Safety control circuit applied to turning motor of fan system

The utility model discloses a safety control circuit applied to a turning motor of a fan system. The safety control circuit comprises a first branch circuit, a second branch circuit and a third branch circuit which are sequentially arranged in parallel, two ends of the first branch circuit, the second branch circuit and the third branch circuit are correspondingly connected with two ends of the power supply; the turning motor is started by the soft starter, so that impact-free smooth starting in the whole starting process of the motor can be realized, various parameters in the starting process can be adjusted according to the characteristics of the motor load, and damage to mechanical equipment such as a gear box and the like at the starting moment is avoided; in addition, by controlling a barring motor meshing limit switch 7XWK1, a barring motor shield limit switch 7XWK2 and a 1 # lubricating oil pump motor operation state auxiliary contact 1KA1 or a 2 # lubricating oil pump motor operation state auxiliary c