Toshiba TOSVERT VF-PS1 User manual

①
E6581329

TOSVERT VF-AS1/VF-PS1
PID control Instruction Manual
The technical information in this manual is provided to explain the principal
functions and applications of the product, but not to grant you a license to
use the intellectual property or any other property of Toshiba Schneider
Inverter Corporation or a third party.
© Toshiba Schneider Inverter Corporation 2011
All rights reserved.

E6581329①
－Contents －
1. Introduction............................................................................................................................2
2. PID control function ...............................................................................................................3
2.1. Process PID control .......................................................................................................3
2.2. Speed PID control ..........................................................................................................5
2.3. Dancer control................................................................................................................7
3. PID control type and parameters.........................................................................................10
4. Setting for PID control..........................................................................................................12
4.1. Fundamental setting.....................................................................................................12
4.1.1. Feedback value ................................................................................................12
4.1.2. Process value ...................................................................................................16
4.1.3. Override function ..............................................................................................19
4.1.4. Acceleration and decleration time.....................................................................19
4.2. Set to suit the motor.....................................................................................................19
4.3. Set to suit the system...................................................................................................20
4.3.1. Set if necessary ................................................................................................20
4.3.2. Switch PID characteristic..................................................................................20
4.3.3. Agreement between process and feedback value............................................20
4.3.4. Switch to frequency command operation .........................................................21
5. PID control adjustment ........................................................................................................22
5.1. Outline of adjustment...................................................................................................22
5.2. Fundamental adjustment (common) ............................................................................22
5.2.1. Proportional (P) gain.........................................................................................23
5.2.2. Integral (I) gain..................................................................................................23
5.2.3. Differential (D) gain...........................................................................................23
5.3. Applied adjustment (Common).....................................................................................24
5.3.1. PID deviation upper limit and lower limit...........................................................24
5.3.2. PID differentiation / integration reset ................................................................24
5.3.3. PID control waiting time....................................................................................24
5.4. Applied adjustment (for speed PID control).................................................................25
5.4.1. Delay filter.........................................................................................................25
5.4.2. Process increasing rate/ decreasing rate .........................................................25
6. Analog input characteristics.................................................................................................26
7. Parameter list of PID control................................................................................................28
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E6581329①
1. Introduction
VF-AS1 and VF-PS1 have PID control function.
You can select the PID control type for your applications.
Process PID control: For temperature or pressure control of fan and pump, which is performed
gently in response to change the speed.
Speed PID control ：For speed control of a winder, which is performed at high speed in response to
change the speed.
Dancer control : For dancer positioning control of winder system
Stop holding P control: Stop position control function by servo lock. <VF-AS1 only>
Note) See the manual E6581319 for detail of “Stop holding P control”.
E6581319: PG feedback board instruction manual
This manual constructs the following.
Chapter 2: Explanation abou three PID control types for VF-AS1 and VF-PS1.
Chapter 3: Difference in parameters of three PID control types.
Chapter 4: Explanation about the parameters you need to set for PID control.
Chapter 5: Explanation about the parameters for adjustment.
Chapter 6: Setting about analog input characteristics.
You need to convert the process value and the feedvack value into the frequency
for PID control.
Chapter 7: Paramerter list of PID control.
First, check your PID control type in chapter 2.
And see chapter 3 to 6 for your setting and adjustment.
See chapter 7 for adjustment range of each parameter.
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2. PID control function
VF-AS1 and VF-PS1 have three types of PID control functions.
You can select the type of PID control for applications by setting parameter.
2.1.Process PID control
Process PID control is selected for temperature or pressure control of fan and pump, which is performed
gently in response to change the speed.
[Process PID control (f359=1)]
[Diagram]
,
PID control
PID deviation upper limit
(f364)
PID deviation lower limit
(f365)
Jum
p
fre
q
uenc
y
p
rocessin
g
Out
p
ut fre
q
uenc
y
u
pp
er limit
(ul)
Out
p
ut fre
q
uenc
y
lower limit
(ll)
Process u
pp
er limit
(f367)
Process lower limit
(f368)
－
Process value
Increase/
decrease rate
PID out
p
ut u
pp
er limit
(f370)
PID output lower limit
(f371)
Feedback value
[Parameter setting]
See the chapter 4 and 5 for detail of parameter setting.
