Introduction; Functions - Toshiba TOSVERT VF-S15 Instruction Manual

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, 4 only)
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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