracking.

• Actuator Control: Deploying PWM outputs for the fine regulation of hydraulic or pneumatic proportional valves.

• Sensor Logic: Aggregating large clusters of inductive, capacitive, or optical sensors in material handling systems.

• Time-Critical Signaling: Leveraging interrupt-capable input channels for immediate response to safety-related process signals.