Mitsubishi Electric fr-e700 series, Instruction Manual

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Special operation Parameter
6 - 312
NOTES In normal PID control, PID control is stopped when multi-speed operation signal (RH, RM, RL, REX
signal) or JOG signal is input. In dancer control, however, PID control continues handling the sig-
nals as the main speed.
During dancer control, Second acceleration/deceleration time of Pr. 44 and Pr. 45 are the parame-
ters for acceleration/deceleration time setting to the main speed command source. They do not
function as the second function.
When switchover mode is set with "6" in Pr. 79 , dancer control (PID control) is invalid.
Speed command of terminal 4 input from terminal AU is invalid when dancer control is selected.
Acceleration/deceleration of the main speed command is the same operation as when frequency
command is increased/decreased by analog input.
앫
Therefore, SU signal remains on even if the starting signal is turned on/off (always in the
constant speed state).
앫
The DC brake operation starting frequency when turning off the starting signal is not Pr. 10 but
a smaller value of either Pr. 13 or 0.5 Hz.
앫
The set frequency monitor is always variable as "main speed PID control".
The main speed setting frequency accelerates for the acceleration/deceleration time set in Pr. 44
and Pr. 45 and the output frequency accelerates/decelerates for the acceleration/deceleration
time set in Pr. 7 and Pr. 8. Therefore, when the set time of Pr. 7 and Pr. 8 is longer than Pr. 44 and
Pr. 45, the output frequency accelerates/decelerates for the acceleration/deceleration time set in
Pr. 7 and Pr. 8.
For the integral term limit, a smaller value of either the PID manipulated variable (%) value con-
verted from the linear, interpolated Pr. 1 "Maximum frequency" with Pr. 902 and Pr. 903, or 100% is
used for limit. Although the output frequency is limited by the minimum frequency, operation
limit of the integral term is not performed.