The Yaskawa AC servo motor SGM-08V3B4 was sent to industrypart for inspection and repair. The motor was installed in a rotary indexing unit used to position workpieces or components precisely at predefined angles.
According to the customer, the req...
The Okuma MIV03-1-B1, order number 1006-2213, is a single-axis servo drive unit for BL and PREX servo motors. The module is used in older Okuma CNC machines and is designed for a motor output of up to 3 kW.
The servo drive unit was sent to us with ...
The Mitsubishi MDS-C1-SPH-150 Spindle Drive Unit arrived at our workshop with an unusual fault pattern. The unit could be switched on, but it shut down again after only a few seconds. Shortly afterward, it attempted to start again.
This process rep...
A sporadic encoder fault is particularly critical in a CNC machine: the motor may initially operate without any abnormalities, while the feedback intermittently fails and the machine control interrupts the machining process. This was exactly the fault...
Machine Downtime Caused by a Failed Mitsubishi Servo Drive
For the operator, the failure caused an immediate standstill of the affected machine function. Because the drive amplifier no longer powered up, no regular alarm code was available. The...
With older CNC machines, a failed servo motor is often not simply an electrical defect. Especially in motors that have operated for many years in close proximity to the machining area, coolant, oil, contamination, and aging seals can gradually cause d...
Many older CNC machines continue to operate reliably even after 15, 20 or even 30 years. Mechanically, these machines are often still in good condition. Nevertheless, as they age, faults in servo drives, spindle drives, frequency inverters, power supp...
The Mitsubishi MDS-DM-V3-404040, alternatively also referred to as MDSDMV3-404040, came to us with a particularly interesting fault pattern. During normal machine operation, initially no fault could be detected. The machine could start and operate. On...
Initial situation and fault pattern.
In this case, the unit involved was a Yaskawa SERVOPACK SGD7S-R90A20A. The device came to us with alarm A.EC8. According to the customer, the fault could still be acknowledged at first. The drive then ran again,...
The failure of a servo amplifier in industrial production often occurs without any prior warning. While some systems initially exhibit sporadic faults or communication errors, other cases result in a complete loss of functionality. This was exactly th...