Toshiba TOSVERT VF-S15 series User manual

E6581871①
TOSVERT VF-S15
Functions for lift application Instruction Manual

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- Contents -
1. Introduction .................................................................................................２
2. Functions.....................................................................................................２
3. Light –load high-speed operation function...............................................３
3.1 Related parameters............................................................................................................３
3.2 Mode description.............................................................................................................４
3.2.1 Automatic setting mode of high-speed operation speed (f328=1, 2)................６
3.2.2 Fixed setting mode of high-speed operation speed (f328=3, 4).......................８
3.3 How to adjust parameters ...............................................................................................１０
3.3.1 Automatic setting mode of high-speed operation speed (f328=1, 2)............１０
3.3.2 Fixed setting mode of high-speed operation speed (f328=3, 4)....................１２
3.3.3 Frequency switching Acceleration/deceleration at light load (f339)...............１３
4. Brake sequence functions......................................................................１４
4.1. Standard connection for lift application .......................................................................１４
4.2 Parameter adjustment procedure for brake sequence function .................................１５
4.3 Setting sample of related parameters..................................................１６
4.4 Brake sequence function.................................................................................................１８
4.4.1 Parameters for brake sequence functions..............................................................１９
4.4.2 Execution of "Brake time learning"..........................................................................２２
4.4.3 Brake timing with maximum load.............................................................................２３
4.4.4 Abnormal phenomenon and the measures.............................................................２４

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1. Introduction
TOSVERT VF-S15 has effective functions for lift application.
This instruction manual explains the light-load high-speed operation function and the brake sequence
function of VF-S15 for crane and hoists applications.
<Note>
This instruction manual mentions factory specific coefficient parameters.
2. Functions
VF-S15 has the following functions for lift application.
Use of vector control is based on the execution of brake sequence function or light-load high-speed
operation. Therefore, set au2 (Torque boost setting macro function) =2(Vector control + auto-tuning), or
set motor related parameters, f410 - f417, and pt (V/F control mode selection) =3(Vector
control).
1) Light-load high-speed operation function
This function enhances the operating efficiency of the machine by increasing the rotational speed of the
motor in case of light load operation.
This function is useful for lifts and material handling applications which repeatedly drive light and heavy
loads.
The learning function of VF-S15 simplifies the adjustment of light-load high-speed operation, just to
execute the forward run (up) or reverse run (down) operation. (f328=3, 4only)
2) Brake sequence function
To ensure smooth operation, the motor produces enough torque before the brake is released.
The learning function for brake timing simplifies rough adjustment of creeping frequency, creeping time
and brake release time.

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3. Light –load high-speed operation function
3.1 Related parameters
Title Commu nication
No. Function Adjustment range
Minimum
setting unit
(Panel/
Communication)
Default setting
f327 0327 Offset of light load measurement
torque 0-2000 (%) - 1000
f3280328 Light-load high-speed operation
selection
0:Disabled
1: High-speed operation speed set automatically
(Power running at F command: Increase)
2: High-speed operation speed set automatically
(Power running at R command: Increase)
3: High-speed operation speed set with f330
(Power running at F command: Increase)
4: High-speed operation speed set with f330
(Power running at R command: Increase)
- 0
f3290329 Light-load high-speed learning
function
0:No learning
1:Forward run learning
2:Reverse run learning
- 0
f3300330 Automatic light-load high-speed
operation frequency 30.0 - ul (Hz) 0.1/0.01 (*1)
f3310331 Light-load high-speed operation
switching lower limit frequency 5.0 - ul (Hz) 0.1/0.01 40.0
f3320332 Light-load high-speed operation
load waiting time 0.0 - 10.0 (s) 0.1/0.1 0.5
f3330333 Light-load high-speed operation
load detection time 0.0 - 10.0 (s) 0.1/0.1 1.0
f3340334 Light-load high-speed operation
heavy load detection time 0.0 - 10.0 (s) 0.1/0.1 0.5
f3350335 Switching load torque during power
running -250 - 250% 1/0.01 50
f3360336 Heavy-load torque during power
running -250 - 250% 1/0.01 100
f3370337 Heavy-load torque during constant
power running -250 - 250% 1/0.01 50
f3380338 Switching load torque during
regenerative braking -250 - 250% 1/0.01 50
f339 0339 Frequency switching Acceleration/deceleration at light
load 0 - ul (Hz) 0.1/0.01 0.0
(*1) Default setting values vary depend on the setup menu setting.
Note 1: Parameters f335 to f338 need adjustment according to the load.
The learning function of VF-S15 simplifies the adjustment of light-load high-speed operation, just
to execute the forward run (up) or reverse run (down) operation. (f328=3, 4only)
Note 2: If the judgment whether or not switching to light-load high-speed operation differs from when the
motor is cold and when the motor is hot, set the value of f327 larger. Usually, it is set with the
default setting value.
Note 3: When operating light-load high-speed operation, use vector control. Set au2 (Torque boost
setting macro function) =2(Vector control + auto-tuning), or set motor related parameters f410
to f417, and pt (V/F control mode selection) =3(Vector control).

