The application of INVT GD300-69 Inverter in the construction elevator

INVT GD300-69 elevator has no impact and decline phenomena while start and stop, runnign smooth without shaking

Construction hoist is the essential device in a modern high-rise building construction, the traditional construction elevator generally uses the contactor - relay control, direct start and mechanical brake forced braking, and the large brake impact has greatly affected the service life of mechanical structure. In terms of construction machinery exhibition in recent years, variable frequency construction ladder has occupied larger proportion and become the inevitable trend of development.

INVT follows the development of times and studies the construction mechanical industry, push forward GD300-69 elevator/tower crane special inverter, this paper is the on-site application of INVT GD300-69 in a Shandong large-scale machine customer.

The application is a Shangdong Construction Machinery

Company, on-site construction elevator drive mechanism is 2 motor worm gear drive system.

Motor : 2 sets Dongqiang motors YZZ132M-4, each rated power is 11KW, 2 polars , rated current 29A, rated voltage 380V, frequency 60HZ, rotational speed 1668 r/m.

Reducer : 2 sets Shandong Jiuhong reducer, each rated power is 11KW, reduction ratio of 16:1, turbo – worm type.

Brake: 2 Dongqiang DC brakes, rated voltage 195Vdc, current 0.84A, insulation F grade, braking torque 120.

Customer demand: fast start, short glissade distance stop, simple debugging, with the default phase protection and disconnection protection and other functions.

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