Lenze 00397245 MDFKABA090-22 Asynchronous Servo Motor
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Product Information
The Lenze 00397245 (model MDFKABA090-22) is a three-phase asynchronous servo motor from the MDFKA product family, engineered for high-torque inverter duty and dynamic motion control tasks. Delivering a rated power output of 2.5 kW and a continuous torque rating of 16.5 Nm at 1450 rpm, this frame size 090 unit operates with a 7 A rated current on a 400 V AC supply and reaches maximum operating frequencies up to 200 Hz. Constructed with an IP54 protection enclosure and Class F thermal insulation rated up to 155 °C, the motor features an independent forced-ventilation blower fan that provides continuous cooling regardless of motor operating speed. This dedicated active ventilation allows the unit to maintain full rated continuous torque capability down to standstill without thermal overload.
Electrical connections for power, cooling, and monitoring are arranged through terminal boxes mounted on the motor housing. The design incorporates separate power feed connections, terminal points for the cooling blower fan, and dedicated leads for feedback options such as encoders or resolvers along with built-in KTY or PTC thermal sensors. Commissioning a replacement unit into an existing machine requires loading the correct motor map and feedback parameters into the driving inverter. The motor is engineered for operation with Lenze frequency inverters and servo controllers, including the 8200 vector series, 9300 series, and 9400 HighLine drives. Parameter setup, feedback selection, and thermal monitoring configuration are managed via Lenze EASY Starter or Global Drive Control software, with technical support available through ABC Industrial Parts for parameter verification and drive setup.
First-line diagnostic checks focus on electrical winding symmetry, thermal protection circuit health, and forced-cooling operation. Technicians can measure stator winding resistance across the U-V, V-W, and W-U phase terminals to confirm balanced phase resistance, while resistance measurements across the KTY or PTC thermal sensor leads verify motor temperature monitoring signals. Verifying that the independent forced-ventilation fan receives power and spins freely is critical to preventing thermal trips during continuous low-speed operations. Internal stator faults, broken winding insulation, or damaged mechanical bearings cannot be serviced in the field, making a tested replacement or specialized reconditioning through ABC Industrial Parts the most efficient path back to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 00397245 |
| Model / Type | MDFKABA090-22 |
| Product Family | MDFKA |
| Component Type | Asynchronous Servo Motor |
| Rated Power | 2.5 kW |
| Rated Torque | 16.5 Nm |
| Rated Speed | 1450 rpm |
| Maximum Frequency | 200 Hz |
| Rated Current | 7 A |
| Supply Voltage | 400 V AC |
| Frame Size | 090 |
| Cooling Type | Forced Ventilation (Blower Fan) |
| Protection Rating | IP54 |
| Insulation Class | Class F (155 °C) |
| Thermal Sensor Options | KTY / PTC |
| Feedback Options | Resolver / Incremental Encoder |
Programming and Configuration
Integrating the Lenze 00397245 motor into an automated system involves configuring motor identification and control parameters within the controlling frequency inverter or servo drive. Drive configuration tools, such as Lenze EASY Starter or Global Drive Control (GDC), allow engineers to input base parameters including 2.5 kW rated power, 16.5 Nm rated torque, 1450 rpm rated speed, 7 A rated current, and the 200 Hz maximum operating frequency limit.
Proper drive setup also requires selecting the correct thermal protection evaluation type (PTC or KTY series sensor) in the software software parameters to ensure active overtemperature shutdown. When closed-loop speed or position control is utilized, the drive must be configured for the exact feedback device installed on the motor shaft, ensuring accurate pulse interpretation or angle tracking for precise vector control.
Communication and System Integration
Physical integration of the MDFKABA090-22 motor requires connecting power lines, blower fan wiring, and feedback signal cabling via dedicated terminal boxes. Main power supply leads from the drive inverter attach to the primary terminal block, while a secondary connection delivers separate electrical supply to power the forced-ventilation fan.
The motor integrates seamlessly with established Lenze drive platforms, including 8200 vector frequency inverters, 9300 series servo drives, and 9400 HighLine servo controllers. Feedback signals and internal thermal sensor leads connect directly to compatible input cards or feedback ports on these drives to deliver closed-loop dynamic responsiveness across continuous high-torque applications.
Diagnostics and Status Indication
Diagnostic evaluation of the motor can be conducted at the terminal connections using standard electrical test equipment. Measuring phase-to-phase stator winding resistance across U-V, V-W, and W-U terminals confirms electrical symmetry and identifies short circuits or open windings. Unbalanced resistance readings indicate winding degradation within the stator.
The thermal protection circuit can be verified by measuring resistance across the thermal sensor leads. A normal resistance reading confirms intact PTC or KTY sensor circuits, whereas an open circuit or extreme resistance value indicates a tripped state or damaged sensor wire. Additionally, verifying full airflow from the independent forced-ventilation fan ensures that the motor receives required cooling during continuous low-speed operations.
Replacement and Spare Part Considerations
The Lenze MDFKA series, including part number 00397245, represents legacy equipment that has been discontinued by the manufacturer. Obtaining an exact replacement spare unit ensures immediate compatibility with existing mechanical mountings, terminal wiring, blower supply voltage, and drive feedback interfaces without requiring mechanical alterations.
When retrofitting legacy machinery with current generation drives or motors, such as Lenze MCA or MQA successor series, a thorough review of physical dimensions and feedback electronics is required. Engineers must evaluate flange bolt circle dimensions, shaft length and diameter, cooling airflow arrangements, and feedback encoder communication protocols to guarantee full compatibility with the host system.
Frequently Asked Questions
What are the core operating specifications for the Lenze 00397245 motor?
The Lenze 00397245 (MDFKABA090-22) is a 2.5 kW asynchronous servo motor providing 16.5 Nm of rated continuous torque at 1450 rpm. It operates with a 7 A rated current at 400 V AC supply, features an IP54 protection rating, and supports maximum frequencies up to 200 Hz.
Why does this motor require an external forced-ventilation blower fan?
The independent forced-ventilation blower fan provides continuous active cooling regardless of motor shaft speed. This prevents overheating and allows the motor to maintain continuous rated torque down to zero speed and standstill.
Which Lenze drive series are compatible with the MDFKABA090-22?
This motor is designed for integration with Lenze 8200 vector frequency inverters, Lenze 9300 series servo drives, and Lenze 9400 HighLine servo drives.
What engineering software is used to parameterize the motor with a drive?
Motor parameters, feedback settings, and thermal protection configurations are managed using Lenze EASY Starter or Global Drive Control (GDC) software.
How can maintenance technicians perform electrical checks on a suspect motor?
Technicians can measure phase-to-phase winding resistance across terminals U-V, V-W, and W-U to verify stator balance, and check resistance across the thermal sensor terminals to test the PTC or KTY monitoring circuit.
What needs to be checked when replacing this motor with a newer Lenze MCA or MQA series motor?
Upgrading to Lenze MCA or MQA successor models requires checking mechanical compatibility (flange bolt circle, shaft diameter, and length), external cooling fan power requirements, and encoder/resolver signal alignment with the connected drive.
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