VFD vs Servo Drive: Key Differences
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
The Siemens 1FK2104-5AK00-0SA0 is a SIMOTICS S-1FK2 HD synchronous servo motor with 2.4 Nm standstill torque, dual-rated 1.07 kW at 6000 rpm on 380-480 V and 0.75 kW at 3000 rpm on 200-240 V. It uses an absolute single-turn 22-bit encoder (AS22DQC) over a single OCC feedback cable, matched to the SINAMICS S210 servo drive.
This motor is dual-rated by supply voltage: on 380-480 V the SINAMICS S210 can run it to 6000 rpm for 1.07 kW, while a 200-240 V supply caps it at 3000 rpm and 0.75 kW at the same 2.4 Nm torque. Pick the higher-voltage line-up when the application needs the extra speed headroom; the lower-voltage option is enough where the axis never exceeds 3000 rpm. The single OCC cable carries power and absolute feedback together, cutting one cable run versus a split power/encoder motor. The single-turn AS22DQC encoder resolves position within one revolution at power-up, so multi-turn indexing axes still need a homing move. The larger D19 x 40 mm shaft and M17 rotatable connector are a step up from the 1FK2103 frame, in line with the higher torque and power.
Sized for indexing tables, small robots, and conveyor axes that need speed above 3000 rpm when run from a 380-480 V SINAMICS S210 supply. IP64 handles dust and splash from any direction, not washdown or submersion.
| Motor type | Permanent-magnet synchronous motor, Natural cooling, |
|---|---|
| Static torque | 2.40 Nm |
| Static current | 4.4 A |
| Maximum torque | 7.60 Nm |
| Maximum current | 16.0 A |
| Maximum speed | 8,000 rpm |
| Rotor moment of inertia | 0.5600 kgcm² |
| Weight | 2.9 kg |
| SINAMICS S210, 3AC 400V: Rated speed | 6,000 rpm |
|---|---|
| SINAMICS S210, 3AC 400V: Rated torque | 1.70 Nm |
| SINAMICS S210, 3AC 400V: Rated current | 3.2 A |
| SINAMICS S210, 3AC 400V: Rated power | 1.07 kW |
| Encoder system | Encoder AS22DQC: Absolute encoder single turn 22 bit |
|---|---|
| Safety Integrated - Suitable encoder | Yes |
| Part number | 1FK2104-5AK00-0SA0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4042948691168 |
| ETIM class | EC011290 |
| eCl@ss | 27022602 |
| Connection type | OCC for S210 |
|---|---|
| Connector size OCC | M17 |
| Design acc. to Code I | IM B5 (IM V1, IM V3) |
|---|---|
| Vibration severity grade | Grade A |
| Shaft height | 40 |
| Flange size (AB) | 80 mm |
| Centering ring (N) | 70 mm |
| Hole circle (M) | 90 mm |
| Screw-on hole (S) | 6.5 mm |
| Overall length (LB) | 126 mm |
| Diameter of shaft (D) | 19 mm |
| Length of shaft (E) | 40 mm |
| Length of flange diagonal (P) | 105 mm |
| Shaft end | Plain shaft Standard (Anthracite, similar to RAL |
| Color of the housing: Page 1 of 1 | 7016) Generated Sun Nov 1 01:14:45 CET 2026 |
| Net weight | 2.85 kg |
|---|---|
| Package dimensions | 452 × 250 × 267 mm |
| Country of origin | DE |
| Shipping weight | 3.35 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated operational voltage of 1FK2104-5AK00-0SA0 is 200–240 – 380–480 V AC.
The rated motor power of 1FK2104-5AK00-0SA0 is 0.75 – 1.07 kW.
The tariff (HS) code on file for 1FK2104-5AK00-0SA0 is 85015100.
The EAN (GTIN) of 1FK2104-5AK00-0SA0 is 4042948691168.
1FK2104-5AK00-0SA0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
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