Key Specifications

• Model: EWTQ 905
• Type: Microprocessor-based digital controller
• Display: 4-digit red LED for process value; 2 LED indicators for output status

 Control Functions

• Modes:
  • ON/OFF
  • Neutral Zone ON/OFF
  • PID single action
  • PID dual action (direct and reverse)
• Tuning:
  • Auto-tuning FAST
  • Self-tuning for PID optimization

 Inputs & Outputs

• Inputs:
  • Thermocouples (J, K)
  • Thermoresistances (PT100)
  • Thermistors (PTC, NTC)
  • mV signals (0–50/60 mV, 12–60 mV)
  • Normalized analog signals (0/4–20 mA, 0–1 V, 0/1–5 V, 0/2–10 V)
• Outputs:
  • Up to 2 relay outputs or solid-state relay (SSR) drivers

 Programming & Configuration

• Set Point (SP1): Rapid programming via front keys
• Alarm Thresholds (AL1): Configurable through fast programming mode