Selec VFD Series

48
User Manual
Present value
Output frequency
Feedback variable
Deviation limit
Time
Time
P7-07
Sampling Time
0.1 to 100.0 s
Default: 0.2 s
Sampling period (T) means sampling period of feedback quantity; operation is performed by regulator
once every one sampling period. The longer sampling period is, the slower response will be.
P7-08
Feedback
disconnection value
0.1 % to 50.0 % Default: 0.1 %
P7-09
Feedback disconnection
detection time
0.1 to 100.0 s
Default: 10.0 s
The feedback variable of PI can be always detected by system; if feedback variable is less than the
detected value of feedback dis-connection, system will consider feedback signal to be disconnected
by default; if feedback variable is still less than the detected value of feedback disconnection while
actual time is more than the time for detecting feedback disconnection, PIE can be detected and sent
out by the system.