Servo motor, servo drive is composed of multiple parts, to rely on the normal operation of these parts to play its proper function. Mechanical parts, electronic parts, according to the use of different conditions are some need to maintain. In order for the servo motor and the drive to work for a long period of time, it is necessary to periodically check and replace the parts according to the number of years of durability of these parts. (From JEMA issued “General frequency inverter periodic inspection recommendations”)

Periodic maintenance of the standard interval, because the unit settings environment, the use of the situation and very different.
The following is the maintenance interval for each unit, as a reference for periodic maintenance.

Servo drive (including power supply unit, regeneration unit)

In the parts used in the servo drive, parts that are specifically required for periodic maintenance are aluminum electrolytic capacitors and axial fans.
The number of years of use of aluminum electrolytic capacitors varies greatly depending on the ambient temperature and the motor operating load status.
In general, the use of ambient temperature rise of 10 ℃, then its use of the number of years reduced to about 1/2 of the original.
The criteria for regular maintenance of each series are as follows.

SMARTSTEP
Aluminum electrolytic capacitors … … 50,000 hours
(Using 80% of the ambient temperature 40 ° C, rated run [rated torque])
Axial fan … … 30000 hours
(Using ambient temperature 40 ℃, ambient humidity 65% ​​RH)

W series
Aluminum electrolytic capacitors … … 50,000 hours
(Using 80% of the ambient temperature 40 ° C, rated run [rated torque])
Axial fan … … 30000 hours
(Using ambient temperature 40 ° C, ambient humidity 65% ​​RH) Absolute value Encoder Standby battery … 50000 hours
(Drive using ambient temperature 20 ℃)

U series (30W ~ 750W), U series UE type (100W ~ 750W)
Aluminum electrolytic capacitors … … 50,000 hours
(Using ambient temperature 55 ℃, rated running [rated torque])

U series 1 ~ 5kW
Aluminum electrolytic capacitors … … 50,000 hours
(Using 80% of the ambient temperature 40 ° C, rated run [rated torque])
Axial fan … 30000 hours (using ambient temperature 40 ℃)

H series
Aluminum electrolytic capacitors … … 50,000 hours
(Using ambient temperature 35 ℃, rated running [rated torque])

M series
Aluminum electrolytic capacitors … … 50,000 hours
(Using ambient temperature 35 ℃, rated running [rated torque])
Axial fan … 50000 hours (using ambient temperature 40 ℃)

The installation status is in accordance with the instruction manual.
In order to extend the maintenance interval of the unit, it is recommended to reduce the ambient temperature and minimize the energization time.
If it is not used for a long period of time, or if it is used under conditions that are worse than the above conditions, it is advisable to carry out regular inspections on a five-year basis.
You can discuss with my company, on the basis of the inspection to decide whether to replace the parts.

servo motor
In the servo motor used in the parts, in particular the need for regular maintenance of parts for the bearings, oil seals and brushes. The number of years of use of these components will vary depending on the load applied to the number of revolutions, temperature, and bearing.

The series of regular maintenance standards are as follows.
SMARTSTEP
Bearing … … 20,000 hours

W series
Bearing … … 20,000 hours
Oil seal (only with the oil seal) … … 5000 hours

U series
Bearing … … 20,000 hours
Oil seal (only attached to the oil seal) … … 2000 hours

H series
Bearing … … 30,000 hours
M series
Bearing … … 30,000 hours
Use conditions: the use of ambient temperature 40 ℃; within the allowable load range; rated operation (rated torque, rated speed) when the instructions used in the installation of the state.

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