AXOR motor Germany AXOR model AXOR price

AXOR motor refers to the engine that controls the operation of mechanical components in a servo system; it is an auxiliary motor for indirect speed variation. Servo motors can control speed with very high position accuracy, converting voltage signals into torque and rotational speed to drive controlled objects. The rotor speed of a servo motor is controlled by the input signal and responds quickly. In automatic control systems, it serves as an actuator, featuring small electromechanical time constants and high linearity, converting received electrical signals into angular displacement or angular velocity output on the motor shaft. They are divided into two main categories: DC and AC servo motors. Their main characteristics are no self-rotation when the signal voltage is zero, and the speed decreases uniformly as torque increases.

AXOR motor fault handling

Motor winding short circuits are caused by insulation damage due to excessive motor current, large power supply voltage fluctuations, single-phase operation, mechanical damage, poor manufacturing, etc. These include inter-turn winding short circuits, inter-winding short circuits, inter-pole winding short circuits, and inter-phase winding short circuits. 1. Fault phenomena: uneven magnetic field distribution of ions, unbalanced three-phase current causing increased vibration and noise during motor operation; in severe cases, the motor cannot start, and large short-circuit currents generated in the shorted coils cause rapid heating and burnout. 2. Causes: long-term motor overload causing insulation aging and loss of insulating properties; insulation damage during winding insertion; moisture absorption in windings lowering insulation resistance and causing breakdown; improper padding or damage to end and inter-layer insulation materials during shaping; insulation damage to end connection wires; insulation breakdown due to overvoltage or lightning strikes; insulation damage caused by mutual friction between rotor and stator winding ends; metal foreign objects falling into the motor interior and excessive oil contamination. 3. Inspection methods: (1) External observation method. Observe whether the junction box and winding ends are scorched; windings leave a dark brown color and have a burnt smell after overheating. (2) Temperature detection method. Run under no-load for 20 minutes (stop immediately if abnormalities are found) and use the back of your hand to check if any part of the winding exceeds normal temperature. (3) Power-on test method. Measure with an ammeter; if the current in a certain phase is too high, it indicates a short circuit in that phase. (4) Bridge inspection. Measure the DC resistance of each winding; generally, the difference should not exceed 5%; if exceeded, the phase with lower resistance has a short circuit fault. (5) Short-circuit detector method. If the tested winding has a short circuit, the steel sheet will vibrate. (6) Multimeter or megohmmeter method. Measure the insulation resistance between any two phase windings; if the reading is extremely small or zero, it indicates a short circuit between those two phase windings. (7) Voltage drop method. Connect the three windings in series and apply low-voltage safe AC power; the group with the smaller reading has a short circuit fault. (8) Current method. Run the motor under no-load, first measure the three-phase currents, then swap two phases to measure and compare; if the result does not change with the power swap, the phase with the higher current has a short circuit. 4. Short circuit treatment methods: (1) Short circuit point at the ends. Use insulating material to isolate the short circuit point, or re-wrap with insulated wire, then varnish and bake dry again. (2) Short circuit in the slot. Soften it, locate and repair the short circuit point, place it back into the slot, then varnish and bake dry. (3) For each phase winding with fewer than 1/12 shorted turns, cut all shorted turns when connecting in series, connect the conductive parts to form a closed loop for emergency use. (4) When the number of shorted turns in the winding exceeds 1/12, they must be completely removed and rewound.

AXOR motor maintenance

Motors should be kept clean at all times, and no debris is allowed to enter the motor interior; air inlets and outlets must remain unobstructed. Use instruments to monitor power supply voltage, frequency, and motor load current. Power supply voltage and frequency must comply with the motor nameplate data, and the motor load current must not exceed the specified value on the nameplate; otherwise, identify the cause and take measures, and only continue operation after eliminating the abnormal condition. Take necessary means to detect temperature rise at various parts of the motor. For wound-rotor motors, regularly pay attention to the contact pressure, wear, and sparking between brushes and collector rings. When the motor stops, disconnect the switch in the stator circuit, then move the brush lifting mechanism to the starting position and disconnect the short-circuiting device. Regular maintenance after motor operation is generally divided into minor repairs and major overhauls. Minor repairs are general maintenance without major disassembly of the motor starting equipment and overall structure, approximately once every quarter. Major overhauls require disassembling all transmission devices and all motor components, conducting comprehensive inspection and cleaning of the disassembled parts, generally once a year.

AXOR motor power frequency conversion

Motor power supply: AC motors generally adopt a three-phase system because three-phase AC motors have obvious advantages over single-phase motors in terms of performance indicators, raw material utilization, and price. Three-phase motors of the same power are smaller in volume, lighter in weight, and lower in price than single-phase motors. Three-phase motors have self-starting capability. Single-phase motors lack starting torque; to solve the starting problem, special measures are required. The torque of single-phase motors is pulsating, and noise is relatively high, but the required power supply is simpler, making them very convenient for household use. Therefore, small household motors and instrument motors mostly adopt single-phase motors. Frequency converters are power transmission components that control AC motors by changing the frequency and amplitude of the motor's working power supply using frequency conversion technology and microelectronics. Characteristics of AC motor speed control frequency converters: ■ Low-frequency torque output 180%, good low-frequency operating characteristics, maximum output frequency 600Hz, capable of controlling high-speed motors, comprehensive detection and protection functions (overvoltage, undervoltage, overload), restart after instantaneous power failure, protection functions such as acceleration, deceleration, and stall prevention during operation, automatic identification function for motor dynamic parameters to ensure system stability and accuracy, fast response during high-speed stopping, rich and flexible input/output interfaces and control methods, strong universality.

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