Technical data
USM21A interface adapter | |
|---|---|
Part number | 28231449 |
Interference immunity | Complies with EN 61800-3 |
Ambient temperature | 0 – 40 °C |
Storage temperature | -25 – 70 °C according to EN 60721-3-3, class 3K3 |
Degree of protection | IP20 in accordance with EN 60529 |
Interfaces | RJ10 socket (device connection) USB socket type B (PC connection) |
Mass | 200 g |
Dimensions in mm (L × W × H) | 92.5 × 43 × 25 |
An order using part number 28231449 includes the following parts:
- USM21A interface adapter
- USB connection cable for the USM21A – PC connection
- Serial interface cable with 2 RJ10 connectors
INFORMATION

To connect the inverter to the USM21A, you need an additional serial interface cable with an RJ10 connector and a 9‑pin D‑sub connector, part number 18123864.
This cable must be ordered separately.

The CDM11A diagnostic module is required to connect the inverter to the USM21A interface adapter.
