Error with Pressure Loop PID Heating Element

[bbcxo]

Heating Element: DERNORD Immersion Cartridge Heater 120V 1500W Hot Rod Heating Element Replacement 3/4 Inch Thread

Pressure Sensor: Psi Pressure Transducer 4-20mA Output G1/4" Silicon Pressure Transmitter Transducer for Water Gas Oil (0-0.2MPA)

• using 0-30 psi

Relay: Inkbird Solid State Relay 40DA DC SSR Black Heat Sink for PID Thermostat Temperature Controller

• Load Voltage: 24-380VAC

• Load Current: 40A

• Input Voltage: DC 3-32V

Power Supply: 120-24

Temp sensor rtd pt100

 

Aim for the the program is to control the air pressure in an enclosed tank via a heating element. I'm assuming due to getting an error with the PID status instruction being false, the PID/Auto tune/PWM/heating element won't activate/start. Other than that, pretty lost on why the system isn't functioning. We've checked that all sensors are working.

 

 

 

Pressure_PWM - Copy.vlp

[bbcxo]

this was the status from the pid

 

fixed the parameters in the pid for control/process value.

Control value to 0-1000

process value: 0-30 for pressure sensor range

 

will update if it starts working

[Joe Tauser]

You haven't given yourself a lot of room to control here.  It will work better if you set your process value to 0-3000 and use a virtual decimal point at xx.xx for pressure.

 

Joe T.

Pressure_PWM - Copy JT.vlp

[bbcxo]

Thanks. Got it up and running