1) Select the PID control type.
Title Function Setting
f359 PID control switching 1(process PID control)
2) Select the input of process value and feedback value.
You need to convert temperature or pressure into frequency for setting.
Item Title Function
fmod Frequency setting mode selection 1 Process value
f207 Frequency setting mode selection 2
Feedback value f360 PID control feedback control signal selection
Frequency free unit covertion function enables to set process value and feedback value easily
See the chapter 7 for detail.
3) Set the following parameters to suit the motor if necessary.
Title Function
fh Maximum frequency
ul Upper limit frequency
ll Lower limit frequency
f270～f275
Jump frequency 1 to 3
f240
Operation starting frequency
f241 Operation starting frequency hysteresis
f243 Stop frequency setting
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4) Set the following parameter to suit the system.
a) Set the acceleration time and deceleration time to small for quick response.
But too small setting cause inverter trip.
Title Function
acc Acceleration time 1
dec Deceleration time 1
.
b) Set the following parameters if necessary.
Item Title Function
f367 Process upper limit
Limit the input level of
process value. f368 Process lower limit
f370 PID output upper limit
Limit the PID output.
f371 PID output lower limit
Switc the PID forward
/reverse characteristic. Input terminal function:
54/55: PID forward/reverse switching
f374 Frequency command agreement detection range
Output of agreement signal
between process value
and feedback value.
<VF-PS1 only>
Output terminal function:
144 to 149: Frequency command agreement signal
(RR/S4,VI,RX)
5) Adjust the PID control gain.
a) Fundamental adjustment
Item Title Function
f362 Proportional (P) gain
f363 Integral (I) gain
PID control gain
f366 Differential (D) gain
b) Adjust the following parameters if necessary.
Deviation means difference between process value and feedback value.
Item Title Function
f364 PID deviation upper limit
Steady the PID control.
(Limit the PID deviation) f365 PID deviation lower limit
Start the PID control after
the system become stable. f369 PID control waiting time
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2.2.Speed PID control
Speed PID control is selected for speed control of a winder, which is performed at high speed in response
to change the speed.
[Speed PID control (f359=2)]
[Diagram]
Output frequency
upper limit
（ul）
PID control
PID deviation upper limit
（f364）
Delay filter
（f361）
PID deviation lower limit
（f365）
Jump
frequency
processing Output frequency
Lower limit
（ll）
Process upper limit
（f367）
Process lower limit
（f368）
－
Feedback value
Increase/
decrase rate
（f372､f373）
PID output upper limit
（f370）
PID output lower limit
（f371）
Process value
[Parameter setting]
See the chapter 4 and 5 for detail of parameter setting.
1) Select the PID control type.
Title Function Setting
f359 PID control switching 2(speed PID control)
2) Select the input of process value and feedback value.
You need to convert tension level into frequency for setting.
Item Title Function
fmod Frequency setting mode selection 1 Process value
f207 Frequency setting mode selection 2
Feedback value f360 PID control feedback control signal selection
a) Frequency free unit covertion function enables to set process value and feedback value easily
See the chapter 7 for detail.
b) You can select the feedback signal by PG feedback.
*You need PG feedback option.
c) You can add or multiply for process value by override function.
Item Title Function
Addition f660 Override addition input selection
Multiplication f661 Override multiplication input selection
3) Set the following parameters to suit the motor if necessary.
Title Function
fh Maximum frequency
ul Upper limit frequency
ll Lower limit frequency
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E6581329①
f270～f275
Jump frequency 1 to 3
f240
Operation starting frequency
f241 Operation starting frequency hysteresis
f243 Stop frequency setting
4) Set the following parameters to suit the system.
