ASCON FTX8327B112

Core Technical & Performance Parameters

• Input Signal Types (Universal): K, J, S, T, E, B, N thermocouples; PT100, PT1000 RTD thermal resistance; 0–10V, 0–5V, 4–20mA analog voltage/current
• Temperature Measurement Range: -200°C ~ +1800°C (varies by sensor type)
• Control Precision: ±0.1°C resolution, total system measurement error ≤ ±0.3% FS
• Control Algorithm: 3-term PID auto-tuning, self-adaptive fuzzy PID, on/off two-position heating/cooling control
• Output Configuration (Model B112): 1 x 4–20mA analog control output; 1 x relay alarm output (250VAC 5A); RS485 Modbus RTU communication port
• Setpoint Range: Full match sensor input range, adjustable decimal point 0.1°C / 1°C
• Power Supply: 85–265VAC universal mains input, 50/60Hz, power consumption maximum 12VA
• Operating Temperature: 0°C ~ +50°C; storage -20°C ~ +70°C
• Humidity: 10%–90% RH non-condensing
• Panel Cutout Dimension: 92mm × 45mm standard industrial panel mounting hole
• Controller Outer Dimension: 96mm × 48mm × 110mm depth; weight 0.21kg
• Communication Baud Rate: 2400 / 4800 / 9600 / 19200 bps selectable Modbus RTU

Function & Feature Highlights

1. Full auto-tune PID function automatically calculates proportional/integral/derivative parameters without manual calibration, eliminates temperature overshoot and steady-state error
2. Dual heating/cooling control logic for refrigeration and thermal cycling equipment
3. High/low temperature alarm relay output, configurable deviation alarm, absolute value alarm and sensor break fault alarm
4. Universal sensor input automatically detects thermocouple/RTD type via menu configuration without hardware modification
5. RS485 Modbus RTU multi-drop communication connects up to 32 controllers to single PLC/Scada monitoring system
6. Digital filter algorithm suppresses industrial electromagnetic noise interference on sensor input signal
7. Password-protected parameter menu prevents unauthorized modification of critical process temperature setpoints
8. Sensor break detection function automatically triggers alarm and safety output shutdown if thermocouple/RTD wire disconnects

Material & Structural Characteristics

• Front Panel: Black flame-retardant ABS plastic, transparent scratch-resistant polycarbonate display window, membrane tactile operation buttons
• Internal Housing: High-temperature resistant plastic enclosure, fully isolated analog and digital circuit compartments to reduce signal crosstalk
• Terminal Block: Screw-type copper terminal connectors with nickel plating, accepts wire cross-section 0.5–2.5mm²
• Display: Dual 4-digit red LED digital display (measured value / setpoint value) with status indicator LEDs
• Heat Resistance: Internal circuit PCB with heat-resistant FR4 substrate, thermal insulation barrier between power supply and analog measurement circuits
• Protection Rating: IP65 front panel (panel mounted); IP20 rear terminal compartment inside control cabinet

Working Principle (Closed-Loop PID Temperature Control)

1. Thermocouple/RTD sensor converts physical temperature into weak analog electrical signal transmitted to controller input terminals
2. Internal high-resolution 24-bit ADC amplifies, filters and converts analog sensor signal into digital temperature value
3. Controller compares measured real temperature against user configured target setpoint to calculate temperature deviation error
4. PID algorithm computes corresponding control output value based on proportional (P), integral (I), derivative (D) coefficients; auto-tune function optimizes coefficients automatically during first heating cycle
5. 4–20mA analog output transmits continuous control signal to heater power regulator (SCR, solid state relay) to adjust heating power proportionally
6. RS485 Modbus port uploads real-time temperature, setpoint and alarm status to upper monitoring PLC; accepts remote setpoint adjustment commands
7. Sensor break detection circuit monitors input signal impedance; open circuit triggers alarm relay output and safety control output cut-off

Installation Requirements

1. Standard 92×45mm rectangular panel cutout mounting; install locking plastic clips to secure controller into equipment panel
2. Rear terminal compartment must remain inside IP20 rated control cabinet; front panel only meets IP65 splash/dust protection
3. Separate sensor wiring from high-current power cables by minimum 10cm distance to avoid electromagnetic signal interference
4. Thermocouple wiring must use dedicated thermocouple compensation wire matching sensor alloy material
5. RS485 communication bus requires 120Ω termination resistor installed at two physical endpoints of multi-drop network
6. Mains power supply wiring must include 2A fuse to protect internal power circuit from short-circuit damage

Application Scenarios

• Industrial electric furnace, heat treatment oven, drying tunnel temperature regulation
• Plastic extrusion injection molding barrel temperature control
• Food processing baking, sterilization thermal cycle equipment
• Laboratory constant temperature water baths, environmental test chambers
• Packaging machinery heat sealing and hot melt glue temperature control
• Chemical reactor small vessel precise thermal process control

Operation & Maintenance Notes

1. Do not install controller front panel in direct sunlight; strong UV light degrades LED display brightness over long-term operation
2. Sensor compensation wire cannot be spliced with generic copper wire; mismatched wire material causes permanent temperature measurement offset error
3. Auto-tune PID cycle must run under full load operating conditions; tuning under empty equipment generates incorrect PID parameters
4. Rear terminal block screw torque limited to 0.6–0.8 N·m; over-tightening cracks plastic terminal housing
5. Avoid cleaning front panel membrane buttons with alcohol or solvent; use dry microfiber cloth only
6. If temperature measurement drift occurs annually, re-calibrate controller via built-in offset adjustment menu