The Automation Direct D3-08B-1 is an 8-slot chassis designed for the D3 series (DirectLogic 305) programmable logic controller system. It features a built-in power supply that accepts universal AC input (110-220V AC) and provides stable 24V DC output to the CPU and all installed I/O modules. This chassis serves as the mechanical and electrical backbone of the PLC system, enabling high-speed communication between modules through the passive backplane.
Key Features
8 I/O module slots for flexible system expansion
Integrated power supply – 110/220V AC input, 24V DC output
Rugged metal construction for industrial environments
LED status indicators for power and operation
Easy DIN-rail or panel mounting
Compatibility
Accepts D3-330, D3-340, D3-350 CPU modules
Supports all D3 series discrete and analog I/O modules
Backplane communication up to 1 ms scan rate
Replacement for older D3-08B-0 models
Technical Specifications
| Parameter | Value |
|---|---|
| Model | D3-08B-1 |
| Slot Count | 8 slots (one reserved for CPU) |
| Input Voltage | 110-220V AC (85-264V AC), 50/60 Hz |
| Output Power | 24V DC, 1.5A (max) for I/O bus |
| Power Consumption | 40 VA typical |
| Backplane Type | Passive, high-speed parallel bus |
| Dimensions (WxHxD) | 250 x 112 x 85 mm |
Applications
The D3-08B-1 is used in factory automation, packaging machinery, conveyor control, and building management systems. Its robust power supply and modular design make it suitable for systems requiring up to 128 I/O points with mixed analog and digital signals.
