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...
The returned unit showed Alarm 20 Motor Over Current immediately after power-up. During the initial inspection, it was determined that the internal fan had completely failed. This caused heat accumulation in the power section, leading to uneven therma...
A customer personally delivered a defective Fanuc Power Supply Module A06B-6087-H126 to our repair center.The machine was completely down, and a replacement from the OEM would have cost over €7000, with more than a week of lead time.We accepted the ...
The CACR-SR20SB1BFY100 arrived at our workshop with a clear report: “Output W shorted.” During the initial inspection, a direct low-resistance path was detected between the W terminal and the DC bus an unmistakable sign of an internal short circui...