Initial situation and fault pattern.
This repair case involved an Okuma Servo Drive Unit MIV0102A-1-B5 from the MIV series. The customer reported a periodically occurring Alarm 03 Inverter DC bus voltage error and additionally Alarm 05 Inverter ove...
Initial situation and fault pattern.
This repair case involved an Okuma AC spindle motor VAC-YMM45/37R-112, used together with an Okuma VAC II Drive Unit D45-A or 1006-1262. According to the nameplate, this is a spindle motor rated at 45 kW in 30 m...
Initial situation and fault pattern.
The repair case involved an Omron AC servo motor R7M-A20030 with external feedback via a Yaskawa encoder TRD-FY2000. The motor was delivered with the clearly stated fault pattern encoder no communication. For in...
Starting situation and fault pattern.
This repair case involved a Mitsubishi Servo Drive Unit MDS-B-V1-10. According to the nameplate, this is a servo drive from the MDS-B series with DC bus input from DC270 to 311 V, additional control voltage AC2...
Initial situation and fault pattern.
A Mitsubishi AC servo motor HF-SP2024JKW04, operated on a Mitsubishi MDS-DH-V2-1010 drive, was delivered for inspection. During operation, a communication alarm occurred repeatedly. The fault pattern was not per...
Initial situation and fault pattern.
In this repair case, a Yaskawa AC Servopack SGDB-44ADG was received. The unit displayed alarm A.40 after the axis enable was activated. According to the customer’s description, the fault occurred directly when...
Initial situation and fault pattern
In this repair case, a Yaskawa AC Spindle Motor UAASKB-11LYA11 with encoder UTMSI-10AAGAZA was delivered to our workshop. According to the customer, problems had occurred in the spindle drive. In addition, it was...
Initial Situation and Fault Pattern.
A sporadic alarm A.b1 occurred on an older CNC milling machine. The fault was irregular and therefore particularly critical from a diagnostic perspective. At first, a cable problem in the drag chain was suspecte...
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Initial situation and fault pattern.
The AC servo motor SGMP-02AWYR12 arrived from a Yaskawa robot in which the holding brake operates very frequently. The operator noticed that the axis no longer holds cleanly and motion became unstable. Shortly a...