Mitsubishi HG-KR43B

The model HG-KR43B belongs to the HG-KR family of general-purpose servo motors manufactured by Mitsubishi. The model is intended to rotate rapidly while creating significant torque, which is beneficial in several applications. The model has a low moment of inertia and a moderate power output. A technician must install and operate the servo motor HG-KR43B to prevent vibrations and achieve optimal performance. Vibrations diminish overall efficiency.

Technical Information of HG-KR43B

A 22-bit encoder is installed in the servo motor HG-KR43B for speed and position detection. There are 4194304 pulses in every rotation of the encoder. The power supply input for the model should be 200 VAC for 3 phase and 230 VAC for a single phase. The motor's housing meets the IP65 protection standard except for the center shaft portion and is suited for natural cooling. IP ratings classify electrical enclosures' dust, debris, and water resistance. The model HG-KR43B permitted an instantaneous speed of 6900 revolutions per minute, generating 43.7 kW/s of power at continuous rated torque.

The model continuously operates with a rated torque of 1.3 Nm and a power of 0.4 kW. The model HG-KR43B can rotate at a maximum of 6000 revolutions per minute and a rated speed of 3000 revolutions per minute. The model HG-KR43B lacks a thermistor and has a thermal class of 130 (B). The servo motor has a moment of inertia of 0.371 x 10-4 kgm2 and weighs 1.4 kilograms.

Electromagnetic Brake Information and Instructions

The HG-KR43B model is equipped with an electromagnetic brake having a power consumption of 7.9 W and a coil resistance of 73 ohms. The brake has a release delay time of 0.03 seconds and a braking delay time of 0.02 seconds. The inductance for the model's electromagnetic brake is 0.18 H, and a brake friction torque of 1.3 Nm. The permissible braking work for the model’s brake is 22 J per braking or 220 J per hour. The brake life of the electromagnetic brake is 20000 braking cycles or 22 J per braking.

When a power outage or an alert goes off during the vertical drive, the electromagnetic brake will keep the shaft in place to prevent it from falling. It is not intended for regular braking (including braking at servo-lock). The electromagnetic brake's period of action varies with the specifics of its power circuit. Remember to double-check the lag time between operations using a working machine.

Ambiance Working Conditions and Installation Instructions

The HG-KR43B model functions optimally in a clean, dust-free environment; thus, it should be kept indoors. The servo motor may only be used when the temperature is between 0 and +40 degrees Celsius, and the relative humidity is between 10% and 80%, provided that condensation does not occur. The motor will only operate effectively if these conditions are met. To ensure optimal motor operation, you must adhere to several stringent criteria.

Even when the servo motor HG-KR43B is positioned at 2,000 meters above sea level, there is no performance deterioration. The servo motor shaft must be placed horizontally, and the lubricant level in the gearbox must be kept below the oil seal lip. If the lubricant level exceeds the lubrication seal lip, lubricant will enter the motor, failing the servo motor HG-KR43B. Due to the high pressure that causes erosion, the lubrication seal has a shorter lifetime.