This digital output module drives actuators and indicators in Modicon M340 control systems. The Schneider ASB820008 provides eight independent transistor outputs with short-circuit protection for reliable field switching. Its compact form factor suits high-density I/O configurations and simplifies cabinet layout planning.
Key Technical Specifications
| Parameter | Details |
|---|---|
| Model | Schneider ASB820008 |
| Product Type | Digital Output Module |
| Dimensions (W x H x D) | 56 mm x 140 mm x 120 mm |
| Weight | 0.32 kg |
| Number of Outputs | 8 channels (transistor, source type) |
| Output Voltage Rating | 24 V DC nominal |
| Output Current per Channel | 0.5 A continuous (resistive load) |
| Total Output Current | 4 A per module maximum |
| Short-Circuit Protection | Yes (electronic limiting, auto-recovery) |
| Output Response Time | 0.5 ms typical |
| Isolation Voltage | 1,500 V AC (between outputs and bus) |
| Bus Interface | M340 backplane connector |
| Power Consumption | 60 mA at 5 V DC (from backplane) |
| Operating Temperature | 0 °C to +60 °C |
| Protection Class | IP20 |
Output Architecture and Load Handling
The Schneider ASB820008 delivers 0.5 A per channel for controlling solenoids, indicator lamps, and relay coils. Its electronic short-circuit protection limits fault current and automatically restores normal operation after the fault clears. A 0.5 ms response time enables precise timing applications such as counting and positioning sequences. Additionally, the module accommodates resistive and inductive loads with appropriate external suppression diodes.
Mechanical Design and Installation
This output module occupies one slot in the M340 rack and shares the standard 56 mm width of the platform. Its 0.32 kg weight facilitates secure mounting without additional support brackets. Removable spring-cage terminal blocks accept wires from 0.2 mm² to 2.5 mm², streamlining field wiring tasks. Green LEDs on the front panel display each channel’s active state for immediate visual verification.
Power Consumption and Thermal Management
The Schneider ASB820008 consumes 60 mA from the 5 V DC backplane supply, ensuring minimal power draw in multi-module systems. The module dissipates heat efficiently through its ventilated housing, maintaining stable operation across the 0 °C to 60 °C range. The total output current limitation of 4 A per module prevents excessive thermal buildup in dense cabinet installations.
System Compatibility and Application Scope
This output module communicates with the M340 CPU via the dedicated backplane bus, guaranteeing deterministic update cycles. It supports both DC motor starters and pneumatic valve manifolds through its flexible sourcing output configuration. Consequently, the Schneider ASB820008 serves packaging machinery, material handling conveyors, and assembly line automation effectively.
Diagnostics and Operational Safety
Built-in diagnostic functions detect open-load conditions and overcurrent events for each channel independently. The module reports these faults to the CPU, enabling rapid maintenance response and minimizing downtime. Front-panel status indicators supplement this diagnostic capability with real-time channel feedback.
Details
| Weight | 0.32 kg |
|---|---|
| Dimensions | 56 × 140 × 120 mm |
Reviews
There are no reviews yet.