Yokogawa CP451-10 – Processor Module

Product Short Description

Product overview
The CP451-10 is a 32-bit RISC-based central-processor module for Yokogawa CENTUM VP distributed control systems. It executes control algorithms, handles data acquisition and alarm management, and acts as a gateway between field I/O and the operator/engineering network .

Processor: 32-bit RISC, 100 MHz clock
Memory: 2 MB RAM, 2 GB Flash for firmware and historical data
Capacity: up to 2,048 control loops and 8,192 I/O points
Update cycle: 10 ms for real-time control
Power supply: 24 V DC (20.4 – 26.4 V DC range), 20 W consumption
Isolation: 2.5 kV channel-to-system, 250 V channel-to-channel
Operating temperature: –20 °C to +60 °C
Humidity: 5 % – 95 % RH non-condensing
Shock & vibration: 15 g half-sine 11 ms, 0.05 g RMS 10–500 Hz
Dimensions: 152 mm × 51 mm × 203 mm (6.0 × 2.0 × 8.0 in)
Weight: 2 kg (4.4 lb)
Protection rating: IP20 housing, conformal-coated option for harsher environments

Mixed-signal design: handles 16 analog inputs (4–20 mA, ±16 µA accuracy), 32 digital inputs/outputs (24 V DC, 100 mA per channel)
Communication stack: dual redundant Ethernet (FTE), Modbus RTU/TCP, Foundation Fieldbus, serial RS-232/RS-485
Redundancy support: hot-standby CPU pairs with automatic failover < 1 s
Hot-swap capability: module replacement without process shutdown
Diagnostics: open-circuit detection, overload protection, LED status indicators

Process industries: petrochemical, refining, chemical batch reactors for temperature, pressure and flow control
Power generation: turbine control, generator monitoring, distributed energy plants
Water & wastewater: pump stations, water-treatment dosing systems
Discrete manufacturing: automotive assembly lines, multi-axis motion control and interlocking