Bumpless Transfer in PID block
Any body have a experience in Bumpless Transfer for PID block?
kindly share your idea here .
I'm not quite sure if you mean that, but for bumpless transfer for PID block I'm using TRACK and TRACKVALUE inputs of the block.
When the PID is not active, you should activate TRACK and write Pv value to TRACKVALUE input of the PID block.
Answer belongs to AC800M blocks
For AC500, may be you should assign Actual value to Set_Point, in case you are in Manual mode
From the help:
In normal operation (MANUAL = RESET = LIMITS_ACTIVE = FALSE) the controller calculates the controller error e as difference from SET_POINT – ACTUAL, generates the derivation with respect to time de/dt and stores these values internally.