SAIA PCD3.M6340

Core Technical Specifications

1. CPU & High-Capacity Memory Performance
   • Core Processor: High-frequency 32-bit industrial RISC multi-task microcontroller
   • User Program Flash Memory: 2 MByte large-capacity non-volatile flash storage for complex multi-segment process control logic programs
   • Retentive Data Memory: 512 KB lithium battery-backed RAM for mass process variables, high-capacity alarm event history records, multi-group setpoint parameter storage
   • Memory Backup Configuration: Replaceable high-capacity lithium backup battery module, retains all retentive data for minimum 24 months without external power supply
   • Max Supported Total I/O Points: 1023 combined digital and analog I/O points under full expansion module rack configuration
2. Dual Independent Multi-Protocol Communication Interfaces
   • Dual RJ45 10/100 Mbps Ethernet Ports (Ethernet 1 + Ethernet 2), fully independent isolated network domains, support Modbus TCP/IP, embedded HTTP web server, FTP file upload/download, SNMP network management protocols; dual Ethernet ports support redundant network connection architecture for monitoring system fault tolerance
   • Native Profibus-DP Master Interface, maximum bus transmission rate 12 Mbps, capable of driving up to 124 Profibus-DP slave field devices on single Profibus trunk bus line
   • 2 x configurable RS232/RS485 serial terminal communication ports, compatible with Modbus RTU, S-Bus proprietary bus, ASCII free custom communication protocols
   • Front-panel USB Type-B programming port for PG5 engineering software program download, online real-time variable monitoring, CPU firmware version upgrade
   • Front-panel micro-SD high-capacity memory card slot for long-term continuous process data logging, alarm record archiving, full control program backup storage
3. Electrical Power Supply Parameters
   • Rated Input Supply Voltage: 24 V DC smoothed industrial regulated power
   • Operating Voltage Tolerance Range: 19.2 V DC ~ 30 V DC
   • Maximum Total Power Consumption of CPU Base Unit: 9.6 W
4. Environmental & Mechanical Physical Specifications
   • Normal Operating Ambient Temperature: 0 °C ~ +55 °C (standard natural convection cabinet mounting layout)
   • Restricted Operating Temperature for Fully Loaded Multi-Module Rack: 0 °C ~ +40 °C (additional cabinet forced air cooling fan required)
   • Storage Transportation Temperature Range: -40 °C ~ +85 °C
   • Relative Ambient Humidity: 5% ~ 95%, non-condensing environment only
   • Front Panel Protection Class: IP20 (indoor closed electrical cabinet installation mandatory)
   • Physical Overall Dimensions (Width × Height × Depth): 67.3 mm × 125.8 mm × 85 mm
   • Net Weight of Single CPU Unit: 0.36 kg
   • Global Industrial Safety Certifications: CE, UL, cULus, GL marine industry certification

Function Features

1. Full complete IEC 61131-3 international standard programming support via SAIA official PG5 engineering software, all five standard industrial PLC programming languages fully supported for developing large-scale multi-task complex process control logic
2. Built-in high-performance Profibus-DP master communication stack, independently control entire Profibus field bus network, connect and exchange real-time data with up to 124 third-party Profibus slave sensors, actuators, remote I/O modules and auxiliary PLC controllers without external Profibus master adapter modules
3. Dual independent isolated Ethernet network ports support redundant monitoring network architecture; when primary Ethernet communication link fails, CPU automatically switches all upper SCADA monitoring system data transmission to secondary Ethernet port within 100 ms without control logic operation interruption
4. Embedded dual-channel Ethernet web server function; two independent web access domains can be configured separately for production operation monitoring and equipment maintenance debugging access authority isolation management
5. High-capacity multi-loop PID closed-loop control core, support up to 128 independent PID regulation loops for synchronized multi-variable analog process control (temperature, pressure, flow, liquid level, pH value regulation)
6. Multi-task parallel operation system architecture; user control logic programs can be divided into multiple independent priority task segments, high-priority safety interlock tasks execute with absolute real-time priority to guarantee critical safety equipment rapid response action
7. Comprehensive full-system hardware self-diagnosis and fault recording system; real-time continuous monitoring of CPU internal core temperature, 24 V DC power supply input voltage, S-Bus expansion bus communication link state, dual Ethernet port link fault, Profibus-DP master bus slave device disconnection fault, serial communication bus error, with dedicated color-coded front panel LED indicator light group for rapid visual fault location; all fault event details automatically stored to retentive memory and SD card log file with precise time stamp recording
8. High-capacity micro-SD card data logging function, supports continuous unattended long-term storage of real-time process operation data, alarm trigger event records, equipment running cumulative time statistics, full control program backup files for post-failure data analysis and system program recovery
9. Full hot-swap modular expansion compatibility; all connected PCD3 series digital/analog I/O expansion modules support power-on hot replacement operation without shutting down entire CPU automation station and interrupting field equipment control logic execution