Product Short Description
1. Technical Specifications
• Architecture: 32-bit RISC processor, 600 MHz ARM Cortex-A8 core
• Memory:
– 128 KB battery-backed program/data RAM
– 32 MB SDRAM system memory
– 4 GB onboard flash for firmware and historical data
• I/O Capacity:
– 16 universal analog inputs (4–20 mA, 0–10 V, TC, RTD, mV)
– 8 analog outputs (4–20 mA, 0–10 V)
– 32 digital inputs (24 VDC)
– 32 digital outputs (relay or transistor)
• Resolution: 16-bit A/D, 14-bit D/A
Description
• Accuracy: ±0.05 % of span for analog inputs, ±0.1 % for outputs
• Scan Time: 100 ms for 256 I/O points
• Power Supply: 24 VDC (18–31.2 V), 15 W max
• Isolation: 1 500 VAC channel-to-channel, 2 500 VAC channel-to-ground
• Operating Temperature: –40 °C to +70 °C
• Humidity: 5 % – 95 % RH non-condensing
• Dimensions: 96 mm × 96 mm × 115 mm (DIN cut-out)
• Weight: 1.0 kg
• Mounting: DIN-rail or panel; IP65 front when installed with gasket
• Scan Time: 100 ms for 256 I/O points
• Power Supply: 24 VDC (18–31.2 V), 15 W max
• Isolation: 1 500 VAC channel-to-channel, 2 500 VAC channel-to-ground
• Operating Temperature: –40 °C to +70 °C
• Humidity: 5 % – 95 % RH non-condensing
• Dimensions: 96 mm × 96 mm × 115 mm (DIN cut-out)
• Weight: 1.0 kg
• Mounting: DIN-rail or panel; IP65 front when installed with gasket
2. Functional Highlights
• Real-time control loops: PID, cascade, ratio, feed-forward, override
• Auto-tuning and adaptive gain scheduling
• Built-in function blocks: math, logic, timers, counters, sequence control
• Redundant Ethernet 10/100 Mbps and RS-485/RS-232 interfaces
• Protocols: Modbus RTU/TCP, PROFINET, EtherNet/IP, HART pass-through
• Web-based configuration and diagnostics via embedded HTTP server
• SD card slot for program backup, recipe storage, and firmware updates
• LED status indicators for power, run, comm, fault, and I/O state
• Watchdog timer and fail-safe output fallback
• Real-time control loops: PID, cascade, ratio, feed-forward, override
• Auto-tuning and adaptive gain scheduling
• Built-in function blocks: math, logic, timers, counters, sequence control
• Redundant Ethernet 10/100 Mbps and RS-485/RS-232 interfaces
• Protocols: Modbus RTU/TCP, PROFINET, EtherNet/IP, HART pass-through
• Web-based configuration and diagnostics via embedded HTTP server
• SD card slot for program backup, recipe storage, and firmware updates
• LED status indicators for power, run, comm, fault, and I/O state
• Watchdog timer and fail-safe output fallback
3. Application Scenarios
• Oil & gas wellhead control, pipeline monitoring
• Chemical batch reactors and continuous distillation columns
• Power plant auxiliary systems (boiler feedwater, cooling water)
• Pharmaceutical clean-room environmental control
• Food & beverage pasteurization and CIP/SIP sequences
• Water & wastewater treatment dosing and flow regulation
• HVAC central plants and building automation
• Oil & gas wellhead control, pipeline monitoring
• Chemical batch reactors and continuous distillation columns
• Power plant auxiliary systems (boiler feedwater, cooling water)
• Pharmaceutical clean-room environmental control
• Food & beverage pasteurization and CIP/SIP sequences
• Water & wastewater treatment dosing and flow regulation
• HVAC central plants and building automation
4. Installation & Maintenance
• Removable spring-cage terminals for all I/O, torque 0.5 N·m
• Front USB port for service laptop connection (no cabinet door opening)
• Battery life: > 10 years data retention; field-replaceable without tools
• Firmware upgrade via Ethernet or SD card; dual-image rollback protection
• Comprehensive self-test routine on power-up and on demand
• Yokogawa FieldMate asset management software support
• Removable spring-cage terminals for all I/O, torque 0.5 N·m
• Front USB port for service laptop connection (no cabinet door opening)
• Battery life: > 10 years data retention; field-replaceable without tools
• Firmware upgrade via Ethernet or SD card; dual-image rollback protection
• Comprehensive self-test routine on power-up and on demand
• Yokogawa FieldMate asset management software support
5. Ordering Package
• CP451-51 processor module
• Removable terminal blocks (input, output, power, comm)
• Panel mounting gasket and screws
• Quick-start guide (English, Chinese, Japanese)
• Calibration certificate and SIL conformity declaration
• 12-month factory warranty
• CP451-51 processor module
• Removable terminal blocks (input, output, power, comm)
• Panel mounting gasket and screws
• Quick-start guide (English, Chinese, Japanese)
• Calibration certificate and SIL conformity declaration
• 12-month factory warranty
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