VFD for Compressors: Selection Guide
How to select and size a VFD for screw, reciprocating and centrifugal compressors, covering overload rating, turndown limits and energy savings.
The Siemens 6SL3246-0BA22-1FA0 is a SINAMICS G120 CU250S-2 PN control unit with an integrated PROFINET interface, drawing 24 V DC at up to 2.00 A. It supports sensorless vector, V/f, and encoder-based vector or torque control, plus Safety Integrated STO, SBC, and SS1 without an external safety relay.
CU250S-2 PN adds PROFINET and the S (Servo) control level to the G120 CU250 family — pick it over a CU240 unit when the application needs full closed-loop vector or torque control with an encoder (DRIVE-CLiQ, HTL/TTL/SSI, or resolver via terminal) rather than open-loop V/f. Safety Integrated STO/SBC/SS1 is built in as standard; the extended safety functions and EPOS positioning both require their respective extended license per the order data, so factor that into the BOM if the application needs motion control beyond basic start/stop/speed.
Closed-loop speed and torque control of pumps, fans, and conveyor drives on a PROFINET network where machine safety requires STO/SS1 without a separate safety relay.
| Operating voltage via: The Power Module | DC 24 V |
|---|---|
| Operating voltage via: External power supply | DC 20 ... 29 V |
| Operating voltage via: Max. power consumption | 2.00 A |
| Operating voltage via: Power loss | 12.00 W |
| Communication | PROFINET, EtherNet/IP |
|---|
| Standard digital inputs: Number | 15 |
|---|---|
| Standard digital inputs: Switching level: 0→1 | 11 V |
| Standard digital inputs: Switching level: 1→0 | 5V |
| as relay changer: Number | 2 |
| Analog / digital inputs: Number | 2 (Differential input) |
| Analog outputs: Number | 2 (Non-isolated output) |
| Part number | 6SL3246-0BA22-1FA0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| EAN | 4042948664117 |
| V/f with flux current control (FCC) | 1 |
|---|---|
| V/f ECO linear / square-law | 1 |
| Sensorless vector control | 1 |
| Vector control, with sensor | 1 |
| Encoderless torque control | 1 |
| Torque control, with encoder | 1 |
| Ambient temperature: Operation | -10 ... 50 °C (14 ... 122 °F) |
|---|---|
| Ambient temperature: Storage | -40 ... 70 °C (-40 ... 158 °F) |
| Relative humidity: Max. operation | 95 % 0.05 ... 1.50 mm² (AWG 28 ... AWG 16) |
| Degree of protection | IP20 / UL open type |
|---|---|
| Dimensions: Width | 73.0 mm (2.87 in) |
| Dimensions: Height | 199.0 mm (7.83 in) |
| Dimensions: Depth | 67.0 mm (2.64 in) |
| Compliance with standards | CE, UL, cUL, RCM, SEMI F47 |
|---|---|
| CE marking | Low-voltage directive 2014/35/EC |
| Page 1 of 1 | Generated Sun Nov 1 04:07:50 CET 2026 |
| Net weight | 0.61 kg |
|---|---|
| Shipping weight | 1.11 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe tariff (HS) code on file for 6SL3246-0BA22-1FA0 is 85371091.
The EAN (GTIN) of 6SL3246-0BA22-1FA0 is 4042948664117.
6SL3246-0BA22-1FA0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
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