Speed PID control set the acceleration time and the deceleration time to the smallest automatically in
spite of parameter(acc,dec) setting.
The quick response is enabled by process increase and decrease rate separated from acceleration
time and declereation time.
Set the following parameters if necessary.
Item Title Function
f367 Process upper limitLimit the input level of
process value. f368 Process lower limit
f370 PID output upper limitLimit the PID output.
f371 PID output lower limit
Switc the PID forward
/reverse characteristic. Input terminal function:
54/55: PID forward/reverse switching
f374 Frequency command agreement detection rangeOutput of agreement signal
between process value
and feedback value.
<VF-PS1 only>
Output terminal function:
144 to 149: Frequency command agreement signal
5) Adjust the PID control gain.
See the section 5 for detail.
a) Fundamental adjustment
And adjust for stability and quick response.
Deviation means difference between process value and feedback value.
Item Title Function
f362 Proportional (P) gain
f363 Integral (I) gain
PID control gain
f366 Differential (D) gain
Steady the PID control
(Feedback filter)
f361 Delay filter
f364 PID deviation upper limit
Steady the PID control.
(Limit the PID deviation) f365 PID deviation lower limit
f372 Process increasing rate (speed type PID control)
Adjust for quick responce
f373 Process decreasing rate (speed type PID control)
b) Adjust the following parameters if necessary.
Item Title Function
Start the PID control after
the system become stable. f369 PID control waiting time
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2.3.Dancer control
Dancer control is selected for dancer positioning control of winder system.
[Dancer control (f359=4)]
[System image]
[Diagram]
Speed reference
0-10V input, etc
Invert
er Invert er
Dancer detection value
4-20mA input, etc
Dancer position
0-10V in
p
ut
,
etc
＋
＋
Operation
command
Switch PID
character
Operation start
f
r
e
q
uenc
y
Jump
fre
q
uenc
y
Dancer position
(Process value) －PID
PID control
control
Dead band
(f379)
Dancer collection
OFF signal
Windup
Speed reference
(Override addition)
Dancer detection value
(Feedback vailue)
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E6581329①
[Dancer control operation]
1) Inverter operates by speed reference.
*Dancer control use override addition function for speed reference.
2) PID control: Process value; dancer position
Feedback value; dancer detection value
Correct speed reference by deviation of PID control for dancer.
Set the dead band (f379) for the deviation if necessary.
3) Set the dancer correction OFF signal to input terminal if necessary.
In case the input terminal ON, the PID output is zero. The speed reference is override addition value.
Windup: If the value after override addition become following, inverter control stop the integration.
(1) Upper limit (ul) or more
Maximum frequency (fh) or more
(2)Lowerlimit(ll) or less
Clear the windup process by deviation value of PID control.
[Parameter setting]
See the chapter 4 and 5 for detail of parameter setting.
1) Select the PID control type.
Title Function Setting
f359 PID control switching 4(dancer control)
2) Set the speed reference as override addition.
Item Title Function
Addition f660 Override addition input selection
*You can set override multiplication (f661) instead of f660, but it is difficult to set.
Usef660 please.
3) Select the input of process value (dancer position) and feedback value (dancer detection value).
Set each level converted into frequency for the setting.
Set the dead band for deviation of PID control if necessary.
Item Title Function
fmod Frequency setting mode selection 1 Process value
f207 Frequency setting mode selection 2
Feedback value f360 PID control feedback control signal selection
PID output dead
band f379 PID output dead band
*Frequency free unit covertion function enables to set process value and feedback value easily
See the chapter 7 for detail
4) Set the following parameters to suit the winder system if necessary.
Item Title Function
Operation by speed
reference only
(Dncer correction OFF)
Input terminal function:
94/95: Dancer correction OFF
Prohibit the reverse-run f311 Reverse- run prohibition selection
5) Set the following parameters to suit the motor if necessary.
