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.
- Part number
- 1FK7060-2AC71-1QB0
SIMOTICS SSiemens 1FK7060-2AC71-1QB0 SIMOTICS S-1FK7 1FK7-CT 1.1kW 6Nm 2000rpm Servo Motor
SIMOTICS S-1FK7 1FK7-CT synchronous servo motor, 1.1kW, 6Nm M0, 2000rpm, 600V DC link, with holding brake, IP64, DRIVE-CLiQ encoder.
Description
About the 1FK7060-2AC71-1QB0
About the 1FK7060-2AC71-1QB0
The Siemens 1FK7060-2AC71-1QB0 is a SIMOTICS S-1FK7 (1FK7-CT) permanent-magnet synchronous servo motor rated 1.1 kW at 2,000 rpm, delivering 6 Nm standstill torque (M0, 100K) from a 600 V DC link. It integrates a holding brake, carries a single-turn 20-bit DRIVE-CLiQ absolute encoder (AS20DQI), and is naturally cooled in a shaft height 63, IMB 5 (IM V1/V3) housing rated IP64.
Selection Notes
Same 1FK7060 frame and 6 Nm / 2,000 rpm rating as the brake-free variant, with an integrated holding brake — weight rises from 7.1 to 8.5 kg and shaft torsional stiffness drops from 40,500 to 28,500 Nm/rad. Fit it on vertical or overhung axes where the load must be held without drive power; on horizontal axes, the brake-free variant is lighter and stiffer. The 3.0 A rated current and 1.91 Nm/A torque constant are unchanged by the brake.
Applications
Used as the servo motor in vertical or overhung higher-torque machine axes — Z-axes on heavier tooling, lift stations, and gravity-loaded feed axes — driven through a DRIVE-CLiQ-based servo drive via the AS20DQI single-turn absolute encoder interface. The integrated holding brake keeps the axis in position when drive power drops out or during an E-stop.
Specification
Full specification
Engineering data 10
| Rated speed (100 K) | 2,000 rpm |
|---|---|
| Number of poles | 8 |
| Rated torque (100 K) | 5.3 Nm |
| Rated current | 3.0 A |
| Static torque (60 K) | 5.00 Nm |
| Static torque (100 K) | 6.00 Nm |
| Stall current (60 K) | 2.55 A |
| Stall current (100 K) | 3.15 A |
| Moment of inertia | 8.700 kgcm² |
| Efficiency | 90.0 % |
Physical constants 9
| Torque constant | 1.91 Nm/A |
|---|---|
| Voltage constant at 20º C | 121.0 V/1000*min¯¹ |
| Winding resistance at 20º C | 2.75 Ω |
| Rotating field inductance | 30.5 mH |
| Electrical time constant | 11.10 ms |
| Mechanical time constant | 1.75 ms |
| Thermal time constant | 30 min |
| Shaft torsional stiffness | 28,500 Nm/rad |
| Net weight of the motor | 8.5 kg Permanent-magnet synchronous |
Mechanical data 16
| Motor type | motor Compact |
|---|---|
| Shaft height | 63 |
| Cooling | Natural cooling |
| Radial runout tolerance | 0.040 mm |
| Concentricity tolerance | 0.10 mm |
| Axial runout tolerance | 0.10 mm |
| Vibration severity grade | Grade A |
| Connector size | M23 |
| Degree of protection | IP64 |
| Design acc. to Code I | IM B5 (IM V1, IM V3) |
| Temperature monitoring | Pt1000 temperature sensor |
| Electrical connectors | Connectors for signals and power rotatable |
| Color of the housing | Standard (Anthracite RAL 7016) |
| Holding brake | with holding brake |
| Shaft end | Feather key |
| Encoder system | Encoder AS20DQI: absolute encoder single-turn 20 bits |
Show all 61 specifications ↓ Show less ↑26 more values in Identification, Optimum operating point, Limiting data, Holding brake, Recommended Motor Module, Logistics.
Identification 5
| Part number | 1FK7060-2AC71-1QB0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
Optimum operating point 2
| Optimum speed | 2,000 rpm |
|---|---|
| Optimum power | 1.1 kW |
Limiting data 4
| Max. permissible speed (mech.) | 7,200 rpm |
|---|---|
| Max. permissible speed (inverter) | 4,750 rpm |
| Maximum torque | 18.0 Nm |
| Maximum current | 10.7 A |
Holding brake 7
| Holding brake version | Permanent-magnet brake |
|---|---|
| Holding torque | 13.0 Nm |
| Power supply voltage | DC 24 V ± 10 % |
| Coil current | 0.8 A |
| Opening time | 100 ms |
| Closing time | 50 ms |
| Highest braking work | 380 J |
Recommended Motor Module 4
| Rated inverter current | 3A |
|---|---|
| Maximum inverter current | 9A |
| Maximum torque | 15.90 Nm |
| Page 1 of 1 | Generated Sun Nov 1 02:16:52 CET 2026 |
Logistics 4
| Shipping weight | 8.4 kg |
|---|---|
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
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Quick answers
Questions about the 1FK7060-2AC71-1QB0
What is the rated current of 1FK7060-2AC71-1QB0?
The rated current of 1FK7060-2AC71-1QB0 is 3.0 A.
Which supply voltage is 1FK7060-2AC71-1QB0 rated for?
The rated operational voltage of 1FK7060-2AC71-1QB0 is 600 V DC.
What motor power is 1FK7060-2AC71-1QB0 rated for?
The rated motor power of 1FK7060-2AC71-1QB0 is 1.1 kW.
What is the HS code of 1FK7060-2AC71-1QB0 for customs?
The tariff (HS) code on file for 1FK7060-2AC71-1QB0 is 85015220.
Where does 1FK7060-2AC71-1QB0 ship from, and how fast?
1FK7060-2AC71-1QB0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for servo drives
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Series
Siemens SIMOTICS S
- Brand
- Siemens
- Series
- SIMOTICS S
