PID Controller Error
When I turn on the injection moulder, the PV setting comes up with’HHH’. I can’t find anything in the manual, does anyone have a clue what this means?
All the best
It means the temperature input to the PID is out of range. Check that the setting for the thermocouple type matches the thermocouple you are using (probably type k) and that it’s properly connected. If it’s set to NTC thermistor the thermocouple is effectively a dead short across the input giving a maximum high reading.
Also check the thermocouple for continuity, if it has crimped on spade connectors these can sometimes be bad.Toggle replies
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