Title Function
fh Maximum frequency
ul Upper limit frequency
ll Lower limit frequency
f270～f275
Jump frequency 1 to 3
f240
Operation starting frequency
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f241 Operation starting frequency hysteresis
f243 Stop frequency setting
6) Set the following parameters to suit the system.
a) Set the acceleration time and the deceleration time to small for quick response.
But too small setting cause inverter trip.
Title Function
acc Acceleration time 1
dec Deceleration time 1
b) Set the following parameters if necessary.
Item Title Function
f367 Process upper limit
Limit the input level of
process value. f368 Process lower limit
f370 PID output upper limit
Limit the PID output.
f371 PID output lower limit
Switc the PID forward
/reverse characteristic. Input terminal function:
54/55: PID forward/reverse switching
f374 Frequency command agreement detection rangeOutput of agreement signal
between process value
and feedback value.
<VF-PS1 only>
Output terminal function:
144 to 149: Frequency command agreement signal
7) Adjust the PID control gain.
a) Fundamental adjustment
Item Title Function
f362 Proportional (P) gain
f363 Integral (I) gain
PID control gain
f366 Differential (D) gain
b) Adjust the following parameters if necessary.
Deviation means difference between process value and feedback value.
Item Title Function
f364 PID deviation upper limit
Steady the PID control.
(Limit the PID deviation) f365 PID deviation lower limit
Start the PID control after
the system become stable. f369 PID control waiting time
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3. PID control type and parameters
The following is parameters for PID control.
Valid parameters are different from each PID control types, Process PID control, Speed PID control and
Dancer control.
* Override function of dancer control is different from the others. PID control type
○: valid ×: invalid △：*1
Title Function
Process type Speed type Dancer control
fmod Frequency setting mode selection 1 ○○○
fh Maximum frequency ○○○
ul Upper limit frequency ○○○
ll Lower limit frequency ○○○
acc Acceleration time 1 ○×○
dec Deceleration time 1 ○×○
f207 Frequency setting mode selection 2 ○○○
f240 Operation starting frequency ○○○
f241 Operation starting frequency
hysteresis
f243 Stop frequency setting ○○○
f270 Jump frequency 1 ○○○
f271 Jump step 1 ○○○
f272 Jump frequency 2 ○○○
f273 Jump step 2 ○○○
f274 Jump frequency 3 ○○○
f275 Jump step 3 ○○○
f311 Reverse- run prohibition selection ○○○
f359 PID control switching ○○○
f360 PID control feedback control signal
selection ○○○
f361Delay filter ×○×
f362Proportional (P) gain ○○○
f363 Integral (I) gain ○○○
f364 PID deviation upper limit ○○○
f365 PID deviation lower limit ○○○
f366 Differential (D) gain ○○○
f367 Process upper limit ○○○
f368 Process lower limit ○○○
f369 PID control waiting time ○○○
f370 PID output upper limit ○○○
f371 PID output lower limit ○○○
f372 Process increasing rate (speed type
PID control) ×○×
f373 Process decreasing rate (speed type
PID control) ×○×
f374 Frequency command agreement
detection range <VF-PS1 only> ○○○
f379 PID output dead band ××○
f660 Override addition input selection
△○
(Speed
reference)
f661 Override multiplication input
selection △
○
(Valid for
process
value) △
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E6581329①
f702 Frequency free unit display
magnification ○○○
f703 Frequency free unit conversion
selection ○○○
f729 Operation panel override
multiplication gain
<VF-AS1 only>
○○△
[Input/output terminal function] PID control type
○: valid ×: invalid △：*1
Terminal Function Process type Speed type Dancer control
PID control OFF selection ○○○
PID differentiation/integration reset ○○○
PID forward/reverse switching ○△△
Input
terminal Dancer correction OFF ××○
PID deviation limit ○○○
Frequency command agreement
signal (RR/S4) *2 ○○○
Frequency command agreement
signal (VI) *2 ○○○
Output
terminal
Frequency command agreement
signal (RX) *2 ○○○
[FM/AM pulse output and monitor output function]
Function PID control type
○: valid ×: invalid △：*1
FM/AM/pulse output Monitor output Process type Speed type Dancer control
Frequency command value ○○○
Speed feedback (real time value) ○○○
Speed feedback (1-second filter) ○○○
PID feedback value ○ ○ ○
－PID result frequency ○ ○ ○
－Synchronous speed
frequency command × × ○
*1: The functions are valid, but it is not used actually.
