Description

Yokogawa UT55A‑NNN‑11‑UN/CC3 Digital Indicating Temperature Controller

Model Code Breakdown (UT55A‑NNN‑11‑UN/CC3)

Core Specifications

Input

• Universal Input: Thermocouple (TC), RTD, DC mV, V, mA (4–20 mA, 0–20 mA, 0–10 V, etc.)
• Accuracy: ±0.1% FS (after calibration)
• Resolution: 0.01 unit (display)
• Sampling Period: 0.1–10 s adjustable

Control & Output

• Control Algorithms: 8 types including PID, auto‑tuning, fuzzy PID, SUPER overshoot suppression, heating/cooling (optional)
• Standard I/O:
  • Main control output: Universal (current/pulse/relay)
  • 3 × DI, 3 × DO (alarm/status)
  • Up to 8 alarm points (high/low/deviation/rate)
• Ladder Logic: 500 steps standard for interlock, sequence, and alarm logic

Display & Physical

• Display: 14‑segment 5‑digit color LCD with bar graph; sunlight‑readable
• Panel Size: 96 × 96 mm (W × H); depth ~65 mm
• Power: 100–240 V AC, 50/60 Hz; ~5 W consumption
• Operating Temp: ‑10 °C to +50 °C; ≤85% RH (non‑condensing)
• Certifications: UL/CSA

Communication

• CC‑Link (with Modbus master) via /CC3 option
• Supports Modbus RTU/TCP, Ethernet, PROFIBUS‑DP (other options)