Digital guide
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Yokogawa UT55A‑000‑01‑00
- Product Name: Universal Single‑Loop Controller
- Model Series: UT55A Series Standard Process Controllers
- Technical Specifications: Input: universal thermocouple, RTD, DC voltage, DC current; control output: open‑collector transistor output; sampling period: 50 ms; power supply: 24 VDC ±10%; operating temperature: ‑10 °C to +50 °C; front‑panel protection grade IP66
Detailed content
- Functional Features: PID auto‑tuning control; manual‑auto mode switching; high/low limit alarm; sensor break detection; Modbus‑RTU communication; setpoint memory function
- Performance Parameters: Measurement accuracy: ±0.1% FS; control precision: ±0.2% FS; overshoot suppression; high‑speed response to process changes
- Material Composition: Sealed polycarbonate front panel; flame‑retardant ABS plastic housing; gold‑plated terminal connectors; anti‑vibration internal circuit structure
- Structural Characteristics: Standard 1/4 DIN panel‑mount form factor; sealed dustproof and waterproof front panel; compact integrated terminal block design
- Working Principle: Captures real‑time sensor signals; compares measured value with target setpoint; adjusts transistor‑type control output via adaptive PID algorithm for process regulation
- Advantages: Low‑voltage DC power supply; compact size; high environmental protection grade; simple configuration; reliable sensor fault detection; stable control performance
- Applicable Industries: Small industrial furnaces, laboratory equipment, environmental test equipment, food machinery, pharmaceutical equipment, precision heating systems
- Installation Requirements: 1/4 DIN panel cutout installation; vertical mounting only; separate DC power supply wiring from sensor signal wiring; ensure front‑panel seal integrity
- Usage Precautions: Do not short‑circuit transistor output terminals; avoid high‑humidity environments without sealing; perform regular input calibration; prevent mechanical impact on the front panel
