On the two white labels in the top is written below the date
PF1-DJQ
S/N:2053
SISTEMA 214
Pid temperature control
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piratepaul
- Posts: 432
- Joined: Mon May 20, 2013 2:45 pm
Re: Pid temperature control
If you google sistema214 bee it comes up with bee eater in foreign languages.
Tar&stuff.
Tar&stuff.
Re: Pid temperature control
I have gone through your post and found something there.
If you look at the top pic there is an L shaped hole in the board, there is orange wire behind the hole, the wire is a similar colour to burned copper.
I thought it was a burned PCB track in the area of the relay, on second inspection it is obviously a hole.
If you look at the top pic there is an L shaped hole in the board, there is orange wire behind the hole, the wire is a similar colour to burned copper.
I thought it was a burned PCB track in the area of the relay, on second inspection it is obviously a hole.
Re: Pid temperature control
From what I remember PID control is proportional, integral and derivative control.
It isn't used for straight on/off control, it will use something like a resistance thermometer as a detector and drive a 1-5v or 4-20mA output which needs some sort of interface to ramp up and down the power to the heater.
Proportional basically causes a change in output directly in proportion to the input.
Integral causes a change in output which ramps it up/down with time depending on the difference between setpoint and actual (aka error)
Derivative causes a change in output relative to the rate of change of the error with respect to time
It isn't used for straight on/off control, it will use something like a resistance thermometer as a detector and drive a 1-5v or 4-20mA output which needs some sort of interface to ramp up and down the power to the heater.
Proportional basically causes a change in output directly in proportion to the input.
Integral causes a change in output which ramps it up/down with time depending on the difference between setpoint and actual (aka error)
Derivative causes a change in output relative to the rate of change of the error with respect to time