106
4. Parameter description
Parameter
●
Upper integral:
Limit error upper accumulation, when the reeor value along with integral time
accumulation.
● When the pressure feedback meet skew detection value of reach down and reach down time which
the stop detection of time set.
● When the feel-back value is lower than Abnormal deviation level and continue exception duration
time P.176, the PID is exceptional. This time the screen will display
,
it will select freedom
or brakes according to P.177.
For example: when P.175=60%, P.176=30s, P.177=0, when the feel-back value is lower than 60%
of the target feel-back value and continue 30s, the screen will display
, and
freedom stop.
the target
feel-back
value
the feel-back
value
Maximum frequency
P.176
0HZ
• If P.178=0, the value of P.179, P.180 and P.181is invalid. If the value of P.178 is not 0, the PID sleep
function is selected. When the feel-back value and the target feel-back absolute value is lower than
sleep detect deviation and continue sleep detect duration time P.179, the inverter will minish the
output frequency gradually, when the output frequency lower than outage level P.181, the inverter
will brakes stop. When the feel-back value is lower than revival level P.180, the output frequency of
inverter will select PID control function again.
For example: P.178=5%, P.179= 30s, P.180=90%, P.181=40Hz.
When the feel-back value is larger than 95% of the target feel-back value and is lower
than 105% of the target feel-back value, continue 10s, the inverter will minish the
output frequency gradually. When the output frequency is lower than 40Hz, the
inverter will brakes stop. When the feel-back value is lower than 90% of the target
feel-back value, the inverter will revival, the output frequency of inverter will select
PID control function again.
the target feel-back value
Revival level
below
P.179
P.179
feedback
actually
Output
frequency
Outage
level
0HZ
Revival
process
Outage
proccess
Minishing the output
frequency gradually
