Hot Runner Controllers
Hot runner controllers are specialized temperature controllers that keep specialized injection-mold components at the design temperature in order to keep the plastic flowing. They use several different control techniques. Limit control establishes set points that, when reached, sends a signal from the hot runner control to stop or start a process variable. Linear control matches a variable input signal with a correspondingly variable control signal. Feedforward control does not require a temperature sensor and provides direct control-compensation from the reference signal. Proportional, integral and derivative (PID) control requires real-time system feedback. PID control also monitors the error between the desired variable value and the actual value. Fuzzy logic is a hot runner temperature control technique in which variables can have imprecise values (as in partial truth) rather than a binary status (completely true or completely false). Hot runner controllers that use advanced or non-linear controls such as neural networking, adaptive gain, or emerging algorithms are also available.
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ATP SmartBox
ATP™ (Active Thermocouple Protection) is a breakthrough
in hot runner control system reliability – available
exclusively from Fast Heat.
ATP protects hot runner control system components against
Common Mode Leakage – the short circuit phenomenon
which is the leading cause of catastrophic thermocouple
failure – and thermocouple failure, in turn, can result in
substantial tool downtime and/or control module
maintenance/replacement costs.
ATP is installed as standard equipment in Fast Heat Pulse®
Series controllers and retrofitable into other systems via
Fast Heat SmartMold Box™ and SmartMold Connectors™.
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