Income tax depreciation calucation

Dear Team,

Asset purchased as on 15.01.2015 and  percentage is 60% as per depreciation key. Asset value is 1,00,000 and depreciation is 60000 as per income tax depreciation key. But the asset is less than 180 days . We want to calcuate the depreciation only for 30000 i.e 50% of 60000. Kindly request to check & revert

Regards,

Sai