Configured for high-availability process control in CENTUM VP and ProSafe-RS network platforms, the YOKOGAWA CP401-11 (CP401 CPU Processor) provides direct physical and electrical execution of safety-critical control logic.
| Parameter | Specification |
|---|---|
| Model | CP401-11 |
| Brand | YOKOGAWA |
| Origin | Japan |
| Weight | 0.6 kg |
| Dimensions | 5.1 x 20.3 x 15.2 cm |
| Operating Temp | 0 deg C to +55 deg C |
| Power Consumption | 5 W to 10 W |
| Architecture | Dual-redundant 32-bit RISC |
| Control Network | Vnet/IP (1 Gbps) |
The module utilizes a "Pair & Spare" dual-microprocessor architecture to execute continuous cross-checks of computational results, minimizing the probability of undetected hardware failure. This design maintains IEC 61508 SIL3 certification for safety-instrumented systems (SIS). The hardware implements robust galvanic isolation to prevent fault propagation across the redundant bus interface, ensuring that any localized electrical disturbance does not compromise the fail-safe state execution required for emergency shutdown and high-risk control processes.
Q: Does the CP401-11 support hot-swapping in a redundant pair?
A: Yes, when deployed in a 1:1 dual-redundant configuration, the modules support hot-replacement. However, maintenance personnel must verify the status of the standby controller via the system management interface before extracting the active module to ensure seamless control transition.
Q: Is the firmware on the CP401-11 compatible with non-SIL3 control stations?
A: This module is specifically optimized for SIL3-rated ProSafe-RS and CENTUM VP safety applications. Firmware compatibility is strictly tied to the system release version; utilize the system's management software to perform integrity verification before attempting any firmware alignment.
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