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
- 1FK7062-2AH71-1QA0
SIMOTICS SSiemens 1FK7062-2AH71-1QA0 SIMOTICS S 1FK7-CT 1.4kW 8.5Nm 4500rpm Servo Motor
Siemens SIMOTICS S 1FK7-CT synchronous servo motor, 1.4 kW, 8.5 Nm, 4500 rpm, DRIVE-CLiQ absolute encoder, IP64, without holding brake.
Description
About the 1FK7062-2AH71-1QA0
About the 1FK7062-2AH71-1QA0
The Siemens 1FK7062-2AH71-1QA0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 1.4 kW, 8.5 Nm standstill torque (M0, 100K), and 4500 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 ships without a holding brake and weighs 9.101 kg.
Selection Notes
This 1FK7062-2AH71 winding is the highest-speed option offered in the 1FK7062 frame at 4500 rpm, and it ships without a holding brake, suiting horizontal or gravity-balanced high-speed axes. Detailed electromechanical constants — torque constant, moment of inertia, winding resistance — are not present in the verified PDF dataset for this order number; confirm them against the full datasheet before sizing the drive. At 8.5 Nm standstill torque and 4500 rpm, this winding targets applications that need base speed over holding torque, within a naturally cooled, IP64-rated frame.
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 4500 rpm rated speed suits belt-driven or geared axes that need higher throughput at 8.5 Nm standstill torque, without a holding brake to release before motion.
Specification
Full specification
Engineering data 10
| Rated speed (100 K) | 4,500 rpm |
|---|---|
| Number of poles | 8 |
| Rated torque (100 K) | 3.0 Nm |
| Rated current | 3.3 A |
| Static torque (60 K) | 7.10 Nm |
| Static torque (100 K) | 8.50 Nm |
| Stall current (60 K) | 6.50 A |
| Stall current (100 K) | 8.00 A |
| Moment of inertia | 11.200 kgcm² |
| Efficiency | 91.0 % |
Physical constants 9
| Torque constant | 1.06 Nm/A |
|---|---|
| Voltage constant at 20º C | 67.5 V/1000*min¯¹ |
| Winding resistance at 20º C | 0.48 Ω |
| Rotating field inductance | 6.4 mH |
| Electrical time constant | 13.20 ms |
| Mechanical time constant | 1.44 ms |
| Thermal time constant | 35 min |
| Shaft torsional stiffness | 37,000 Nm/rad |
| Net weight of the motor | 9.1 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 | without holding brake |
| Shaft end | Feather key |
| Encoder system | Encoder AS20DQI: absolute encoder single-turn 20 bits |
Show all 54 specifications ↓ Show less ↑19 more values in Identification, Optimum operating point, Limiting data, Recommended Motor Module, Logistics.
Identification 5
| Part number | 1FK7062-2AH71-1QA0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
Optimum operating point 2
| Optimum speed | 3,500 rpm |
|---|---|
| Optimum power | 1.9 kW |
Limiting data 4
| Max. permissible speed (mech.) | 7,200 rpm |
|---|---|
| Max. permissible speed (inverter) | 7,200 rpm |
| Maximum torque | 26.0 Nm |
| Maximum current | 29.0 A |
Recommended Motor Module 4
| Rated inverter current | 9A |
|---|---|
| Maximum inverter current | 27 A |
| Maximum torque | 24.80 Nm |
| Page 1 of 1 | Generated Sun Nov 1 02:18:36 CET 2026 |
Logistics 4
| Shipping weight | 10.101 kg |
|---|---|
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 1FK7062-2AH71-1QA0
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Ask us for the datasheet
Quick answers
Questions about the 1FK7062-2AH71-1QA0
What motor power is 1FK7062-2AH71-1QA0 rated for?
The rated motor power of 1FK7062-2AH71-1QA0 is 1.4 kW.
What is the HS code of 1FK7062-2AH71-1QA0 for customs?
The tariff (HS) code on file for 1FK7062-2AH71-1QA0 is 85015220.
Where does 1FK7062-2AH71-1QA0 ship from, and how fast?
1FK7062-2AH71-1QA0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Series
Siemens SIMOTICS S
- Brand
- Siemens
- Series
- SIMOTICS S
