Hi,
I just fitted an Inkbird ITC-100VH to control my boil kettle in a HERMS setup. I had an TA4-SSR before but that doesn't have manual mode which made the boil a bit of a gamble.
I struggled a lot getting the Inkbird PID to work in Manual mode. Turns out you need to set a few settings correctly to enable it. But I managed that.
However, I couldn't get the Control Cycle time right. I set the Ctl parameter to 1 because I have an SSR controlling the heating element and I just want the shortest cycle time possible (PID turns element on/off in short bursts -On for 50% of the time).
But this resulted in the PID firing the element for 17 seconds followed by an off cycle of 17 seconds when set to 50% output in manual mode.
After a lot of experimenting - I started by lowering the Hysteresis time because the manual said that could affect the Ctl settings effect.
That didn't change anything, then after more trial and error testing, I ended up setting both the M50 and P properties to 0. And now Ctl works to control cycle time. I can set it at 1 second but ended up using 4 because it looks like the on/off granularity of this device is 0.5 seconds.
So, to my questions:
Why does the 3 PID settings affect manual mode?
Can i not use a cycle time of 1 second, that works on the TA4-SSR ?
Having to basically disable PID settings to be able to use manual mode makes it less useful.
I just fitted an Inkbird ITC-100VH to control my boil kettle in a HERMS setup. I had an TA4-SSR before but that doesn't have manual mode which made the boil a bit of a gamble.
I struggled a lot getting the Inkbird PID to work in Manual mode. Turns out you need to set a few settings correctly to enable it. But I managed that.
However, I couldn't get the Control Cycle time right. I set the Ctl parameter to 1 because I have an SSR controlling the heating element and I just want the shortest cycle time possible (PID turns element on/off in short bursts -On for 50% of the time).
But this resulted in the PID firing the element for 17 seconds followed by an off cycle of 17 seconds when set to 50% output in manual mode.
After a lot of experimenting - I started by lowering the Hysteresis time because the manual said that could affect the Ctl settings effect.
That didn't change anything, then after more trial and error testing, I ended up setting both the M50 and P properties to 0. And now Ctl works to control cycle time. I can set it at 1 second but ended up using 4 because it looks like the on/off granularity of this device is 0.5 seconds.
So, to my questions:
Why does the 3 PID settings affect manual mode?
Can i not use a cycle time of 1 second, that works on the TA4-SSR ?
Having to basically disable PID settings to be able to use manual mode makes it less useful.
