Product Description:

The SM 35/8-GC16 is an AC inverter module engineered by Bosch Rexroth Indramat for the SM AC Inverters series. Installed in a single rack slot, it produces variable three-phase output from the internal DC link so motor speed and torque can be tuned to match real-time load demands in automated conveyors, presses, and packaging lines. Because the output voltage and frequency are regulated together, the module can support smooth starts, stable low-speed running, and controlled changes in process speed. This operating method is useful where process equipment must respond quickly to changing throughput or indexing commands without abrupt motor behavior. The module links directly to the plant controller through a CAN communication bus, translating PLC commands into pulse-width-modulated power while monitoring current, temperature, and fault states to maintain process stability.

The power section is energized from a DC link maintained at 325 VDC. Under natural convection, the unit supplies up to 3.5 A continuously, while a fan upgrade raises this capability to 6 A for applications that need more steady current. Short-duty acceleration is covered by a peak envelope of 8 A, supporting rapid speed ramps without tripping the drive. That combination supports both steady-state running and brief overload events during acceleration or transient load changes. The internal IGBT bridge switches at a carrier frequency of 10 kHz, which reduces motor acoustic noise and improves current linearity. Thermal loading of the switch stage is 8 W per ampere, and the electronic design conforms to climate class 3K3 for operation in industrial air free of conductive dust.

Total conversion losses amount to 13 W, so cabinet airflow or heat sinking only needs to accommodate a small heat load. The housing measures 60.36 mm in width and 262.1 mm in height, with a depth of 255.85 mm, allowing dense stacking in card frames or on suitable mounting structures. Its narrow front profile helps preserve panel space for adjacent power and control components. An ingress protection rating of IP20 means live parts are finger-safe, but the module should be installed in a closed enclosure where splash or debris exposure is possible. Overall mass is 2.4 kg, which keeps the unit compact enough for dense rack layouts without adding excessive load to the mounting system.