The Yokogawa AFV30D-S41151/HKU, also cataloged as the AFV30D-S41151 Field Control Unit, operates as a dedicated hardware component for high-availability regulatory and sequence control within CENTUM VP platforms. Configured for duplexed operation, this unit provides direct physical execution of logic processing, utilizing a dual-CPU architecture to ensure deterministic control execution and seamless redundancy management for critical industrial processes.
| Model | Description |
|---|---|
| AFV30D | Base Model: Duplexed Field Control Unit (FCS) |
| -S41151 | Standard Configuration: Vnet/IP Interface & FIO Support |
| /HKU | Ordering Option: Specialized Hardware Finish/Region Specification |
| Parameter | Specification |
|---|---|
| Model | AFV30D-S41151/HKU |
| Brand | Yokogawa |
| Origin | China |
| Weight | 0.5 kg |
| Dimensions | 130 mm x 140 mm x 32 mm |
| Operating Temp | 0 deg C to +55 deg C |
| Power Consumption | ~10 W |
| Control Capacity | Up to 10,000 function blocks |
The AFV30D-S41151/HKU maintains deterministic communication via redundant Vnet/IP Ethernet ports, isolating critical control traffic from standard network overhead. The controller architecture utilizes high-speed industrial processors to manage up to 1,000 control loops with a minimum 1 ms scan cycle. To maintain process stability, the unit enforces strict channel-to-channel isolation on associated I/O modules, preventing common-mode noise from entering the control bus. Integrated cold junction compensation (CJC) protocols are supported for high-precision temperature loop monitoring, while the internal battery-backed SRAM ensures data retention during transient power loss events.
Q: Does the unit support hot-swapping while the duplexed pair is active?
A: Yes, the AFV30D-S41151/HKU allows for the online replacement of a single CPU module. The redundant partner continues to execute the control strategy, and the replacement unit will automatically synchronize its memory once inserted.
Q: How is the Vnet/IP redundancy maintained during communication faults?
A: The controller continuously validates the health of both Ethernet ports. In the event of a link failure or packet loss on the primary interface, the control logic executes an instantaneous failover to the secondary port without interrupting the scan cycle.
Q: Is the LFS1700 control function permanently embedded?
A: The LFS1700 control function is a logical execution environment hosted by the CPU. The application strategy is loaded into the module’s flash memory, which remains active provided the hardware configuration matches the intended control architecture.
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