PID parameter group 08
PARAMETER DESCRIPTION 226
5.9.2 PID parameter group 1
By setting PID parameters users can realize automatic adjustment of process control.
Parameter
Name
Default Setting Range
Content
08-02
P.241
PID sampling period
20ms
0~6000ms
Feedback signal sampling period. Adjuster computes once
every sampling period. The longer the sampling period, the
slower the response.
08-03
P.225
PID target value
20%
0～08-43(P.251)
When ten-digit of 08-00 (P.170) is set to 0 and single-digit is
not set to 0,
the target value is set by 08-03(P.225)
08-04
P.172
Proportional gain
20.0%
0.1%～1000.0%
This gain determines the proportion controller’s response on
feedback deviation. The greater the gain, the faster the
response. Gain set too high will cause vibration.
08-05
P.173
Integral time
1.00s
0～60.00s
This parameter determines integral controller’s integral time.
When integral gain is too high, integral effect will be too
weak to eliminate steady state deviation. When integral gain
is rather small, the system vibration time will increase, and
too small integral gain will cause system unstable.
08-06
P.174
Differential time
0ms
0～10000ms
This gain determines deviation controller’s response to
deviation change rate. Appropriate deviation time can
reduce overshooting and vibrating between proportion
controller and integral controller. Deviation time set too long
will cause system vibration.
08-07
P.175
Abnormal deviation
0.0%
0～200.0%
---
08-08
P.176
Abnormal duration
time
30.0s
0～600.0s
---
08-09
P.177
Abnormal processing
mode
0
0
Stop freely
1
Slow down to stop
2
Alarm and continue operation
08-10
P.178
Sleep detection
deviation
0.0%
0～100.0%
---
08-11
P.179
Sleep detection
duration time
1.0s
0～255.0s
---
08-12
P.180
Wake-up level
90.0%
0～200.0%
---
08-13
P.181
Stop level
40.00Hz 0～120.00Hz
---
08-14
P.182
Upper integral limit
100.0% 0～200.0%
When the deviation value accumulated by integral time,
need to set an upper limit for deviation accumulation. For
example, the upper integral limit of frequency is equal to
01-03(P.3) * 08-14(P.182).
08-15
P.183
Deceleration step
length when stable
0.50Hz 0～10.00Hz
When feedback pressure reach
stopping deviation value
and time (in seconds), inverter will decrease frequency by
08-15 (P.183) value per second.