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3.2 Mode description
The light-load high-speed operation includes the modes below:
Each mode can be set by the light-load high-speed operation selection (f328).
Title/function Default setting Action
f328
Light-load
high-speed
operation
selection
0: Disabled Light-load high-speed operation
disabled.
1:High-speed operation speed set automatically
(Power running at F command: Increase) When inverter judges to be light-load,
the high-speed operation frequency
is automatically set according to a
detected torque.
2:High-speed operation speed set automatically
(Power running at R command: Increase)
3:High-speed operation speed set with f330
(Power running at F command: Increase) When inverter judges to be light-load,
the operation is set to the automatic
light-load high-speed operation
frequency (f330).
4:High-speed operation speed set with f330
(Power running at R command: Increase)
Example: If automatic setting mode of high-speed operation speed is used,
set f328 to 1for F (forward command): Up
set f328 to 2for R (reverse command): Up
Note: Light load output and Heavy load output conditions of output terminal functions are different
according to f328 setting.
1) f328 (Light-load high-speed operation selection) =0
Light load output (Function No. 106/107):
ON: The absolute value of the detected torque is under the absolute value of f335
(Switching load torque during power running)
Light load output (Function No. 164/165):
ON: The absolute value of the detected torque is under the absolute value of f335
(Switching load torque during power running)
Heavy load output (Function No. 108/109):
ON: The absolute value of the detected torque is the absolute value of f337 (Heavy-load
torque during constant power running) or more
Note) Function No. 106/107 and No.164/165 are same action when f328=0. Each action is
different when f328 setting is not 0.
Function No.108
Function No.164
f335
f335
Torque
Function No.106
0%
f337
f337

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2)f328 (Light-load high-speed operation selection) setting is not 0
Light load output (Function No. 106/107)
ON: The inverter judges that the light-load high-speed operation is possible during light-load
judgment time, and heavy-load is not detected during light-load high-speed operation.
When HSLL (Light-load high-speed operation prohibitive signal) is ON before light-load
high-speed operation, light-load output is not ON while HSLL is ON.
Light load output (Function No. 164/165)
ON: The inverter judges that the light-load high-speed operation is possible during light-load
judgment time, and heavy-load is not detected during light-load high-speed operation.
The signal is not dependent on HSLL (Light-load high-speed operation prohibitive signal).
Heavy load output (Function No. 108/109)
ON: When heavy-load is detected.
Function No.106
Function No.164
Function No.108
Out
p
ut fre
q
uenc
y
HSLL
Light-load judgment time
HSLL =OFF
OFF
RUN
Function No.106
Function No.164
Function No.108
Output frequency
HSLL
Light-load judgment time
HSLL =OFF->ON->OFF
RUN

