Product Description:

The HLT01.1N-01M1-A-007-NNIT braking module is produced by Bosch Rexroth Indramat for the HLT Braking Units series. In electrically regenerative axes, the unit diverts excess DC bus energy to an internal resistor so drive inverters and connected motors avoid damaging overvoltage. By providing this energy-dissipation path, it supports reliable stop sequences and speed reversals across automated packaging lines, gantry stages, and material-handling cells. This function is especially useful where frequent deceleration causes regenerated energy to accumulate faster than the connected drive system can absorb it. It also helps stabilize bus conditions during repeated braking events without requiring a separate external dissipation assembly.

This model is intended for free panel mounting and belongs to climatic class 3K3, meaning it may be installed in control cabinets where moderate dust and moisture are present. Its terminals and housing satisfy a protection rating of IP20, while all exposed conductive parts follow protective-earth requirements under Class 1. Continuous service is specified up to an altitude of 1000 m without reduction in braking duty. For thermal limits, ambient air around the heat sink must remain at or below +40 °C. When running at that temperature, the circuitry may still be exposed to a relative humidity of 95% RH, provided condensation is prevented by cabinet design. The braking resistor and control electronics are also compatible with IT nets, allowing operation on unearthed industrial power networks where line-to-ground faults are monitored differently than in TN systems. This makes the unit suitable for installations that require controlled braking performance in enclosed electrical cabinets with standard industrial grounding practices.

The mechanical endurance ratings complement these environmental limits. During handling or seismic events, the assembly withstands shocks of 4 g for 11 ms. While in operation, it endures vibrational acceleration of 0.6 g from 10 Hz to 200 Hz, and a peak displacement of 1.5 mm between 3 Hz and 10 Hz, helping the module remain stable on moving machinery frames. For storage or shipping, the module tolerates temperatures down to −25 °C and up to +70 °C, protecting the resistor insulation and control relays until final installation. These limits are useful in applications where equipment may be transported, stored, and later installed in production systems that experience regular machine vibration.