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Yokogawa F3NC61-0N Compact PLC CPU Module
Product Introduction:
The F3NC61-0N is a compact programmable logic controller CPU module from Yokogawa Electric Corporation’s F3NC Series, designed for small-to-medium scale automation applications. It serves as the central processing unit of the F3NC PLC system, executing user programs, managing I/O data, and handling communication tasks. The 0N suffix indicates this is a base model without built-in network/Ethernet functionality, intended for standalone control applications where advanced networking is not required.
Detailed content
Technical Specifications:
| Parameter | Specification |
|---|---|
| I/O Points | 61 points (32 digital inputs + 29 digital outputs) |
| Program Capacity | Approximately 8,000 steps |
| Program Memory | RAM + EEPROM backup |
| Communication Port | RS-422 (built-in), supports Modbus RTU protocol |
| Network Function | None (0N = base model, no Ethernet/IP) |
| Power Supply Voltage | 24V DC (±10%) |
| Power Consumption | Approximately 2.5W |
| CPU Scan Speed | Basic instruction: ~0.55μs/step |
| Input Specifications | 24V DC, optocoupler isolated, ~5mA/point, response time ~10ms (filter adjustable) |
| Output Specifications | Relay output (contactless), 2A/point, 240V AC or 30V DC, response time ~10ms |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -20°C to +70°C |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Installation Method | DIN rail mounting (35mm standard rail) |
| Protection Rating | IP20 (front panel) |
Material Composition:
- Front Panel: PC (Polycarbonate) engineering plastic
- Housing: Flame-retardant ABS resin
- Terminals: Phosphor bronze with nickel plating
Structural Features:
- Compact module design conforming to standard PLC module dimensions
- Top-mounted terminal block for rapid wiring
- Front panel LED indicators: RUN, ERROR, BATT
- Bottom DIN rail snap-in mounting clips
Working Principle:
The F3NC61-0N operates on a cyclic scan mechanism consisting of three phases: input sampling → program execution → output refresh. The CPU reads field signal states from input modules, executes user-written ladder logic/instruction list programs, and outputs computation results to output modules to drive external actuators. The complete scan cycle ranges from several milliseconds to tens of milliseconds, ensuring real-time control response.
Functional Features:
- Supports multiple programming languages: Ladder Diagram (LD), Instruction List (IL), Function Block Diagram (FBD)
- Built-in Real-Time Clock (RTC) for scheduled control
- Supports high-speed counter input (up to 10kHz)
- Built-in EEPROM for program retention during power loss
Advantages & Highlights:
- Extremely high cost-performance ratio, suitable for cost-sensitive projects
- Compact footprint, saves control cabinet space
- High reliability, MTBF exceeds 100,000 hours
- Easy maintenance, supports online program modification
Applicable Industries:
- Food and beverage packaging machinery
- Small OEM equipment manufacturing
- Simple sequential control applications
- Building automation (basic HVAC control)
Installation Requirements:
- Mount on DIN rail, ensure rail is properly grounded
- Power wiring: use 2.5mm² or larger copper conductors
- I/O wiring: use 0.75mm² to 1.5mm² conductors
- Maintain minimum 200mm separation from high-power cables to avoid EMI
Usage Precautions:
- Never insert/remove I/O modules while power is ON
- Check battery voltage regularly; replace EEPROM backup battery (model: F3NC-BAT) immediately when voltage drops below 2.0V
- Ensure adequate ventilation in the installation environment to prevent dust accumulation
- Do not use in environments with corrosive gases
