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
- 1FK7062-2AF71-1QB0
SIMOTICS SSiemens 1FK7062-2AF71-1QB0 SIMOTICS S 1FK7-CT 1.9kW 8.5Nm 3000rpm Brake Servo Motor
Siemens SIMOTICS S 1FK7-CT synchronous servo motor, 1.9 kW, 8.5 Nm, 3000 rpm, DRIVE-CLiQ absolute encoder, IP64, with holding brake.
Description
About the 1FK7062-2AF71-1QB0
About the 1FK7062-2AF71-1QB0
The Siemens 1FK7062-2AF71-1QB0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 1.9 kW, 8.5 Nm standstill torque (M0, 100K), and 3000 rpm rated speed at 600 VDC bus voltage. It is naturally cooled, IMB5-mounted, and fitted with a DRIVE-CLiQ absolute single-turn 20-bit encoder (AS20DQI); this order number adds a holding brake, raising the moment of inertia to 12.200 kgcm².
Selection Notes
This 1FK7062-2AF71 winding adds a holding brake to the mid-speed 3000 rpm, 91.0%-efficient winding in the 1FK7062 frame, making it the choice for vertical or unbalanced axes at this speed point. The brake raises moment of inertia to 12.200 kgcm² and total weight to 10.5 kg over the brake-less build in this winding, and lowers shaft torsional stiffness to 26,500 Nm/rad. The 1.60 Nm/A torque constant and 4.0 A rated current for 8.5 Nm standstill torque carry over unchanged from the brake-less winding, since the brake is a mechanical add-on at the non-drive end and does not alter the stator's electrical design.
Applications
Natural (fan-less) cooling and IP64 protection suit compact machine enclosures without forced airflow. The DRIVE-CLiQ interface connects directly to SINAMICS S120/S210 drive systems over a single feedback cable. The mid-speed, holding-brake configuration fits vertical or unbalanced axes running at moderate throughput.
Specification
Full specification
Engineering data 10
| Rated speed (100 K) | 3,000 rpm |
|---|---|
| Number of poles | 8 |
| Rated torque (100 K) | 6.0 Nm |
| Rated current | 4.0 A |
| Static torque (60 K) | 7.10 Nm |
| Static torque (100 K) | 8.50 Nm |
| Stall current (60 K) | 4.30 A |
| Stall current (100 K) | 5.30 A |
| Moment of inertia | 12.200 kgcm² |
| Efficiency | 91.0 % |
Physical constants 9
| Torque constant | 1.60 Nm/A |
|---|---|
| Voltage constant at 20º C | 102.5 V/1000*min¯¹ |
| Winding resistance at 20º C | 1.15 Ω |
| Rotating field inductance | 14.6 mH |
| Electrical time constant | 12.80 ms |
| Mechanical time constant | 1.49 ms |
| Thermal time constant | 35 min |
| Shaft torsional stiffness | 26,500 Nm/rad |
| Net weight of the motor | 10.5 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 | 1FK7062-2AF71-1QB0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
Optimum operating point 2
| Optimum speed | 3,000 rpm |
|---|---|
| Optimum power | 1.9 kW |
Limiting data 4
| Max. permissible speed (mech.) | 7,200 rpm |
|---|---|
| Max. permissible speed (inverter) | 5,600 rpm |
| Maximum torque | 26.0 Nm |
| Maximum current | 19.2 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 | 5A |
|---|---|
| Maximum inverter current | 15 A |
| Maximum torque | 22.10 Nm |
| Page 1 of 1 | Generated Sun Nov 1 02:18:25 CET 2026 |
Logistics 4
| Shipping weight | 10.4 kg |
|---|---|
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 1FK7062-2AF71-1QB0
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Quick answers
Questions about the 1FK7062-2AF71-1QB0
What is the rated current of 1FK7062-2AF71-1QB0?
The rated current of 1FK7062-2AF71-1QB0 is 4.0 A.
What motor power is 1FK7062-2AF71-1QB0 rated for?
The rated motor power of 1FK7062-2AF71-1QB0 is 1.9 kW.
What is the HS code of 1FK7062-2AF71-1QB0 for customs?
The tariff (HS) code on file for 1FK7062-2AF71-1QB0 is 85015220.
Where does 1FK7062-2AF71-1QB0 ship from, and how fast?
1FK7062-2AF71-1QB0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
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Series
Siemens SIMOTICS S
- Brand
- Siemens
- Series
- SIMOTICS S
