Chapter 5 Function parameter
165
PID initial value
hold time
When the inverter starts, PID output is fixed at PID initial value(E2.23), and then
continuous for the PID initial value hold time(E2.24), at last PID begins operation of the
closed-loop adjustment.
The figure is functional schematic of PID initial value.
This function is used to limit the deviation between two PID output beats(2ms/beats), in
order to suppress the too fast changes of PID output so that stabilizing the inverter operation.
Maximum
deviation of twice
outputs(forward)
Maximum
deviation of twice
outputs(backward)
E2.25 and E2.26 respectively corresponds to the maximum of the absolute value of
output deviation when rotating forward and reverse.
Computing status
after PID stop
Used to select whether to continue computing in the state of PID shutdown. Generally,
PID will stop computing in the state of shutdown.
5-2-18.Virtual DI、Virtual DO:E3.00-E3.21
Virtual VDI1
terminal function
selection
Virtual VDI2
terminal function
selection
Functional schematic of PID initial value.