Yokogawa AIP502

Part Number: AIP502

Model Type: AS S9352AT-03

Manufacturer(s) : Yokogawa

Model(s) : Yokogawa Centum CS - Centum VP

Dimensions: 6" x 3" x 10" (15 x 8 x 25 cm)

Weight: 0.59 kg

Additional Information: AIP502 Module, Style S1, V-Net Coupler

CENTUM VP FCS is available for dual-redundancy. This FCS consists of dual-redundant processor modules, Vnet/IP coupler, and power modules. For adding FIO node unit is added, install ESB-bus coupler module or ER bus interface module. Both modules can also be dual-redundant. (For dual-redundant FCS, ESB bus interface modules need to be dual-redundant.) Even if one module becomes defective, the control can be switched without interruption.

Each processor module has two MPU. MPU1 and MPU2 mounted on each module perform the same control computations and the results are compared by a comparator for each calculation. When the results of both MPU are the same, the module is assumed to be normal

and the results are transmitted to main memory devices and bus interface modules. The main memory devices with ECC (error-correcting code) correct transient reversed-bit errors.

If the results from MPU1 and MPU2 are not the same the comparator assumes it “calculation abnormal”, the active processor module is switched to another one.

WatchDog Timer detects abnormal functions of the active processor module. In case abnormal functions are detected, the active processor module would be switched to another processor module.

The standby processor module performing the same computations as the active module, switching to active status without interruption is possible.

The processor module with calculation error performs self-diagnosis; if the hardware is not assumed abnormal, the error is assumed transient and the module status recovers from “abnormal” to “standby” Vnet/IP interface is an interface available for dual-redundancy mounted on CPU and connected to a dual-redundant control bus.

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