CP99A*A Yokogawa Field Control CPU Module

Yokogawa CP99A*A CENTUM Field Control CPU Modules

Yokogawa CP99A*A CENTUM Field Control CPU Modules

التوفر: 20 متوفر في المخزون

Yokogawa CP99A*A CENTUM Field Control CPU Module The Yokogawa CP99A*A, also cataloged as the CP99A Field Control CPU Module, operates...

رمز المنتج: CP99A*A

Manufacturer: Yokogawa
Product No.: CP99A*A
Product Type: CPU Processors
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 350g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

Yokogawa CP99A*A CENTUM Field Control CPU Module

The Yokogawa CP99A*A, also cataloged as the CP99A Field Control CPU Module, operates as a dedicated hardware component for deterministic process control algorithm execution and bus communication across Yokogawa CENTUM systems.

Hardware Specifications

Parameter	Specification
Model	CP99A*A
Brand	Yokogawa
Origin	Japan
Weight	0.35 kg
Dimensions	130 mm x 100 mm x 30 mm
Operating Temp	0 to +55 deg C
Power Consumption	24 VDC nominal
Processor Architecture	Proprietary RISC CPU
Control Cycle Time	Configurable (10 ms to 100 ms)
Onboard Memory	16 MB RAM, 64 MB flash
System Capacity	Up to 50000 tags per controller
Communication Interfaces	Vnet/IP, ESB bus, RIO bus
System Redundancy	1:1 dual-redundant CPU architecture supported
Hardware Diagnostics	Built-in self-test, watchdog timer

4-20 mA HART Loop Protocol and Channel-to-Channel Isolation

The processor module processes continuous and batch control logic, coordinating real-time data flow from remote I/O nodes via ESB bus and RIO bus interfaces. To preserve signal integrity when handling field variables, the architecture routes incoming analog data through I/O cards featuring channel-to-channel isolation. This configuration blocks common-mode noise and ground potential differences across loop field circuits, allowing stable pass-through transmission of 4-20 mA HART loop protocol diagnostic signals to central operator stations.

Frequently Asked Questions

Q: How does the CPU module execute hot-standby switchover in 1:1 dual-redundant configurations?

A: When two CP99A*A modules are installed in a dual-redundant rack, tracking memory continually synchronizes process data between the active and standby units. If the active processor detects a hardware fault via its watchdog timer or built-in self-test, control transfers to the standby module within one scan cycle without bumping control outputs.

Q: What interface protocols are utilized to exchange data with field I/O racks?

A: The module utilizes dedicated ESB bus or RIO bus communication links for local and optical remote I/O expansion chassis, while interfacing with upper-level control network nodes via the Vnet/IP real-time network protocol.

Field Installation Guidelines

Turn off main cabinet power before inserting the CPU module into the designated Field Control Station (FCS) processor slot. Slide the card along the card cage guides until the backplane connectors fully engage, then tighten the top and bottom retaining screws to ensure solid frame grounding. Verify that all ESB bus cable connectors are seated and latched firmly to prevent communication packet loss. Connect the cabinet protective earth (PE) busbar to a single-point earth ground using a short copper strap before re-energizing the system.

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