Precautions for Operation
12
Digital Temperature Controllers (Simple Type) User’s Manual (H211)
Precautions for Operation
• It takes approximately two seconds for the outputs to turn ON from after the power supply is turned
ON. Due consideration must be given to this time when incorporating Digital Controllers into a control
panel or similar device.
• Make sure that the Digital Controller has 30 minutes or more to warm up after turning ON the power
before starting actual control operations to ensure the correct temperature display.
• When using self-tuning, turn ON power for the load (e.g., heater) at the same time as or before
supplying power to the Digital Controller. If power is turned ON for the Digital Controller before turning
ON power for the load, self-tuning will not be performed properly and optimum control will not be
achieved. When starting operation after the Digital Controller has warmed up, turn OFF the power
and then turn it ON again at the same time as turning ON power for the load. (Instead of turning the
Digital Controller OFF and ON again, switching from STOP Mode to RUN Mode can also be used.)
• Avoid using the Digital Controller in places near a radio, television set, or wireless installing. The
Digital Controller may cause radio disturbance for these devices.
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