Siemens 6SL3210-1KE18-8AB1 SINAMICS G120C Converter
A filtered 400 V-class compact converter rated for 4.0 kW low-overload duty, with integrated drive I/O and Safe Torque Off.
Overview
6SL3210-1KE18-8AB1 is a SINAMICS G120C compact converter for three-phase 380 to 480 V supply systems. It combines the power stage, control functions, standard I/O and serial fieldbus in the FSA enclosure.
This article is the specified successor to the discontinued 6SL3210-1KE18-8AB0. The complete AB1 suffix identifies the current external-24-V design and should be retained in retrofit documentation.
Specs
| Manufacturer | Siemens |
|---|---|
| Article Number | 6SL3210-1KE18-8AB1 |
| Product Family | SINAMICS G120C |
| Input Supply | 3 AC 380–480 V, +10 / -20%, 47–63 Hz |
| Rated Power, Low Overload | 4.0 kW |
| Rated Power, High Overload | 3.0 kW |
| EMC Filter | Integrated Class A filter |
| Control Supply | External 24 V |
| Standard I/O | 6 DI, 2 DO, 1 AI, 1 AO, 1 motor-temperature input |
| Safety Function | Safe Torque Off integrated |
| Fieldbus | USS / Modbus RTU |
| Protection | IP20 / UL open type |
| Frame / Dimensions | FSA; 196 × 73 × 203 mm (H × W × D) |
| Cooling | Integrated fan; 0.005 m³/s airflow |
| Operating Temperature | -10 to +40 °C |
| Efficiency Class | IE2 |
Features
- A compact all-in-one converter architecture reduces the number of separate drive components required inside the control panel.
- Sensorless vector control and selectable V/f control modes support common pump, fan, conveyor and general machine loads.
- The integrated motor-temperature input accepts the supported PTC, KTY or Thermo-Click sensing arrangement.
- Plug-in screw terminals are used for line, motor and DC-link braking-resistor connections.
- The built-in serial interface supports plant networks based on USS or Modbus RTU.
Applications
- Speed control for compact conveyors, mixers, fans, pumps and auxiliary machine axes.
- 400 V industrial panels that require an integrated Class A EMC filter.
- Retrofit projects replacing the earlier AB0 article while preserving serial communication.
- Standalone machinery using the converter local I/O for command, interlock and status signals.
Lifecycle
- The AB1 article is the Siemens-designated successor to 6SL3210-1KE18-8AB0.
- Record the full order number because AB, AP and UP variants use different communication or filter combinations.
- Confirm motor duty, overload profile, cable length, braking arrangement and EMC installation before commissioning.
- Parameter backups and the installed fieldbus configuration should be retained as part of the replacement plan.
FAQ
Which communication protocol is built into this version?
The AB1 variant uses the USS / Modbus RTU serial interface.
Is an EMC filter included?
Yes. The article has an integrated Class A filter.
What older article does it replace?
Siemens identifies it as the successor to 6SL3210-1KE18-8AB0.
Is encoder feedback required for normal vector operation?
No. The documented vector-control mode is sensorless.
What must be checked before fitting it into a panel?
Verify supply tolerance, motor duty, cooling clearance, cable route and the required serial-network settings.
Does integrated STO complete the machine safety design by itself?
No. STO must be incorporated into a validated safety circuit and commissioned according to the system documentation.
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