YOKOGAWA CP401-10

Technical Specifications

• Core Processor: PowerPC 604e, 1 GHz main frequency
• System Memory: 512 MB ECC SDRAM
• Local Storage: 4 GB Industrial CompactFlash Card
• Power Supply: 24 VDC ±10%, Max input current 2 A
• Power Consumption: ≤18 W under full load
• Control Capacity: Max 256 PID control loops, 4096 I/O signal points
• Control Cycle Options: 100 ms / 200 ms / 500 ms / 1 s configurable
• Communication Interfaces: 2 × 10/100 Mbps Ethernet (Vnet/IP), 1 × RS-232C maintenance port
• Isolation Grade: 1 kVrms channel-to-power isolation
• Physical Dimension: 100 mm (W) × 240 mm (H) × 125 mm (D)
• Net Weight: 0.5 kg
• Protection Class: IP20 (when installed in standard DCS rack cabinet)
• Operating Temperature: 0 ℃ ~ +55 ℃, non-condensing
• Storage Temperature: -20 ℃ ~ +70 ℃
• Humidity Range: 10% ~ 90% RH, no dew formation
• Vibration Resistance: 10–150 Hz, 0.5 g acceleration compliant with IEC 60068-2-6

Function Features

1. Supports full set of industrial PID algorithms including self-tuning, cascade control, feedforward compensation, anti-windup limit
2. Built-in real-time operating system with deterministic millisecond-level response for safety interlock logic
3. Complete hardware self-diagnosis: power supply detection, memory error check, communication link fault alarm, I/O channel abnormality report
4. Native 1:1 hot redundant CPU backup, seamless switch without process interruption
5. Vnet/IP high-speed control bus, station internal data refresh cycle ≤50 ms
6. Offline program download, online parameter modification without station shutdown
7. Historical trend data cache, event log storage for process traceability
8. Multi-protocol compatibility: Modbus TCP, Modbus RTU for third-party device interconnection

Performance Parameters

• Arithmetic computing capacity: 1200 MIPS floating-point operation
• Redundant switch time: ≤100 ms without signal loss
• Max expandable I/O unit quantity: 16 pieces per CPU station
• Single I/O unit maximum channel count: 32 points
• Data retention period: 10 years for CF card stored configuration data
• Mean Time Between Failures (MTBF): 120,000 hours under rated operating environment

Material Composition

• Outer housing: Flame-retardant ABS engineering plastic, UL94 V-0 fire rating
• Internal circuit substrate: FR-4 high-temperature resistant PCB with gold-plated contact pins
• Cooling structure: Passive convection heat sink made of aluminum alloy
• Connector terminals: Copper alloy with nickel plating, anti-oxidation coating

Structural Characteristics

• Standard 8-slot DCS rack slide-in modular structure, front-side pluggable without dismounting wiring terminals
• Front panel equipped with LED status indicator array: RUN, ERROR, COM, REDUNDANT status lights
• Rear-side dedicated high-speed backplane bus connector for I/O unit data transmission
• External CF card slot accessible from module front for program backup and restore
• Dual Ethernet RJ45 ports located on front panel for network wiring convenience

Working Principle

Advantage Highlights

1. Industrial-grade ECC memory eliminates data corruption caused by electromagnetic interference
2. Passive heat dissipation design without fan, zero mechanical wear, low maintenance cost
3. Ultra-long MTBF adapts to 24/7 continuous production operation
4. Fully isolated signal circuit avoids cross-channel interference in high-EMI industrial sites
5. Unified CENTUM VP system compatibility, seamless matching with all Yokogawa I/O modules
6. Compact rack layout saves cabinet installation space
7. Complete global technical support and spare parts supply network

Applicable Industries

Installation Requirements

1. Install inside standard Yokogawa CENTUM VP rack cabinet, DIN rail fixed with locking buckle
2. Maintain ≥20 mm vertical clearance above and below module for convection heat dissipation
3. Cabinet internal air circulation required, ambient temperature strictly controlled within 0–55 ℃
4. Separate power cable and signal wiring to reduce electromagnetic crosstalk
5. Earth cabinet grounding terminal with resistance ≤4 Ω
6. Do not install adjacent to high-power frequency converter or high-voltage contactor

Usage Precautions

1. Power off rack before plugging/unplugging module to prevent backplane bus short circuit
2. Only use official Yokogawa CF storage cards; third-party flash media causes data loss risk
3. Avoid mechanical impact on module front panel during maintenance
4. Do not expose module to corrosive gas, oil mist or conductive dust environment
5. Calibrate redundant synchronization bus every 12 months for long-term stable backup
6. Do not modify internal circuit components; disassembly voids factory warranty