EM15 User’s Manual
5. Description of Function Codes
79
and ranges from 0.0% to 100.0%. Similarly, the feedback of PID is also a relative value. The function of PID is to
make the two values the equal.
C0-04
PID action direction
Default
0
Setting
Range
0
Forward action
1
Reverse action
0: Forward action
When the feedback value is smaller than the PID setting, the frequency inverter's output frequency rises. For example,
the winding tension control requires forward PID action.
1: Reverse action
When the feedback value is smaller than the PID setting, the frequency inverter's output frequency reduces. For
example, the unwinding tension control requires reverse PID action.
Note this function is influenced by the DI function 35 "Reverse PID action direction".
C0-05
PID setting feedback range
Default
1000
Setting Range
0~65535
This parameter is a non-dimensional unit. It is used for PID setting display (U0-15) and PID feedback display
(U0-16).
Relative value 100% of PID setting feedback corresponds to the value of C0-05. If C0-05 is set to 2000 and PID
setting is 100.0%, the PID setting display (U0-15) is 2000.
C0-06
Proportional gain KP1
Default
20.0
Setting Range
0.00~100.0
C0-07
Integral time TI1
Default
0.80s
Setting Range
0.01s~10.00s
C0-08
Differential time TD1
Default
0.000s
Setting Range
0.000s~10.000s
⚫
C0-06 (Proportional gain Kp1)
It decides the regulating intensity of the PID regulator. The higher the Kp1 is, the larger the regulating intensity is.
The value 10.00 indicates when the deviation between PID feedback and PID setting is 100.0%, the adjustment
amplitude of the PID regulator on the output frequency reference is the maximum frequency.
⚫
C0-07 (Integral time Ti1)
It decides the integral regulating intensity. The shorter the integral time is, the larger the regulating intensity is. When
the deviation between PID feedback and PID setting is 100.0%, the integral regulator performs continuous
adjustment for the time. Then the adjustment amplitude reaches the maximum frequency.
⚫
C0-08 (Differential time Td1)
It decides the regulating intensity of the PID regulator on the deviation change. The longer the differential time is, the
larger the regulating intensity is. Differential time is the time within which the feedback value change reaches 100.0%,
and then the adjustment amplitude reaches the maximum frequency.
C0-09
Proportional gain KP2
Default
20.0
Setting Range
0.00~100.0