| Feature | Specification |
| Model | SCHNEIDER 140CRA93100 |
| Series | Modicon Quantum |
| Module Type | Remote I/O (RIO) Drop Adapter |
| Communication | Single Cable Coaxial (S908 RIO) |
| Protocol | Modbus Plus / S908 |
| Address Range | 1 to 31 (via DIP switches) |
| Current Consumption | 600mA at 5V DC |
| Isolation | 500V DC (Coaxial to Bus) |
| Operating Temp | 0°C to +60°C |
The SCHNEIDER 140CRA93100 serves as a high-performance remote I/O drop adapter designed to facilitate communication between a Modicon Quantum head processor and distributed I/O racks. It excels in high-speed data synchronization across coaxial networks, allowing for reliable control of remote field devices while maintaining the deterministic performance required for complex industrial automation and process control architectures.
Model Comparisons
The 140CRA93100 is the standard single-channel RIO adapter, whereas the 140CRA93200 is the redundant (dual-channel) version. While the 93100 is ideal for cost-effective installations where a single coaxial cable path is sufficient, the 93200 provides a secondary path for mission-critical applications where cable breakage would cause a system shutdown. Compared to the newer 140CRA31110 (Ethernet-based RIO), the 93100 utilizes the legacy S908 coaxial system, making it a critical drop-in replacement for maintaining older Quantum plants without upgrading the entire network infrastructure to fiber or copper Ethernet.
Schneider Modicon Quantum 140CRA93100
Operating Tips
- DIP Switch Settings: Ensure the rotary or DIP switches are set to the unique drop address before powering up the rack; the Quantum CPU will not recognize the module if it shares an address with another drop.
- Termination: Always install a 75-ohm coaxial terminator on the “OUT” port of the last 140CRA93100 in the daisy chain to prevent signal reflections and intermittent “RIO COM” errors.
- Power Supply Sizing: Note that this module draws 600mA from the backplane; verify that the Quantum power supply (e.g., 140CPS series) has enough remaining capacity to support both this adapter and the local I/O modules in the same rack.