*2: VF-PS1 only
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4. Setting for PID control
First, set the process value and feed back value. : 4.1
Then, set other parameters to suit the motor and the system if necessary. : 4.2, 4.3
Note) It is necessary to convert the process value and feedback value into frequency for setting.
Actual output frequency is different from setting frequency of PID control.
4.1.Fundamental setting
You need to set process value and feedback value.
In case of process type PID control and dancer control, you need to set the acceleration time and the
decceleration time to small for quick response.
4.1.1. Feedback value
Input the signal from detecter as feedback signal.
1. Select the feedback input from f360.
Description PID control feedback control signal selection (f360)
Deviation input (no feedback input) 0
VI/II (voltage/current input) 1
RR/R4 (potentiometer/voltage input) 2
RX (voltage input) 3
Option AI1 (differential current input) 4
Option AI2 (voltage/current input) 5
PG feedback option 6
2. Convert the feedback input level into frequnency, and set it.
1) Analog input
See the chapter 6 for detail of analog input characteristic setting.
[Example of feedback setting]
Condition: Pressure control as PID control
Input the feedback signal of 1 to 2 atm into VI/II terminal by 4 to 20mA signal.
2 atm
1 atm
Feedback value Parameter
setting
(Converted frequency)
aif2
(60Hz)
f202
(0Hz)
20mA
f203
20mA 4mA
f201
20%
4mA
100%
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E6581329①
You can set the reverse characteristic or switch the characteristic.
a) Example of reverse characteristic setting
b) Example of switching characteristic by S3 input terminal (positive logic)
2) Optional terminal input
You can input the signal into optional terminals as same as anarog input.
See the section 6 for detail of input characteristic setting.
AI1: differential current input
AI2: voltage / current input
3) PG feedback input
It is used in speed PID control mainly.
Input by single-phase pulse in case of PG feedback for PID control.
Set pt (V/f control mode selection) except 7: PG feedback control and 8: PG feedback vector
control<VF-AS1 only>.
See the manual E6581319 for detail of PG feedback option.
E6581319: PG feedback board instruction manual
f202
(60Hz)
aif2
(0Hz) 4mA
f201
20mA
Parameter setting
(Converted frequency)
f203
１
S3 terminal ON
S3 terminal OFF
20mA
aif2
(60Hz)
f202
(0Hz)
4mA
f201 f203
100%
20%
Parameter setting
(Converted frequency)
*In case of switching characteristic by
input terminal, characteristic of process
value change too.
Title Function Example of setting
aif2 VI/II input point 2 frequency 60(Hz)
f117 Input terminal function selection 7 (S3) 54: PID forward/reverse switching
f201VI/II input point 1 setting 20(%)
f202VI/II input point 1 frequency 0(Hz)
f203VI/II input point 2 setting 100(%)
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E6581329①
[Example of PG feedback input]
a) Connection example
Connect single-phase pulse signal to A-NAterminals of PG feedback bord option.
Inverter
Pulse generator
VEC004Z
VEC005Z
VEC006Z
A
b) Parameter setting
Calculate the input pulse frequency to persent base data by the following.
Set the parameters of 2 input points.
Percent base data = Input pulse frequency ×100(%)
PG input pulse ×Maximum frequency
Percent base data
f236
100%
f235
0Hz
f237
60Hz
f234
0%
Frequency reference
NA
B
NB
PG
MCCB R/L1
S/L2
T/L3
U/T1
V/T2 IM
W/T3
ST
F
R
CC
Motor
Standby
Forward
(Reverse)
Common
* In case of VF-PS1, assign ST (Standby)
function to arbitrary terminal.
Connect the pulse generator
signal between A and NA.
