Initial situation and fault symptom.
A Mitsubishi Servo Drive Unit MDS-DH2-V2-8080 from a CNC drive environment was delivered. During the functional test, the unit showed no expected response. The front LED display appeared frozen, without a plausi...
Initial situation and fault symptoms
The examined servo motor is a Yaskawa AC servo motor from the SGMM series with the model designation SGMM-B5SF13. A position feedback device type UTOPI-20ANS encoder is installed in this motor. The motor operate...
Initial situation and fault symptoms.
The servo drive Sanmei QT-002AXE-ST was received in the workshop from a CNC Swiss-type lathe machine. These drives are frequently used in Star machines and control feed axes or auxiliary functions.
The opera...
Initial Situation and Fault Description.
In a machine tool the spindle suddenly stopped during machining. The spindle drive shut down without prior warning. After a short waiting period the machine could be restarted, but after a few minutes of mac...
Initial situation and fault picture.
The Okuma Driver Unit MIV06DB-1-B5 (Okuma part number 1006-2265) came from a CNC system with error number 13, which was permanently active. The fault could neither be cleared by reset nor by switching on again. ...
Initial situation and fault symptoms
In a machine tool, a servo alarm A.84 occurred repeatedly. The affected component was an AC servo motor of type Yaskawa SGMPH-08A1A4S with an incremental encoder UTSAH-B16DC-E.
The error initially appeared sp...
Initial situation and fault description
The submitted servo motor Yaskawa SGMGH-03A5A-SE16 originates from a Star CNC lathe and operates together with a Yaskawa Servopack SGDK-050505AEA-V. The customer reported an encoder fault that appeared immedi...
Initial Situation and Observed Fault.
A Yaskawa SGDH-20AE AC Servopack was received for repair due to intermittent shutdowns during machine operation. The customer reported that the servo drive stopped randomly and then restarted after resetting th...
Initial situation and fault description.
The Yaskawa AC Servo Motor SGMPH-15A1A6D was delivered from a machine tool after the axis of the machine could no longer be enabled. When the servo drive was switched on, the alarm Al.84 appeared immediately...
Initial situation and fault pattern.
A Mitsubishi spindle drive unit type MDS-DH-SP-200 arrived in the workshop with an intermittent fault. In the machine, the front display showed code 3D, but only after a certain machining time. The display alter...