Digital guide
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Yokogawa C3UL30066R
Working Principle: The C3UL30066R is a remote I/O module that connects to the C3000 series CPU via the Synchronous Serial Link (SSL) or EtherNet/IP network. It acquires digital/analog field signals, converts them to data packets, and transmits them to the CPU for logic processing. The CPU sends output commands back to the module, which drives field actuators (relays, solenoid valves, etc.). The module operates with deterministic scan timing synchronized to the CPU cycle.
Detailed content
Model Breakdown:
| Code | Meaning |
|---|---|
| C3 | C3000 Series (CompactLogic PLC Family) |
| U | Universal (Applicable to multiple CPU types) |
| L | Logic (PLC Module — not motion/safety) |
| 30 | CPU Compatibility: C3030 / C3060 Series CPU |
| 066R | Module Type: 64-Point DC Input Module (Sinking/Sourcing) |
Technical Specifications:
| Parameter | Specification |
|---|---|
| Module Type | 64-Point DC Input Module (Digital Input) |
| Number of Points | 64 Points (8 groups × 8 points per group) |
| Input Signal | 24 V DC (Sinking or Sourcing — selectable via DIP switch) |
| Input Voltage Range | 12–24 V DC (Logic “1”); 0–5 V DC (Logic “0”) |
| Input Current | Typically 3.5 mA per point (24 V DC) |
| On/Off Ratio | ON voltage: ≥ 11 V DC; OFF voltage: ≤ 5 V DC |
| Isolation | Opto-isolated (500 V AC between field and logic side) |
| Response Time | ON → OFF: ≤ 0.2 ms; OFF → ON: ≤ 5 ms (with filter) |
| Filter Setting | 0.1 ms / 0.5 ms / 1.0 ms / 5.0 ms / 10 ms (software selectable per group) |
| CPU Compatibility | C3030, C3060, C3070 Series CPUs |
| Communication | SSL (Synchronous Serial Link) — up to 115.2 kbps; EtherNet/IP (on C3070) |
| Power Supply | 5 V DC from CPU bus (via backplane/connection cable) — typically 1.5 W max |
| Operating Temperature | 0°C to +55°C (32°F to +131°F) |
| Operating Humidity | 5% to 95% RH (non-condensing) |
| Dimensions (W×H×D) | 25.4 mm (W) × 98 mm (H) × 120 mm (D) — Standard C3000 module size |
| Weight | Approximately 0.15 kg (0.33 lbs) |
| Protection Rating | IP20 (when installed in cabinet) |
| Certification | CE, UL, CSA, ATEX (hazardous area variants available) |
Material Composition:
- Module Housing: Flame-retardant PBT (Polybutylene Terephthalate) — Black
- PCB: FR-4 Glass Epoxy, conformal coated with acrylic resin
- Connectors: Mil-spec circular connectors or spring-clamp terminal blocks (depending on variant)
- LED Indicators: Green LED per group (8 LEDs total) for input status indication
- Isolation Components: Optocouplers (e.g., Toshiba TLP series) — 500 V AC isolation rating
Structural Features:
- Standard C3000 module form factor — mounts in CPU rack or remote I/O rack
- 8 groups of 8 inputs — each group independently configurable for filter and common terminal
- Front-facing LED indicators — visual status without software
- DIP switches or software configuration — select sinking/sourcing input mode
- Hot-swap capable (with redundant CPU configuration)
Applicable Industries:
- Oil & Gas
- Chemical & Petrochemical
- Power Generation
- Water & Wastewater
- Manufacturing (OEM Machinery)
- Food & Beverage
- Pharmaceutical
- Mining & Metals
Advantages & Highlights:
- 64 digital inputs in single module — reduces rack space and wiring
- Opto-isolation (500 V AC) — protects CPU from field transients
- Software-configurable filter — eliminates noise on long cable runs
- Sinking/Sourcing selectable — flexible field wiring options
- EtherNet/IP support (C3070 CPU) — seamless integration with Rockwell/Allen-Bradley networks
- CompactLogic architecture — high-speed deterministic scan (typically 1–10 ms cycle)
- Long-term availability — Yokogawa guarantees C3000 spares for 20+ years
Installation Requirements:
- Install in C3000 CPU rack or remote I/O rack — verify slot compatibility with C3030/C3060/C3070 CPU
- Connect field wiring to rear terminal block — observe correct polarity for sinking/sourcing mode
- Set DIP switches or configure via FCS (Field Control Station) software for input mode
- Verify SSL communication cable connection between CPU and module (max cable length: 1 km at 115.2 kbps)
- Ground module chassis to panel ground — do not float
Usage Precautions:
- Never connect AC field signals directly — module is DC input only (12–24 V DC)
- Do not exceed 64 input points per module — use additional modules for more channels
- Verify sinking vs. sourcing mode before energizing — incorrect setting can damage module or field devices
- Set appropriate filter time — too short causes false triggers from noise; too long delays response
- Handle with ESD precautions — use grounded wrist strap during installation
- Update module firmware via CPM (Common Platform Manager) or FCS software when updates are released
- Do not operate in environments with excessive vibration (> 5G) without vibration dampening mounts
