System Setup
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9.21 Preventive maintenance function
The preventive maintenance function contains the function which provides the information
of diagnosis the duration of life for the speed reducer and the function which informs the
inspection time of the robot. Use these functions for the preventive maintenance for the
robot.
The followings are the features:
• Preventive maintenance function for the speed reducer
• Inspection notice function
• Preventive maintenance function for the hardware
9.21.1 Preventive maintenance function for the speed reducer
Diagnoses the duration of life for the speed reducer by using the both methods of the
lifetime calculation and the torque average value. The diagnosis is executed by operating
the JOB in the play mode. It is unnecessary to prepare the JOB for this diagnosis.
NOTICE
The accuracy of the performance of the life diagnosis is not guaranteed. Use this
function as the one of the methods to determine the duration of life for the speed
reducer.
If the periodic grease replenishment and grease replacement are not performed, or the
excessive pressure is applied to the speed reducer, such as the mechanical
interference etc, it will be failed before reaching to the diagnosis period.
The diagnosis is performed by executing the JOB in the play mode. When operate the
robot in the teach mode (operation by the axis key, FWD operation and test operation),
the life diagnosis function is not performed.
9.21.1.1 Diagnose by the lifetime calculation
• Outline
This function calculates the torque and the speed of the each axis during the JOB
operation, and diagnoses the time to replace the speed reducer by the lifetime
calculation. The replacement time is informed by displaying the message and turning
the replacement signal ON.
Operating the JOB in the PLAY mode performs the diagnosis automatically.
NOTICE
This function is only available for the robot axes. As for the external axes, this function is
not available.
• Set the Replacement Signal
Set the general purpose output signal to notify the replacement time by following
procedures.
1. Change the security mode to the MANAGEMENT mode.
2. Select {PM} in the main menu.
3. Select {PM(REDUCER)}.
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