Siemens 6SL3100-1AE31-0AB0 SINAMICS S120 100 kW Braking Module
Booksize DC-link braking module with 100 kW peak and 1.5 kW continuous braking capability.
01Product Profile
Siemens 6SL3100-1AE31-0AB0 is a SINAMICS S120 booksize Braking Module for 510 to 720 V DC-link systems. It switches an external braking resistor when the DC link reaches the documented 770 V threshold, providing up to 100 kW peak braking power for short-duration energy dissipation and 1.5 kW continuous braking power. Siemens identifies the article as discontinued and names 6SL3100-1AE31-0AB1 as its replacement type.
02Technical Data
| Manufacturer | Siemens |
|---|---|
| Article Number | 6SL3100-1AE31-0AB0 |
| Product Designation | SINAMICS S120 Braking Module Booksize |
| DC-Link Voltage | 510 to 720 V DC |
| Switch-On Threshold | 770 V DC |
| Maximum Braking Power | 100 kW |
| Peak Duration | 2 s in the product description |
| Continuous Braking Power | 1.5 kW |
| Electronics Supply | 24 V DC; permissible range 20.4 to 28.8 V |
| Electronics Current | 0.5 A |
| DC-Link Busbar Capacity | 100 A DC |
| 24 V Busbar Capacity | 20 A DC |
| Power Loss | 20 W |
| Cooling | Natural convection |
| Successor | 6SL3100-1AE31-0AB1 |
| Lifecycle | Discontinued since 30 September 2017 |
03System Role
Control Function
- Dissipates regenerative energy that cannot remain in the S120 DC link.
- Works with an externally selected braking resistor and protected braking circuit.
- Limits excessive DC-link voltage during rapid deceleration or overhauling load conditions.
- Forms a DC-link accessory and does not replace an Active or Smart Line Module.
- Must be sized from the real braking energy, duty cycle and resistor thermal capacity.
Key Capabilities
- Monitors the SINAMICS S120 DC link and switches an external braking resistor.
- Supports 100 kW peak braking power for short-duration regenerative events.
- Provides 1.5 kW continuous braking-power capability.
- Uses a documented 770 V DC switch-on threshold.
- Requires a separate 24 V electronics supply and relies on natural convection.
- Carries the booksize DC-link and 24 V busbars through the module.
04Compatibility
- Use only on a compatible 510 to 720 V SINAMICS S120 DC link.
- Select the braking resistor and cable length according to Siemens engineering rules.
- Verify the 100 kW peak and 1.5 kW continuous duty against the machine braking cycle.
- Provide the 24 V supply and unobstructed natural-convection cooling.
- Follow DC-link discharge and zero-voltage verification before installation or removal.
- Evaluate successor 6SL3100-1AE31-0AB1 against the installed functional state and system documentation.
05Applications
- Rapid stopping of high-inertia SINAMICS S120 axes.
- Overhauling loads that regenerate energy into the common DC link.
- Machines without another path for the required short-duration braking energy.
- Maintenance replacement in legacy S120 booksize systems.
- Lifecycle migration to the Siemens-designated AB1 replacement after an engineering review.
06FAQ
What braking output is stated for 6SL3100-1AE31-0AB0?
The official product description specifies 100 kW peak output for 2 seconds, while the manual lists 1.5 kW continuous braking power.
At what DC-link voltage does the braking function switch on?
Siemens specifies a 770 V DC switch-on threshold.
Which DC-link range is supported by the booksize module?
The technical data lists 510 to 720 V DC.
How is the module cooled?
It uses natural convection and must be installed with the required clearances.
What replacement article does Siemens identify?
Siemens names 6SL3100-1AE31-0AB1 as the replacement type for the discontinued AB0 article.
How should the external braking resistor be selected?
Select it from the official resistance, peak power, continuous power, cable-length and duty-cycle requirements for the actual machine braking energy.
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