Toshiba Toshiba Schneider Inverter Corporation

Overhead travelling cranes [Hoisting equipment]

 Application samples

Overhead travelling cranes usually use the following operating methods:

[Lifting motors]
- Vector control without sensor
- Brake functions
- Preset speed control
- High speed operation at light weight

[Traversing and running motors]
- S pattern accelertion/deceleration
- Acceleration/deceleration 1 and 2 switching

  Setting table for inverters (VF-AS1)

Overhead travelling cranes usually have remote control unit.
Button Action

Title Function Setting range Recommended setting
Base frequency 1 25 ot 500 Hz 52
Base frequency voltage 1 200V input model: 50 to 330 V
400V input model: 50 to 660 V
Depends on the motor
Dynamic braking selection 0 to 2 1 (Enabled)
Dynamic braking resistance 0.5 to 1000 ohm Depends on the resistor

Dynamic braking capacity 0.01 to 600 kW Depends on the resistor

Input terminal function selection 7 (S3) 0 to 135 20

Light-load high-speed operation selection 0 to 4 Depends on the system

Braking mode selection 0 to 3 Depends on the system

Motor rated capacity (motor name plate) 0.10 to 500.0 kW Depends on the motor

Motor rated current (motor name plate) 0.1 to 2000 A Depends on the motor

Motor rated rotational speed (motor name plate) 100 to 60000 min-1 Depends on the motor

  Auto-tuning function (VF-AS1)

After setting these parameters, please perform the following steps.

(1) Set F400(Auto-tuning 1) = 4(Motor constant auto calculation).
(2) Connect the motor wiring.
(3) Set F400 = 2(Continue operation after auto-tuning).
(4) Turn on the start signal.

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