Reading the lifecycle signal first
The LXM23DU55M3X is flagged obsolete on the manufacturer's record, so the conversation shifts from new-channel catalog stock to independent supply and last-buy inventory — what is on the market now is what stays on the market. For a procurement line, that changes the RFQ posture: lead time and unit availability are confirmed only when a quote is opened, and any board revision that swaps this drive in must be planned as a one-way move with no factory replenishment behind it.
What the part is and where it sits in the cabinet
The LXM23DU55M3X is a motion servo drive from the Lexium 23 Plus series, packaged in the book format that mounts side-by-side in a control cabinet and pairs with a matching Lexium 23 motor for position, velocity, or torque control.
Power rating and how it sizes to the motor
Nominal power is 5.5 kW at 220 V with a continuous output current of 40 A — the 5.5 kW figure is the sizing number for matching a Lexium 23 servo motor in the same frame, not a mechanical shaft rating, and the 40 A continuous figure is the thermal ceiling that the motor's continuous current must sit under at the worst-case ambient. Output voltage is given as 1000 to 2000 m with continuous power derating of 1 % per 100 m of altitude — at a 1500 m panel installation the continuous output drops to roughly 95 % of nameplate, and at 2000 m it drops another 5 %, which matters for high-altitude cabinets where the motor may need to be sized down or the drive de-rated. Maximum leakage current is 3.5 mA, above the 3.5 mA threshold that triggers the IEC 61800-5-1 fixed-installation PE requirement — the cabinet PE conductor must be sized accordingly and any upstream RCD must be of the type tolerant to pulsed DC leakage, otherwise the drive trips on first power-up.
Sourcing posture for a discontinued servo drive
With the part flagged obsolete, independent distribution channels hold the remaining factory-traceable stock — quote the BOM quantity and the supply window is confirmed against what the channel can pull from current inventory; no factory replenishment is behind this code. Plan for the next revision now: if the cabinet design will run another five to ten years, evaluate the current-generation Lexium successor or a comparable three-phase servo drive before the independent channel runs dry — leaving a discontinued drive in a long-lifecycle machine is the most expensive way to find out stock is gone.