Introduction — Redundancy Backbone for Modicon PLC Systems
The Schneider Electric 140CHS21000 is a high‑availability Industrial Control Module designed for use in Modicon Quantum and compatible PLC automation systems. This module enables dual‑controller redundancy, ensuring continuous control logic execution and uninterrupted process operation even in the event of a primary controller failure. Built for critical applications where downtime is costly, the 140CHS21000 enhances system resilience, supports seamless failover, and maintains synchronized operation between primary and standby CPUs.
Technical Specifications
| Specification | Details |
|---|---|
| Model | 140CHS21000 |
| Module Type | Industrial Control / Redundancy Module |
| Compatible Systems | Schneider Electric Modicon Quantum and rack‑based PLC platforms |
| Function | Provides fault‑tolerant control and automatic switchover between redundant controllers |
| Redundancy Mode | Full hot standby/controller synchronization |
| Communication Interface | Backplane communication bus / redundancy link |
| Switchover Time | Typically < 10 ms (system dependent) |
| Operating Temperature | 0 °C to +60 °C |
| Mounting | Backplane‑mounted within PLC rack |
| Dimensions (W×H×D) | 140 mm × 105 mm × 45 mm |
| Weight | ~0.9 kg |
| Material | Industrial‑grade PCB and reinforced housing |
| Compliance | CE, UL, and industrial EMC/safety standards |
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