Analog Hot Runner Controllers
Single-Zone Analog Controllers - Controls one heater zone
- Manual knob for temperature setting
Multi-Zone Analog Controllers - Multiple knobs for multiple zones
- No centralized intelligence
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ON/OFF (Thermostatic) Controllers - Basic switching control
- Heater turns ON or OFF based on setpoint
Proportional Analog Controllers - Adjusts power gradually instead of full ON/OFF
- More stable than thermostatic type
- Still not as precise as digital/PID
Phase Angle Controllers - Controls power by adjusting AC waveform
- Smoother heating control
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Key Features (and limitations) What they do:
- Simple operation
- Low cost
- Easy maintenance
- No software, no crashes
- No PID control
- No auto-tuning
- No data logging
- No alarms (beyond “something smells burnt”)
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