Siemens 1FK2306-2AC00-0MB0: A Compact Powerhouse for Dynamic Motion Control
The Siemens 1FK2306-2AC00-0MB0 is a high-performance synchronous servo motor from the SIMOTICS S-1FK2 series. Designed for demanding applications requiring high dynamics and precision, this compact motor is a popular choice for pairing with Siemens’ SINAMICS drive systems. This article provides a comprehensive technical breakdown for engineers looking to specify, install, or replace this component.
The 1FK2306-2AC00-0MB0 is a SIMOTICS S-1FK2 series compact synchronous servo motor with a shaft height of 63mm. It features a rated torque of 6.0 Nm at 3000 rpm, includes a holding brake, and is equipped with a high-resolution AS22DQC absolute encoder for precise positioning tasks.
As part of Siemens’ integrated drive technology portfolio, the 1FK2 series is engineered for seamless integration with SINAMICS S120 and S210 drive systems, enabling rapid commissioning and optimized performance. Its low rotor inertia makes it ideal for applications with fast acceleration and deceleration cycles, such as packaging machinery, pick-and-place robotics, and material handling systems.
Technical Specifications: 1FK2306-2AC00-0MB0
Here are the detailed specifications for the motor. Always verify these against the motor’s nameplate and the official Siemens datasheet for your specific application.
| Specification | Value |
|---|---|
| Motor Series | SIMOTICS S-1FK2 |
| Motor Type | Compact Synchronous Servo Motor |
| Rated Voltage (Line-to-Line) | 400V AC (3-phase) |
| Rated Speed (n_n) | 3000 rpm |
| Rated Torque (M_n) | 6.0 Nm |
| Rated Current (I_n) | 11.5 A |
| Static Torque (M0) | 7.0 Nm |
| Static Current (I0) | 13.5 A |
| Shaft Height | 63 mm |
| Encoder System | Absolute encoder 22-bit + 12-bit multiturn (AS22DQC) |
| Shaft End | Shaft with feather key |
| Holding Brake | Yes (24V DC) |
| Degree of Protection | IP65 (with shaft sealing ring) |
| Connector Type | OCC (One Cable Connection) |
Drive System Compatibility: This motor is designed for operation with a compatible SINAMICS servo drive (e.g., S210 or S120). Using an incompatible or improperly configured drive can lead to poor performance, overheating, or permanent damage to the motor or drive. Always use the correct motor code (found on the nameplate) during drive commissioning in the TIA Portal or STARTER software to load the precise electronic model of the motor.
Applications and Use Cases
With its high dynamic response, the 1FK2306-2AC00-0MB0 excels in:
- Packaging Machines: Form, fill, and seal operations.
- Robotics: Articulated arm axes and pick-and-place gantries.
- Handling Systems: High-speed conveyors and sorters.
- Machine Tools: Auxiliary axes and tool changers.
Frequently Asked Questions (FAQ)
What is the main difference between the 1FK2 and 1FK7 series?
The 1FK2 series is Siemens’ newer, more compact servo motor line designed for standard to mid-range performance applications, often paired with the SINAMICS S210 drive system via a One Cable Connection (OCC). The 1FK7 series is a more established and broader family, offering a wider range of options (e.g., higher inertia, different cooling methods) and is typically used with SINAMICS S120 drives for higher-performance or more specialized tasks.
How do I wire the 24V DC holding brake?
The holding brake requires an external 24V DC power supply. This supply is typically controlled by the servo drive’s “Brake Control” output. The drive ensures the brake is released only when the motor is enabled and has sufficient holding torque, and engages it when the motor is disabled. Never use the holding brake for dynamic braking or as an emergency stop; it is designed only to hold a load at a standstill.
What does the “OCC” or One Cable Connection feature mean?
OCC (One Cable Connection) is a technology that combines the motor power cables and the encoder signal cables into a single, hybrid cable. This significantly simplifies wiring, reduces cable clutter in the cabinet and on the machine, and lowers the potential for connection errors. It requires both an OCC-compatible motor like the 1FK2 and an OCC-compatible drive like the SINAMICS S210.
