FAILURE SIGN DIAGNOSABLE DRIVE DEVICE

Provided is a drive device capable of diagnosing a failure sign, the drive device having functions of diagnosing the failure sign of a power device; performing load drive control by restricting operation of the power device with the failure sign or by excluding the power device; and suppressing shortening of a replacement cycle of the power device. A drive device includes power devices to that drive a load, characteristic sensors to that detect characteristics of the power devices to , respectively, a sensing result holder that holds detection results acquired by the characteristic sensors to in time series, control signal change units and that each detect a failure sign of each of the power devices to from the detection results in the sensing result holder and output a control change signal, and a drive controller that controls drive of the power devices to . When detecting the failure sign of each of the power devices to based on a control threshold to detect the failure sigh of each of the power devices to , the control signal change units and each output a control change signal to the drive controller to drive a load using the power devices to excluding the power devices to detected.