Table of Contents
Advertisement
Parameter List
Parameter
PID control automatic
127
switchover frequency
128
PID action selection
129
PID proportional band
130
PID integral time
131
PID upper limit
132
PID lower limit
133
PID action set point
134
PID differential time
Output interruption
575
detection time
Output interruption detection
576
level
Output interruption cancel
577
level
120
Incre
Name
ments
0.01Hz
1
0.1%
0.1s
0.1%
0.1%
0.01%
0.01s
0.1s
0.01Hz
0.1%
Initial
Range
Value
Set the frequency at which the control is
0 to 400Hz
automatically changed to PID control.
9999
9999
Without PID automatic switchover function
10
PID reverse action
11
PID forward action
20
PID reverse action
21
PID forward action
10
50
PID reverse action
51
PID forward action
60
PID reverse action
61
PID forward action
If the proportional band is narrow (parameter setting
is small), the manipulated variable varies greatly with
a slight change of the measured value. Hence, as the
0.1 to 1000%
proportional band narrows, the response sensitivity
100%
(gain) improves but the stability deteriorates, e.g.
hunting occurs.
Gain K = 1/proportional band
9999
No proportional control
When deviation step is input, time (Ti) is the time
required for only the integral (I) action to provide the
same manipulated variable as that for the
0.1 to 3600s
proportional (P) action. As the integral time
1s
decreases, the set point is reached earlier but
hunting occurs more easily.
9999
No integral control.
Set the upper limit value.
If the feedback value exceeds the setting, the FUP
0 to 100%
signal is output. The maximum input (20mA/5V/10V)
9999
of the measured value (terminal 4) is equivalent to
100%.
9999
No function
Set the lower limit value.
If the measured value falls below the setting range,
0 to 100%
the FDN signal is output.
9999
The maximum input (20mA/5V/10V) of the measured
value (terminal 4) is equivalent to 100%.
9999
No function
0 to 100% Used to set the set point for PID control.
9999
9999
Terminal 2 input voltage is the set point.
For deviation lamp input, time (Td) required for
providing only the manipulated variable for the
0.01 to
proportional (P) action. As the differential time
9999
10.00s
increases, greater response is made to a deviation
change.
9999
No differential control.
If the output frequency after PID operation remains
0 to 3600s
lower than the Pr. 576 setting for longer than the time
1s
set in Pr. 575, the inverter stops operation.
9999
Without output interruption function
Set the frequency at which the output interruption
0Hz
0 to 400Hz
processing is performed.
Set the level (Pr. 577 -1000%) to release the PID
1000% 900 to 1100%
output interruption function.
Description
Deviation value signal
(terminal 1)
Measured value input
(terminal 4)
Set value (terminal 2 or
Pr. 133)
Deviation value signal
input
(L
W
, CC-Link
ON
ORKS
communication)
Measured value, set
value input
(L
W
ON
ORKS
CC-Link communication)
,
Advertisement
Table of Contents
