Features:
- The booksize module diverts excess DC-link energy to an external braking resistor.
- A 770 V threshold controls the braking path across the 510 to 720 V DC operating range.
- Separate 24 V electronics, digital I/O and high-current busbars coordinate the module with the S120 drive.
Regenerative motor energy raises the voltage of the connected SINAMICS S120 DC link.
The braking module detects the threshold and switches the external resistor into the energy path.
The resistor converts the diverted energy into heat while digital status returns the module condition to the drive system.
The Siemens 6SL3100-1AE31-0AB1 SINAMICS S120 Braking Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6SL3100-1AE31-0AB1 SINAMICS S120 Braking Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Moving regenerative energy from the DC link to the resistor
- Operating range: The module works on a 510 to 720 V DC link.
- Activation: The braking path switches at the 770 V threshold.
- Peak path: Up to 100 kW is handled for two seconds.
- Continuous path: The documented rated braking power is 1.5 kW.
Keeping the external dissipation path within its wiring limit
- External resistor: Electrical braking energy is converted into heat outside the module.
- Cable boundary: The route to the braking resistor is limited to 10 m.
- Conductor layout: The resistor cable remains separate from low-voltage signal wiring.
- Thermal path: Resistor placement must allow the converted heat to leave the installation.
Separating control signals from power-current paths
- Digital inputs: Two inputs accept the documented -3 to 30 V signal range.
- Digital outputs: Two 24 V outputs carry up to 100 mA per channel.
- Control busbar: The 24 V busbar carries up to 20 A.
- DC link busbar: The high-voltage busbar path is rated for 100 A.
Relating power loss, airflow and booksize mounting
- Module loss: The braking module contributes 20 W of power loss.
- Cooling: Natural convection moves heat away from the enclosure.
- Mounting width: The 50 mm booksize width fixes the occupied drive-stack space.
- Air path: The 380 mm height and 270 mm depth remain clear for the documented installation.