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3.2.1 Automatic setting mode of high-speed operation speed
(f328=1, 2)
The diagram on the next page (Fig.1) is the timing chart when the automatic setting mode of high-speed
operation speed (f328=1) is applied to lift application.
At the operation frequency of the light-load high-speed operation switching lower limit frequency (f331)
or more (point A in the Fig.1), if a detected torque (*1) after reaching the set speed is the switching load
torque during power running (f335 setting value) or less, the inverter judges that the load is light.
For light-load operation, the frequency decided with the following formula is determined as a target
frequency (high-speed operation frequency) and the operation is accelerated toward the target frequency.
(Point B in the Fig.1 Light-load high-speed operation)
Target frequency = (Value set with f335) × [Base frequency (vl)] / (The detected torque)
when target frequency ≦ ul (≦fh)
(*1) Average torque during light-load high-speed operation load detection time (f333) after light-load
high-speed operation load detection waiting time (f332) (5% or more)
Light-load detection is carried out after reaching the set speed and when an operation frequency is the
light-load high-speed operation switching lower limit frequency (f331) or more.
When reaching the conditions below, the light-load high-speed operation is canceled and the operation is
returned to the operation at the frequency of speed command value.
1) The detected torque exceed the following the judgment value during acceleration up to the
high-speed operation frequency.
The detected torque (*1) + (Heavy-load torque during power running (f336) – Switching load
torque during power running(f335)(0% or more) )
2) The detected torque exceed the following the judgment value after reaching the target frequency
and after a lapse of the light-load high-speed operation heavy load detection time (f334).
The detected torque (*1) + (Heavy-load torque during constant power running (f337) –
Switching load torque during power running (f335) (0% or more))
3) The speed command value under the light-load high-speed operation switching lower limit frequency
(f331) is entered.
4) The Light-load high-speed operation prohibitive signal is ON.

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Fig.1
《Example of operation》Light-load high-speed operation selection
(f328=1: High-speed operation speed set automatically): F (Up)
Light-load high-speed operation
Heavy-load torque during
power running f336
Switching load torque
during power running
f335
B
Light-load high-speed
operation switching lower
limit frequency f331
ON
OFF
Torque (%)
A
Output terminal: Light load output
Function No.106
Operation frequency (Hz)
Heavy-load torque during
constant power running
f337
ON
OFF
Operation signal (F)
ON
f102
Speed reach
detection band
f102
Speed reach
detection band
Light-load high-speed operation load
waiting time f332
Light-load high-speed operation
load detection time f333
Light-load high-speed operation
heavy load detection time f334
High-speed operation frequency
varies with load torque.
Speed reach signal
ON
OFF

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3.2.2 Fixed setting mode of high-speed operation speed
(f328=3, 4)
The diagram on the next page (Fig.2) is the timing chart when fixed setting mode of the high-speed
operation speed (f328=3) is applied to lift application.
At the operation frequency of the light-load high-speed operation switching lower limit frequency (f331)
or more (point A in the Fig.2), if an average torque during the light-load high-speed operation load
detection time (f333) after reaching the set speed and after a lapse of the light-load high-speed
operation load detection waiting time (f332) is under the switching load torque during power running
(f335), the inverter judges that light-load is detected and accelerates up to an automatic light-load
high-speed operation frequency (f330). (Point B in the Fig.2 Light-load high-speed operation)
Load torque detection is carried out when an operation frequency is the light-load high-speed operation
switching lower limit frequency (f331) or more and after reaching the set speed.
When reaching the conditions below, the light-load high-speed operation is canceled and the operation is
returned to the operation at the frequency of speed command value.
1) The torque is exceeded the heavy-load torque (f336) during acceleration up to the automatic
light-load high-speed operation frequency (f330).
2) The torque is exceeded the heavy-load torque during constant power running (f337) after
reaching the automatic light-load high-speed operation frequency (f330) and after a lapse of the
light-load high-speed operation heavy load detection time (f334).
3) The speed command value under the light-load high-speed operation switching lower limit frequency
(f331) is entered.
4) The Light-load high-speed operation prohibitive signal is ON.

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Fig.2
《Example of operation》Light-load high-speed operation selection
(f328=3: High-speed operation set with f330): F (Up)
Heavy-load torque during
constant power running
f337
f102
Speed reach
detection band
f102
Speed reach
detection band
Light-load high-speed operation
load waiting time f332
Light-load high-speed operation
load detection time f333
Light-load high-speed
operation heavy load detection
time f334
Automatic light-load high-speed
operation frequency f330
Light-load high-speed
operation switching lower
limit frequency f331
Light-load high-speed operation
ON OFF
ON
OFF
Torque (%)
Output terminal: Light load output
Function No.106
Operation signal (F)
Heavy-load torque during
power running f336
Switching load torque
during power running
f335
A
B
Speed reach signal
ON
OFF