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Chapter 4
4.2.54 Control gain switching function (CAS)
The control gain switching function allows you to set and switch
between two types of gains and time constants for the speed control
system (with proportional and integral compensations) when the V/F
characteristic curve selection is the sensorless vector control,
0Hz-range sensorless vector control, or vector control with sensor.
To use this function, assign function "26" (CAS: control gain setting) to
one of the terminal [1] to [8] functions (C001 to C008).
When the CAS terminal is turned off, the gain settings "H050", "H250", "H051", "H251", "H052", and "H252" are
selected. When the CAS terminal is turned on, the gain settings "H070", "H071", and "H072" are selected.
If function "26" (CAS: control gain setting) is not assigned to any intelligent input terminal, the same gain settings as
those selected when the CAS terminal is off are selected.
Item
V/F characteristic curve selection
Terminal function
Motor speed constant, 1st/2nd
motors
PI proportional gain
PI integral gain
P proportional gain
Terminal selection PI proportional
gain setting
Terminal selection PI integral gain
setting
Terminal selection P proportional
gain setting
Gain switching time
4.2.55 P/PI switching function (PPI)
The P/PI switching function allows you to switch the control
(compensation) mode of the speed control system between the
proportional integrated compensation and proportional compensation
modes when the V/F characteristic curve selection is the sensorless
vector control, 0Hz-range sensorless vector control, or vector control
with sensor.
To use this function, assign function "43" (PPI: P/PI mode selection) to one
of the terminal [1] to [8] functions (C001 to C008).
When the PPI terminal is turned off, the proportional integrated compensation mode is selected. When the PPI
terminal is turned on, the proportional compensation mode is selected.
If function "43" (PPI: P/PI mode selection) is not assigned to any intelligent input terminal, the proportional integrated
compensation mode is selected.
Item
V/F characteristic curve
selection, 1st/2nd/3rd motors
Terminal function
Motor speed constant, 1st/2nd
motors
PI proportional gain
PI integral gain
P proportional gain
Terminal selection PI
proportional gain setting
Function code
Data or range of data
A044/A244
C001 to C008
0.001 to 9.999, 10.00 to
H005/H205
H050/H250
0.0 to 999.9, 1000 (%)
H051/H251
0.0 to 999.9, 1000 (%)
H052/H252
H070
0.0 to 999.9, 1000 (%)
H071
0.0 to 999.9, 1000 (%)
H072
H073
0. to 9999. (ms)
Function code
Data or range of data
A044/A244/
A344
C001 to C008
H005/H205
0.001 to 80.000
H050/H250
0.0 to 999.9, 1000 (%)
H051/H251
0.0 to 999.9, 1000 (%)
H052/H252
0.001 to 10.00
H070
0.0 to 999.9, 1000 (%)
4-58
Explanation of Functions
Related code
A044/A244: V/F characteristic curve selection, 1st/2nd motors
C001 to C008: Terminal [1] to [8] functions
H005/H205: Motor speed constant, 1st/2nd motors
H050/H250: PI proportional gain, 1st/2nd motors
H051/H251: PI integral gain, 1st/2nd motors
H052/H252: P proportional gain setting, 1st/2nd motors
H070: Terminal selection PI proportional gain setting
H071: Terminal selection PI integral gain setting
H072: Terminal selection P proportional gain setting
03
Sensorless vector control
04
0Hz-range sensorless vector control
05
V2 (not available for "A244")
26
CAS: Control gain setting
80.00
0.01 to 10.00
0.00 to 10.00
Taper time at gain switching
Related code
A044/A244: V/F characteristic curve selection, 1st/2nd
motors
C001 to C008: Terminal [1] to [8] functions
H005/H205: Motor speed constant, 1st/2nd motors
H050/H250: PI proportional gain, 1st/2nd motors
H051/H251: PI integral gain, 1st/2nd motors
H052/H252: P proportional gain setting, 1st/2nd motors
Sensorless vector control (not available for
03
"A344")
04
0Hz-range sensorless vector control (not
05
available for "A344")
V2 (not available for "A244" and "A344")
43
PPI: P/PI mode selection
Description
Description
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