Digital I/O Module | Bachmann | DIO280 24VDC 0.5A

Overview

The Bachmann DIO280 is a high-density digital input/output module designed for advanced industrial automation. Supporting 32–48 digital inputs and outputs, it features counters, PWM generation, and configurable interrupt channels. The DIO280 combines compact design with robust diagnostics and flexible configuration, making it ideal for complex automation networks that require precise control and monitoring.

Specifications

Inputs

• Quantity: 32–48 digital inputs

• High-Level Voltage: 15–34 V DC

• Low-Level Voltage: 0–5 V DC

• Input Delay: Standard 600 µs, adjustable 10 µs to 270 ms

• Internal Resistance: 8 kΩ

• Status Indicator: Green LED per channel

• Interrupt Inputs: 8, configurable as counter or interrupt inputs

Counters

• Number of Counters: Up to 4

• Resolution: 32-bit

• Operation Modes: Event counter, incremental encoder, gate time, period length, frequency measurement

• Encoder Support: Incremental encoders (A/B channels), single-channel pulse encoders

• Signal Evaluation: 1/2/4 times edge evaluation or pulse direction mode

• Maximum Input Frequency: Single channel: 50 kHz; Dual channel (A/B): 20 kHz

Outputs

• Quantity: 32–48 digital outputs

• Voltage Range: 18–34 V DC

• Maximum Current per Channel: 0.5 A

• Total Current: 24 A

• Status Indicator: Green LED per channel

• Switching Frequency: Up to 1 kHz

• Inductive Load Switching: 1.15 H

• PWM Channels: Same as outputs, 0–100% duty cycle, 13-bit resolution

• Frequency: 1 Hz to 1 kHz

• Valve Hold Time: Configurable 0–2 s

Power and Protection

• Internal Electrical Isolation: 500 V

• Internal Current Consumption (5 V): 180 mA

• External Supply: 24 V DC with polarity reversal protection and sensor energy recovery

Environmental Conditions

• Operating Temperature: −30 °C to +60 °C

• Storage Temperature: −40 °C to +60 °C

• Operating Humidity: 5–95% (with or without condensation)

• Storage Humidity: 5–95% (with condensation)

• Pollution Degree: 2 (IEC 60664-1)

Physical Characteristics

• Dimensions: 10.8 × 5.7 × 12.1 cm (4.3" × 2.3" × 4.8")

• Weight: 0.4 kg (14.4 oz)

Features

• High-Density Channels: 32–48 digital inputs and outputs for large-scale control

• Advanced Counter Support: Up to 4 configurable counters for event or frequency measurement

• PWM Functionality: Adjustable duty cycle and valve hold time for precision output control

• Flexible Interrupts: 8 configurable channels for fast event detection

• Integrated Diagnostics: Real-time monitoring and fault detection

• Industrial-Grade Design: Vibration-resistant and suitable for harsh environments

• Compact Installation: Optimized footprint for DIN rail or panel mounting

Applications

The DIO280 is suitable for factory automation, process control, distributed I/O networks, and other industrial systems. It provides precise monitoring and control of relays, actuators, and sensors in high-density configurations.

FAQ

Q: How many input and output channels are available?
A: The DIO280 supports 32–48 inputs and 32–48 outputs, configurable as needed.

Q: Can it handle counter or encoder inputs?
A: Yes, up to 4 channels can be configured for counters or incremental encoder inputs with flexible signal evaluation.

Q: What is the PWM capability of the module?
A: Each output supports PWM with 13-bit resolution, frequency from 1 Hz to 1 kHz, and configurable valve hold time up to 2 seconds.

Q: Is it suitable for harsh industrial environments?
A: Yes, it operates from −30 °C to +60 °C, is vibration-resistant, and supports wide humidity ranges.