When PID reference source is digital setting, PID digital setting
0~3 depends on DI terminal function 43 (preset PID terminal I ) and
44 ( preset PID terminal 2): | preset PID terminal1 | preset PID terminal 2 | PID Digital setting value(0.1%) | | ineffective | ineffective | P40.06 * 100.0% / P40.05 | | ineffective | effective | P40.07 * 100.0% / P40.05 | | effective | ineffective | P40.08 * 100.0% / P40.05 | | effective | effective | P40.09 * 100.0% / P40.05 |
For example: When AI1 is used as PID feedback, if the full range
corresponds to 16.0kg pressure and require PID control to be 8.0kg;
then set P40.05 PID feedback range to 16.00, PID digital reference
terminal select to P40.06, Set P40.06 (PID preset setting 0) to be
8.00
|
| P40.10 | PID reference source selection | 0:ref1
1:ref1+ref2
2:ref1-ref2
3:ref1*ref2
4:ref1/ref2
5:Min(ref1,ref2)
6:Max(ref1,ref2)
7(ref1+ref2)/2
8: fdb1and fdb2 switchover | 0 | ☆ |
| P40.11 | PID feedback source1 | Unit’s digit 0:PID feedback source1(fdb1) 0:AI1 1:AI2 2:AI3(option card) 3:AI4(option card) 4: PLUSE(HDI) 5: Communication 6: Motor rated output current 7: Motor rated output frequency 8: Motor rated output torque 9: Motor rated output frequency Ten’s digit : PID feedback source2 (fdb2) Same as Unit’s digit | 00 | ☆ |
| P40.13 | PID feedback function selection | 0:fdb1
1:fdb1+fdb2
2:fdb1-fdb2
3:fdb1*fdb2
4:fdb1/fdb2
5:Min(fdb1,fdb2)Take fdb1.fdb2 smaller value
6:Max(fdb1,fdb2) Take fdb1.fdb2 bigger value
7: (ref1+ref2)/2
8: fdb1and fdb2 switchover | 0 | ☆ |
| P40.14 | PID output feature | 0: PID output is positive: when the feedback signal exceeds the PID
reference value, the output frequency of the inverter will decrease
to balance the PID. For example, the strain PID control during
wrapup 1: PID output is negative: When the feedback signal is stronger
than the PID reference value, the output frequency of the inverter
will increase to balance the PID. For example, the strain PID
control during wrapdown | 0 | ☆ |
The PID output characteristic is determined by P40.14 and Di
terminal 42 function PID positive/negative switching: P40.14 = 0 and "42: PID positive/negative switching" terminal is
invalid: : PID output characteristic is positive P40.14 = 0 and "42: PID positive/negative switching" terminal is
valid: : PID output characteristic is negative P40.14 = 1 and "42: PID positive/negative switching" terminal is
invalid: : PID output characteristic is negative P40.14 = 1 and "42: PID positive/negative switching" terminal is
valid: : PID output characteristic is positive |
| P40.15 | Upper limit of PID output | -100.0%～100.0% | 100.0% | ☆ |
| P40.16 | lower limit of PID output | -100.0%～100.0% | 0.0% | ☆ |
| P40.17 | Proportaional gain KP1 | 0.00～10.00 The function is applied to the proportional gain P of PID input. P determines the strength of the whole PID adjuster. The parameter
of 100 means that when the offset of PID feedback and given value
is 100%, the adjusting range of PID adjust is the Max. frequency
(ignoring integral function and differential function).
| 5.0% | ☆ |
| P40.18 | Integral time TI1 | 0.01s～10.00s This parameter determines the speed of PID adjustor to carry out
integral adjustment on the deviation of PID feedback and reference. When the deviation of PID feedback and reference is 100%, the
integral adjustor works continuously after the time (ignoring the
proportional effect and differential effect) to achieve the Max.
Frequency (P01.06) or the Max. Voltage (P12.21). Shorter the
integral time, stronger is the adjustment
| 1.00s | ☆ |
| P40.19 | Differential time TD1 | 0.000s～10.000s This parameter determines the strength of the change ratio when PID
adjustor carries out integral adjustment on the deviation of PID
feedback and reference. If the PID feedback changes 100% during the time, the adjustment of
integral adjustor (ignoring the proportional effect and
differential effect) is the Max. Frequency (P01.06) or the Max.
Voltage (P12.21). Longer the integral time, stronger is the
adjusting.
| 0.000s | ☆ |
| P40.20 | Proportaional gain KP2 | 0.00～200.0%. | 5.0% | ☆ |
| P40.21 | Integral time TI2 | 0.00s (no any integral effect )～20.00s
| 1.00s | ☆ |
| P40.22 | Differential time TD2 | 0.000s～0.100s | 0.000s | ☆ |
| P40.23 | PID parameter switchover condition | 0:no switchover Do not switch, use KP1, TI1, TD1
1:switchover via DI Switch by DI terminal KP1, TI1, TD1 are used when DI terminal No. 41 function is invalid;
KP2, TI2, TD2 are used when valid
2:automatic switchover based on deviation The absolute value of PID command and feedback deviation is less
than P40.24, using KP1, TI1, TD1; the absolute value of deviation
is greater than P40.25, using KP2, TI2, TD2 parameters; the
absolute value of deviation is between P40.24~P40.25, The two sets
of parameters are linearly transitioned. | 0 | ☆ |
| P40.24 | PID parameter switchover devation 1 | 0.0%～P40-25 | 20.0% | ☆ |
| P40.25 | PID parameter switchover devation 2 | P40-24～100.0% | 80.0% | ☆ |
In some applications, one group PID parameter is not enough,
different PID parameters would be adopted according to the situation. The function codes are used to switch two groups PID parameter. The
setting mode of the regulator parameters P40.20~P40.22 is similar as P40.17~P40.19’s. Two groups PID parameter can be switched via DI terminal, or
switched according to PID deviation automatically. When selection is automatic switching: when the deviation absolute
value between given and feedback is smaller than P40.24 (PID parameter switching deviation 1), PID
parameter selection is group 1. When the deviation absolute value between given and feedback is bigger than
P40.25 (PID parameter switching deviation 2), PID parameter selection is group 2. When the
deviation absolute value between given and feedback is between P40.24 and P40.25, PID parameter is the linear
interpolation of two groups PID parameter, showed as below parameter switching diagram |