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Title Function Adjustment range
Setting
(Example)
fh Maximum frequency 30.0～500.0 60.0（Hz）
f234 RP/hign speed pulse input point
1 setting 0 ~ 100 0(%)
f235 RP/hign speed pulse input point
1 frequency 0.0 ~ fh 0.0(Hz)
f236 RP/hign speed pulse input point
2 setting 0 ~ 100 100 (%)
f237 RP/hign speed pulse input point
2 frequency 0.0 ~ fh 60.0(Hz)
f375 Number of PG input pulses 12 ~ 9999 500
f376 Selection of number of PG input
phase
1: Single-phase input
2: Two-phase input
3: Two-phase input (Inversion of
polarity)
1
f377 PG disconnection detection
1: Disabled
2: Enabled (with filter)
3: Enabled (Detection of
momentary power failure)
1
Note) In case of using shaft built-in type PG, set the RP/hign speed pulse input point 2 to a multiple
number of “1/ (a half number of motor poles)”.
For example, set f236=50(%) in case of using shaft built-in type PG with 4-poles motor.
c) Previous check
You can check frequency reference from pulse input by monitor function previously.
Set the monitor selection to 1: frequency command.
See the section 8 of inverter instruction manual for the detail of monitor function.
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4.1.2. Process value
Input the target value against the feedback value as process value.
1. Select the process value input from parameter fmod or f207.
Description Frequency setting mode selection 1 (fmod)
Frequency setting mode selection 2 (f207)
VI/II (voltage/current input) 1
RR/S4 (potentiometer/voltage input) 2
RX (voltage input) 3
Operation panel input enabled (including LED/LCD
panel option input) 4
Operation panel RS485 (2-wire) communication input 5
Internal RS485 (4-wire) communication input 6
Communications option input 7
Optional AI1 (differential current input) 8
Optional AI2 (voltage/current input) 9
UP/DOWN frequency 10
Optional RP pulse input 11
Optional High-speed pulse input 12
- 13
Speed type
You can add or multiply for process value by override function.
Note) Dancer control use override addition function for speed reference.
2. Convert the feedback input level into frequnency, and set it.
<Note>
You need to input the process value less than maximum of feedback value.
If the process value is setted maximum of feedvack value or more, the feedback value reaches
maximum and the deviation becomes zero. The output frequency is fixed because the feedback
value does not become high level anymore.
You can set upper limit of process value input by parameter f367: Process upper limit.
1) Analog input
See the chapter 6 for detail of analog input characteristic setting.
[Example of process value setting]
Condition: Pressure control as PID control
Input the feedback signal of 1 to 2 atm into VI/II terminal by 4 to 20mA signal.
Input the process value into RR/S4 terminal by 0 to 10V signal.
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E6581329①
a) Example of system
Inverter
b) Parameter setting
Convert the feedback value and process value to frequency, and set each level.
Actual output frequency is different from these setting frequencies.
Note)
You need to input the process value less than maximum of feedback value.
For example, if you input the process value as 2 atm=10V(60Hz), the feedback value reaches
2 atm=20mA(60Hz) and deviation becomes zero. The feedback value can not exceed 20mA(60Hz)
even if the output becomes high level. Then output frequency is fixed.
.
