Toshiba TOSVERT VF-S15 series User manual

E6581871①

TOSVERT VF-S15

Functions for lift application Instruction Manual

E6581871

１

- 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

Torque

Function No.106

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

ut fre

uenc

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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７

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

Light-load high-speed

operation switching lower

limit frequency f331

OFF

Torque (%)

Output terminal: Light load output

Function No.106

Operation frequency (Hz)

Heavy-load torque during

constant power running

f337

OFF

Operation signal (F)

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

OFF

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８

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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９

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

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

Speed reach signal

OFF

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