Powtran PI500-E 004G1, Руководство пользователя

Страница: 111 / 166

Chapter 5 Function parameter
107
Ch
ap
ter 5
E2.22 PID integral properties
Units digit integral separation
00
☆
Invalid 0
Valid 1
Tens digit
whether stop integration when
output reaches limit
continue 0
stop integral 1
Integral separation:If the integral separation is set to active, when the integral pause of
multifunction digital DI(function 38) is active, PID integral will stop operations, at the time only
the proportional and derivative actions of PID is active.If the integral separation is set to inactive,
however the multifunction digital DI is active or inactive, the integral separation will be inactive.
Whether stop integration when output reaches limit: you can select whether or not to stop the
integral action after PID operation output reaches the maximum or the minimum value.If you
select to stop the integral action, the PID integral will stop the calculation, which may help to
reduce the overshoot of PID.
E2.23 PID initial value 0.0%~100.0%( Max frequency) 0.0%
☆
E2.24 PID initial value hold time 0.00s~360.00s 0.00s
☆
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.
PID initial value
E2.23
Time(t)
Output frequency(Hz)
PID initial value hold
time E2.24
Figure5-30:functional schematic of PID initial value.
E2.25 Maximum deviation of twice outputs(forward) 0.00% to 100.00% 1.00%
☆
E2.26
Maximum deviation of twice
outputs(backward)
0.00% to 100.00% 1.00%
☆
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.
E2.25 and E2.26 respectively corresponds to the maximum of the absolute value of output
deviation when rotating forward and reverse.
E2.27
Computing status after
PID stop stop without computing 0
1
☆
stop with computing 1
Used to select whether to continue computing in the state of PID shutdown. Generally, PID
will stop computing in the state of shutdown.
E2.28 Reserved
E2.29 PID automatic deceleration frequency option
Invalid 0
0
☆
valid 1
PID feedback value equal to the given value, the inverter frequency is reduced effectively.
When PID frequency effectively reduced, frequency converter detection time interval E2.31
reduced frequency, every time decrease frequency of 0.5 Hz, if in the process of reducing
frequency feedback value is less than the given value, inverter speed up directly to the set value.
E2.30 PID stop frequency 0Hz to Max frequency (F0.19) 25Hz
☆