Following is an application featured on the Lenze AC Tech website. The customer was an engine starter gear manufacturer and the application was a gear testing machine. The product used was a PositionServo Drive.
Twin PositionServos Gear Up Engine Starters
A manufacturer of gears for automotive engine starters recently incorporated two Lenze-AC Tech PositionServo drives into it’s test process. Test engineers chose the PositionServo for two distinct features: its integrated motion control for direct connection to an upline PLC and its intuitive interface for easy operator control. Two seemingly dissimilar features of a servo drive but a true benefit of the PositionServo drive.
The two PositionServo drives provide precise motion and torque control required on the threaded spindles, an integral part of the machine that tests the gears of the automotive engine starters. The two drives start simultaneously yet run independently, rotating the spindles to a set revolution limit while also monitoring the torque on the spindles. If the torque reaches a preset maximum value set by the EPH-H315 HMI, then the operator receives a fault message indicating sub-par threads.
The main system PLC is informed of the test failure in addition to the HMI. After acknowledgement by the PLC, both PositionServo drives revert to unscrewing mode and return the spindles to home position. The test cycle is fully automatic, however with the inclusion of the HMI, the operator is able to cycle each drive in manual mode if the need arises. Additionally, the fault diagnostics and status functions of each PositionServo are displayed on the HMI in real-time.
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