SIEMIENS 1FK6 series three-phase servo motor

Balance requirements:

Motors with keyways are already balanced with half keys when they leave the factory. After installing output components such as couplings and gears, they need to be rebalanced according to ISO 1940 standards;

Do not strike the motor shaft or bearings. Special tools (such as a puller) should be used to install/remove the output components. If necessary, the output components can be heated (to avoid high temperature conduction to the inside of the motor).

（3） Electrical Connection Specification

Cable selection:

Pre assembled shielded cables recommended by Siemens must be used (not within the scope of delivery), and power cables and signal cables must be laid separately to avoid electromagnetic interference;

The cable should be compatible with the rated voltage and current of the motor, and have sufficient mechanical strength to avoid pulling and damaging it;

Plug connection:

The plug types are divided into power plug (P) and signal plug (S), and the wiring must strictly follow the drawing (Fig.5), and misconnection is prohibited;

The plug torque must comply with the specifications (power plug: 12Nm/20Nm, signal plug: 12Nm), and excessive twisting is prohibited;

The direction of the plug can be adjusted up to 10 times (when equipped with a matching socket) to avoid cable fatigue damage;

The inside of the plug should be clean and free of residue and moisture, and the sealing surface should be intact to ensure an IP64 protection level;

Grounding and shielding:

The protective conductor (PE) must be reliably grounded, and the grounding resistance must comply with local electrical regulations;

The cable shielding layer needs to be grounded at both ends to reduce high-frequency harmonic radiation and avoid electromagnetic interference (EMC);

Special requirements:

The encoder and temperature sensor are electrostatic sensitive components, and touching their connection terminals with hands or tools with static electricity is prohibited;

The temperature sensor can only cope with conventional overheating scenarios, and an additional thermal overload relay needs to be configured when the motor is stationary and overloaded.

Start up, operation and maintenance, and troubleshooting

（1） Pre startup inspection

Electrical connection inspection: Confirm that all plugs are securely fastened, the wiring is correct, and there are no loose or short circuit hazards;

Mechanical state inspection: manually rotate the motor output component to confirm that there is no jamming or friction noise, and that the keyway (if any) is fixed;

Protection device inspection: Motor overload protection, temperature protection and other devices have been activated and function normally;

Environmental condition inspection: The installation environment temperature and altitude meet the requirements, and the heat dissipation gap is sufficient;

Auxiliary equipment inspection: The supporting equipment such as frequency converter and encoder have been debugged and the parameters are adapted to the characteristics of the motor.

（2） Start the process

Brake test (with brake motor): Apply 24V DC ± 10% voltage to brake pins BR and BR2 to confirm that the rotor can rotate freely without friction noise;

Inverter startup: Start the system according to the instructions of the inverter (such as SIMODRIVE, MASTERDRIVES MC), and the initial speed should be lower than the rated speed;

Operation monitoring: Observe the operation status of the motor, confirm that the speed and torque meet the requirements, and there is no abnormal vibration, noise, or overheating;

Positioning test (positioning scenario): Verify that the encoder signal is normal and the motor positioning accuracy meets the standard;

Emergency stop test: Trigger the emergency stop button, confirm that the brake and frequency converter are linked normally, and the motor can quickly stop.

（3） Daily maintenance and cycle requirements

Cleaning and maintenance: Regularly clean the dust and oil stains on the surface of the motor to ensure effective heat dissipation. Power off during cleaning to prevent water or cleaning agents from seeping into the interior of the motor;

Status check:

Regularly inspect cables and plugs for damage, aging, and loose fasteners;

Monitor the operating temperature, vibration, and noise of the motor, and promptly shut down for troubleshooting if any abnormalities are found;

Periodic maintenance reference:

Bearing: The reference life is 20000 hours. If there is abnormal noise or increased vibration during operation, it should be replaced in a timely manner;

Radial shaft seal (oil lubrication): with a reference life of 5000 hours, regularly check for leaks and replace if necessary;

Special maintenance: After disassembling the motor, the encoder system must be recalibrated, otherwise it will affect the positioning accuracy.

（4） Common faults and solutions

Core causes of fault phenomena and solutions

Irregular motor operation: 1. Insufficient shielding of motor/encoder cables, electromagnetic interference; 2. The gain of the frequency converter controller is too high. 1. Check if the grounding of the cable shielding layer is reliable; 2. Reduce the controller gain according to the frequency converter manual