1FK7080-2AH71-1QB0

What type of motor is this?

This unit is a compact permanent-magnet synchronous motor from the SIMOTICS S-1FK7 range. It is designed for precise motion control duties where accurate speed, torque and positioning are important.

What are the main performance figures?

Key figures include a rated speed of 4,500 rpm, rated torque of 4.5 Nm, rated current of 4.8 A and efficiency of 92.0%. The optimum operating point is 4,000 rpm with an optimum power output of 2.4 kW.

What is the maximum speed and torque?

The motor has a maximum permissible mechanical speed of 6,000 rpm and a maximum torque of 25.0 Nm. Maximum current is 27.5 A.

Does it include a holding brake?

Yes. This version is fitted with a permanent-magnet holding brake. The brake provides 22.0 Nm holding torque and uses a 24 V DC supply with ±10% tolerance. Coil current is 0.9 A, with an opening time of 200 ms and a closing time of 60 ms.

What encoder is fitted to this motor?

It is equipped with an AS20DQI absolute single-turn 20-bit encoder. This makes the motor suitable for applications that require accurate position feedback.

What level of environmental protection does it have?

The housing is rated IP64. This means the motor offers protection against dust ingress and splashing water, making it a practical choice for many industrial environments.

How is the motor cooled?

The motor uses natural cooling. This can be advantageous in installations where a simple, compact arrangement is preferred.

What mounting style does it use?

The design is specified as IM B5, with IM V1 and IM V3 orientations also noted. This helps when checking fit and mounting arrangement against an existing machine build.

What are the shaft and connector details?

This motor has a feather key shaft end and rotatable connectors for signals and power. Connector size is 1, which can be useful when matching existing cabling and installation space.

Is temperature monitoring built in?

Yes. The motor includes a Pt1000 temperature sensor for temperature monitoring.

What are the static torque values?

The static torque is 6.60 Nm at 60 K and 8.00 Nm at 100 K. These values are useful when assessing holding and low-speed load conditions.

What are the electrical characteristics of the windings?

For the Siemens 1FK7080-2AH71-1QB0, the winding resistance at 20°C is 0.42 Ω, the rotating field inductance is 7.3 mH, the torque constant is 1.08 Nm/A and the voltage constant at 20°C is 68.5 V/1000 min¯¹.

What is the motor's inertia and weight?

The moment of inertia is 17.500 kgcm² and the net motor weight is 13.3 kg. These details are especially useful when comparing response characteristics and mechanical load matching.

What housing and mechanical build features does it have?

This is a compact motor with shaft height 80, Grade A vibration severity, radial runout tolerance of 0.050 mm, concentricity tolerance of 0.10 mm and axial runout tolerance of 0.10 mm. The housing colour is standard Anthracite RAL 7016.