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Bachmann DI0248 Digital Input/Output Module
1. Product Overview
The Bachmann DI0248 is a high-density digital input/output (I/O) module tailored for industrial automation systems, specializing in the reliable acquisition of digital signals and control of digital actuators. Originating from Austria, this module is designed to streamline the integration of on-site digital devices (e.g., limit switches, proximity sensors, relays, solenoid valves) into control systems, eliminating the need for multiple low-channel modules and optimizing cabinet space.
With a compact DIN rail-mounted design, the DI0248 fits seamlessly into standard industrial control cabinets, making it suitable for both small-scale machine control (e.g., single conveyors) and large-scale production line integration. It works in tandem with Bachmann processors (e.g., MX220, SLC284) to form a cohesive digital control solution, ensuring real-time responsiveness in harsh industrial environments.
2. Core Technical Features
- Channel Configuration: Equipped with 24 digital input channels and 24 digital output channels (total 48 channels), providing high-density digital signal processing. Inputs support 24 V DC (PNP/NPN configurable); outputs offer 24 V DC drive capability, with 0.5 A maximum current per channel and 8 A maximum current per 8-channel group.
- Input Signal Characteristics: Digital inputs feature configurable filter delays (0.1 ms - 100 ms) to suppress electrical noise from motors or inverters, avoiding false triggers. Input threshold: ON (11-30 V DC), OFF (≤5 V DC), ensuring compatibility with most industrial digital sensors.
- Output Protection Mechanisms: Outputs integrate overcurrent protection (auto-recovery after fault clearance) and short-circuit protection, preventing module damage from faulty actuators (e.g., shorted solenoid valves). Reverse polarity protection (≤-30 V DC) safeguards against wiring errors.
- Isolation & EMC Performance: 500 V DC galvanic isolation between input/output groups and system, preventing cross-signal interference. Complies with IEC 61000-6-2 for EMC immunity, ensuring stable operation in electrically noisy environments (e.g., near industrial inverters).
- Environmental Adaptability: Operating temperature range: -30℃ to +60℃; storage temperature: -40℃ to +85℃. Resists vibration (IEC 60068-2-6: 10-500 Hz, 10 g acceleration) and humidity (5-95% non-condensing), suitable for harsh industrial sites.
3. Key Advantages
- High-Density & Space-Saving: 48 channels (24 in/24 out) in a single compact module reduce the number of modules needed in control cabinets by 50% compared to 16-channel alternatives, saving installation space and lowering hardware costs.
- Flexible Configuration & Easy Integration: Configurable input filters and output modes (sinking/sourcing) adapt to diverse digital devices. Works with Bachmann’s Solution Center engineering tool, supporting PLCopen function blocks for quick parameter setup (e.g., filter delay, output current limits) without custom programming.
- Reliable Protection & Low Maintenance: Built-in overcurrent, short-circuit, and reverse polarity protection minimize downtime caused by wiring errors or actuator faults. 8-channel group current limiting prevents overloading, extending module lifespan.
- Real-Time Responsiveness: Input filter delay as low as 0.1 ms ensures fast detection of high-speed digital signals (e.g., encoder pulses for motor speed monitoring), meeting the real-time control needs of high-speed production lines.
4. Typical Applications
- Manufacturing Automation: In automotive assembly lines, uses 24 inputs to collect signals from proximity sensors (part presence) and limit switches (robotic arm position); 24 outputs control conveyor belt relays, solenoid valves for grippers, and indicator lights. Configurable filters suppress noise from welding robots, ensuring accurate signal detection.
- Material Handling & Logistics: In warehouse automated guided vehicle (AGV) systems, inputs receive signals from obstacle sensors and position encoders; outputs control AGV drive motors (via relays) and braking solenoids. Overcurrent protection prevents damage from motor startup surges.
- Packaging Machinery: In food packaging lines, inputs monitor film tension sensors and seal temperature switches; outputs control packaging film feed motors, sealers, and reject mechanisms for defective products. High channel density simplifies integration of multiple sensors/actuators in compact machinery.
- Power Auxiliary Systems: In solar power plants, inputs collect status signals from inverter contactors and circuit breakers; outputs control fan relays for inverter cooling and alarm lights. Wide temperature adaptability withstands outdoor environmental fluctuations.
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