| for a proportional plus derivative element the input and output variable of which are of the same kind the duration of the time interval required by the ramp response to reach twice the value that occurred immediately after the ramp was applied|
Note 1 to entry: The rate time is given by
|KD||is the derivative action coefficient;|
|KP||is the proportional action coefficient;|
|Td||is the rate time.|
Note 2 to entry: This entry was numbered 351-28-28 in IEC 60050-351:2006.