Feedback value
4 ~ 20mA
Process value
0 ~ 10Vdc RR/S4
CCA
VI/II
R/L1
S/L2
T/L3
U/T1
Power supply V/T2
W/T3 Pressure
senso
r
M
P
Pump
1 to 2 atm
Feedback vale
2 atm
1.5 atm
1 atm 4mA 20mA
60Hz
0Hz 4mA 20mA
Feedback value (Converted frequency) 2 atm
10V
60Hz
Proces value Process value
(Converted frequency)
10V 0V
0Hz
1 atm
0V
1.5 atm
Pressure
(atm) Feedback value (4~20mA) Process value (0~10V) Converted frequency (Hz)
1 4 0 0
1.25 8 2.5 15
1.5 12 5.0 30
1.75 16 7.5 45
2 20 10 60
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Title Function Setting (Example)
RR/S4 input point 2 frequency
avf2 60(Hz)
aif2 VI/II input point 2 frequency 60(Hz)
Analog iVI/II voltage/current switching 1:
f108
f201 VI/II input point 1 setting 20(%)
f202
VI/II input point 1 frequency 0(Hz)
f203
VI/II input point 2 setting 100(%)
f210 RR/S4 input point 1 setting 0(%)
f211
RR/S4 input point 1 frequency 0(Hz)
f212
RR/S4 input point 2 setting 100(%)
2) Preset speed
[Example of process value setting]
Condition: Pressure control as PID control
Input the feedback signal of 1 to 2 atm into VI/II terminal by 4 to 20mA signal.
Input the process value into S1 and S2 terminals by preset speed (3 preset speeds) setting.
2 atm
1.5 atm
1 atm 4mA 20mA
60Hz
0Hz
Feedback value
(Converted frequency) Process value
(Converted frequency)
Feedback value
4mA 20mA
Preset speed 3: 45Hz (1.75 atm)
Preset speed 2: 30Hz (1.5 atm)
Preset speed 1: 15Hz (1.25 atm)
Process value
Pressure
(atm) Feedback value (4~20mA) Preset speed
1 to 3 S1 terminal S2 terminal
Converted frequency
(Hz)
1 4 - - - 0
1.25 8 1 ON OFF 15
1.5 12 2 OFF ON 30
1.75 16 3 ON ON 45
2 20 - - - 60
Title Function Setting (Example)
aif2 VI/II input point 2 frequency 60(Hz)
sr1 Preset speed operation frequency 1 15(Hz)
 Preset speed operation frequency 2 30(Hz)
 Preset speed operation frequency 3 45(Hz)
f108 Analog iVI/II voltage/current switching 1: Current input
f115 Input terminal function selection 5 (S1) 10: Preset speed 1
f116 Input terminal function selection 6 (S2) 12: Preset speed 2
f201VI/II input point 1 setting 20(%)
f202VI/II input point 1 frequency 0(Hz)
f203VI/II input point 2 setting 100(%)
Note) You need to input the process value less than maximum of feedback value.
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E6581329①
4.1.3. Override function
Speed type
You can add or multiply for process value by override function (f660, f661).
<VF-AS1only>
Multiplication gain is able to set by parameter f729.
See the inverter instruction manual for the detail of the setting.
*The functions are valid for process type PID control, but it is not used actually.
Dancer control
Dancer control uses override addition function (f660) for speed reference.
4.1.4. Acceleration and decleration time
Process type Dancer control
Set the acceleration time (acc) and the deceleration time (dec) to small for quick response.
But too small setting cause inverter trip.
Speed type
Speed PID control set the acceleration time and the deceleration time to the smallest automatically in
spite of parameter(acc,dec) setting.
*Adjust each gain in case of inverter trip. If you need to set the acceleration time and the deceleration
time larger, change the process type PID control.
4.2. Set to suit the motor
Set the following parameters to suit the motor if necessary.
These parameters are valid for actual output frequency (result of PID control).
Title Function Discription
fh Maximum frequency 1) Set the maximum frequency of output frequency.
2) It is base of the acceleration time (acc) and the
deceleration time (dec).
Acceleration time (acc) is from 0Hz to fh.
Deceleration time (dec) is from fh to 0Hz.
ul Upper limit frequency It is upper limit of output frequency.
ll Lower limit frequency It is lower limit of output frequency.
f270～
f275
Jump frequency
1 to 3 Set the jump frequency to avoid (jump) resonance frequency of machinery if necessary.
f240 Starting frequency
setting 1) Inverter output the frequency setted by f240 immediately. 2) It is useful for quick response of starting torque.
f241 Operation start
frequency Inverter operates RUN and STOP by f241 setting frequency
f243 Stop frequency
setting The output frequency is dropped to 0Hz at the frequency setted by f243.
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