Initial Situation at the Customer Site
The Yaskawa CIMR-MRXN2011 converter from a STAR Micronics CNC machine was sent to us after the operator experienced increasingly unstable machine startups. The machine showed a very specific pattern: on the fi...
Repair of a Yaskawa SGMGH-05ACA2C with encoder malfunction, full diagnosis, overhaul and load test.
The motor was sent to us because it repeatedly caused faults at certain rotational speeds, especially above 1000 rpm, and the servo amplifier report...
Initial Situation.
The Yaskawa SGMKS-20A5A-MU11 was removed from a machining center using a Siemens–Yaskawa hybrid control system. The customer initially observed a motor short circuit, followed by encoder faults. The drive repeatedly shut down d...
Initial situation
The delivered Yaskawa AC servo motor SGMDH-32A2A-YR33 showed sporadic encoder errors for an extended period. The customer had previously purchased a supposedly matching UTSAE-B17BB encoder and installed it himself. After installat...
When the Fanuc A06B-6117-H303 Servo Drive Unit arrived at our workshop, the error was already clear: The machine shut down immediately after servo power-up, accompanied by the alarm “DC Bus Overcurrent”. The customer reported that the machine stop...
Initial Situation and Error Pattern
The Omron AC servo motor R7M-A10030-BS1 was sent in by the customer because the axis had become unreliable during production and repeatedly stopped without warning. The corresponding servo drive R7D-AP01H Ver.22 ...
Repair of a Mitsubishi MDS-B-CV-75 with voltage drops under load
The MDS-B-CV-75 arrived in our workshop with a very typical description from the production floor. The machine seemed to run fine in idle mode but under heavy cutting or when several ...
Initial Situation and First Symptoms.
The Yaskawa SGM-08V316S was delivered by the customer with the alarm A.84. This alarm clearly indicates an encoder malfunction and typically appears on incremental encoder systems when the A/B/Z signals drift o...
Initial Condition and Symptoms
The Yaskawa SGMGS-05A5W-SE12 was sent to industrypart GmbH for a complete standard overhaul. The motor showed minor bearing wear and inconsistent encoder feedback. It had been operating in a CNC axis under continuous ...
Check security and performance
Whether repairing or maintaining HAAS equipment:Only systematic testing and inspection can ensure long-term reliability and protect against unplanned downtime.
Test procedures for HAASHP Vector Drives and Servo Amp...